Patent Publication Number: US-2009230487-A1

Title: Semiconductor device, semiconductor device manufacturing method and lid frame

Description:
TECHNICAL FIELD 
     This invention relates to a semiconductor device that is provided with a semiconductor chip such as a sound pressure sensor chip and a pressure sensor chip, and to a method of manufacturing the same, and to a lid frame that is used with the same. 
     Priority is claimed on Japanese Patent Application Nos. 2005-74901, filed Mar. 16, 2005, 2005-138371, filed May 11, 2005, 2005-197440, filed Jul. 6, 2005, and 2005-247498, filed Aug. 29, 2005, the contents of which are incorporated herein by reference. 
     BACKGROUND ART 
     Conventionally, semiconductor devices such as, for example, pressure sensors and silicon microphones that are manufactured using silicon semiconductors are formed substantially in a rectangular plate shape, and are provided with semiconductor sensor chips in which recessed portions are formed that are recessed from the front surface towards the rear surface thereof. In this type of semiconductor device, this semiconductor sensor chip is packaged on a printed circuit board. A portion of this semiconductor sensor chip whose thickness has been reduced by the recessed portion forms a diaphragm (i.e., a movable electrode), and a displacement or distortion is generated in the diaphragm when pressure such as, for example, sound pressure is applied thereto. For example, a bridge resistive circuit that is formed on the diaphragm treats this displacement or distortion as a change in the electrical resistance, and detects pressure based on these changes in the electrical resistance that correspond to the size of the displacement or distortion (referred to below as distortion). 
     Generally, this type of semiconductor device has the characteristic that the smaller the range in which the displacement of the diaphragm takes place, or the less adhesion of fluid or the like to the diaphragm that occurs, the better the accuracy and reproducibility. Because of this, an amplifier such as an op-amp that amplifies the electrical signals that are output by the micro displacement of the diaphragm is provided in the semiconductor device. This amplifier is packaged on the printed circuit board together with the semiconductor sensor chip. A cover (i.e., a lid) is then used to cover the surface of the printed circuit board so as to package the semiconductor sensor chip and the amplifier within the same space, and protect these from the external environment (see, for example, Patent document 1). 
     In this type of semiconductor device, an aperture portion that connects the aforementioned space with the outside is provided in the cover that houses the semiconductor sensor chip and the amplifier in the same space. Variable pressure such as, for example, sound pressure and the like that is generated externally is guided into the space via this aperture portion, and arrives at the semiconductor sensor chip. In addition, a recessed portion that is recessed from the front surface of the printed circuit board towards the rear surface thereof is provided in a portion of the printed circuit board that is located directly below the diaphragm. As a result of a space being formed directly below the diaphragm by this recessed portion, the diaphragm vibrates (i.e., is displaced) correctly at a displacement amount that corresponds to the incoming pressure. 
     Moreover, in this type of semiconductor device, the fact that the semiconductor chip is connected to an external space via through holes that are formed in the circuit board and sealing resin package is disclosed, for example, in Patent document 2. The through holes that are formed in the sealing resin package are constructed, for example, by cylindrical pipes that are linked to the through holes in the circuit board. 
     The sealing resin package of this type of semiconductor device is formed by placing a circuit board on which the semiconductor chip and pipes have been mounted into a metal mold which has a cavity to allow these to be formed, and then supplying a flow of molten resin to this cavity. 
     Accordingly, it is necessary to prevent any shift in the position of the pipes relative to the circuit board that is caused by the flow of the molten resin which forms the sealing resin package, and also to prevent the molten resin flowing into the gaps between the pipes and the circuit board. Because of this, conventionally, the pipes are fixed in advance to the circuit board prior to the formation of the sealing resin package. The pipes are fixed using a method such as, for example, riveting the pipes to the through holes in the circuit board, welding them thereto, soldering them, or adhering them using an adhesive agent. 
     Furthermore, conventionally, some semiconductor devices have been provided with semiconductor chips having movable portions such as acceleration sensor chips and the like. In this type of semiconductor device, an empty space portion space is provided between the circuit board on which the semiconductor chip has been fixed and the resin body (i.e., the resin mold portion), and the semiconductor chip is placed within this space portion (see, for example, Patent document 3). The space portion is formed by placing a lid that covers the semiconductor chip on the front surface of the circuit board. 
     The resin body of this type of semiconductor device is formed by placing a circuit board on which the semiconductor chip and lid have been mounted into a mold which has a cavity to allow these to be formed, and then supplying a flow of molten resin to this cavity. In the formation of this resin body, it is necessary to prevent any shift in the position of the lid relative to the circuit board that is caused by the flow of the molten resin which forms the resin body, and also to prevent the molten resin flowing into the space portion. Therefore, conventionally, a step to adhere the lid to the surface of the circuit board, or a step to form recessed portions or support portions that are used to support end portions of the lid on the circuit board are performed prior to the formation of the resin body.
         [Patent document 1] Published Japanese Translation (JP-A) No. 2004-537182 of the PCT International Publication (WO2002/045463)   [Patent document 2] Japanese Unexamined Patent Application, First Publication (JP-A) No. H09-119875   [Patent document 3] Japanese Unexamined Patent Application, First Publication (JP-A) No. H08-64709       

     However, in the conventional semiconductor device described in Patent document 1, it has been necessary to alter the size of the recessed portions that are formed on the circuit board in accordance with the characteristics of the semiconductor chip. Because of this, the problem arises that manufacturing the circuit board becomes somewhat complex, which leads to a reduction in the manufacturing efficiency of a semiconductor device. In addition, there is an increase in the cost of manufacturing a semiconductor device. 
     Furthermore, at the same time as it covers them, the cover forms a space above the semiconductor sensor chip and amplifier on the surface of the printed circuit board where the semiconductor sensor chip and amplifier have both been installed. When this cover is placed in position, the problem has arisen that it sometimes comes into contact with the semiconductor sensor chip and amplifier or with the wires electrically connecting them and thus causing damage. Moreover, because distal end portions of the cover are fixed to the printed circuit using only, for example, an adhesive agent, if, for example, a shock or the like is applied thereto, the cover sometimes comes off, so that the problem and has arisen that there is a decrease in the durability of the semiconductor device which has led to a consequent reduction in the reliability of the semiconductor device. 
     Furthermore, during the manufacturing of the semiconductor device described in Patent document 2 which has a resin package, it has been necessary to perform the step of forming through holes in the circuit board and to perform the step of fixing pipes to the circuit board. Because of this, the problem has arisen that there has been an increase in the cost of manufacturing a semiconductor device, and a reduction in the efficiency of manufacturing a semiconductor device. 
     Furthermore, during the manufacturing of the semiconductor device described in Patent document 3, because it has been necessary to perform the step of adhering a lid to the circuit board and to perform the step of forming the recessed portions or support portions in the circuit board, the problem has arisen that there has been an increase in the cost of manufacturing a semiconductor device. 
     DISCLOSURE OF THE INVENTION 
     The present invention was conceived in view of the above described circumstances, and it is an object thereof to provide a semiconductor device that makes it possible to achieve a reduction in manufacturing costs, an improvement in manufacturing efficiency, and an improvement in durability, and to also provide a method of manufacturing the semiconductor device as well as to a lid frame used with the semiconductor device. 
     The semiconductor device of the present invention includes: a substrate; a semiconductor chip that is fixed to a first surface of the substrate chip covering lid body that is provided on the first surface of the substrate so as to cover the semiconductor chip and that forms a hollow first space portion that surrounds the semiconductor chip, and in which there is provided a substantially cylindrical aperture portion that extends to the outer side of the first space portion and has an aperture end at a distal end thereof and that is connected to the first space portion; and a first resin mold portion that forms the first space portion via the chip covering lid body and covers the substrate such that the aperture end is exposed, and that fixes the substrate integrally with the chip covering lid body. 
     In the semiconductor device of the present invention, it is also possible for the substrate to be a circuit board and for the semiconductor chip to be electrically connected to the circuit board. 
     In the semiconductor device of the present invention, it is also possible for the substrate to be a stage portion that is separated from a lead frame, and for the semiconductor device to have electrical connection leads that are placed around a periphery of the stage portion and that are fixed by the first resin mold portion such that one end of each electrical connection lead is exposed from the first resin mold portion, and for the semiconductor chip to be electrically connected to the electrical connection leads inside the first space portion. 
     In the semiconductor device of the present invention, it is also possible for the semiconductor device to have: a chip through hole that is formed in a position on the stage portion where the semiconductor chip is mounted, and that penetrates in the thickness direction of the stage portion from the first surface to the second surface which is on the opposite side from the first surface; and a second resin mold portion that is formed on the second surface of the stage portion, and is integrally fixed to the second surface of the stage portion so as to form a second space portion that is connected to the chip through hole. 
     In the semiconductor device of the present invention, it is also possible for the second space portion to be formed by a stage covering lid body that covers the second surface of the stage portion. 
     In the semiconductor device of the present invention, it is also possible for a diaphragm to be formed in the semiconductor chip and for the chip through hole to be formed facing the diaphragm, and for a connecting lead that is displaced towards the second surface side to be connected to the stage portion, and for the second resin mold portion to be fixed to the second surface of the stage portion so as to envelop the electrical connection leads and the connecting lead. 
     In addition, the semiconductor device of the present invention includes: a stage portion having a first and a second surface; a chip through hole that is formed in the stage portion and penetrates the first and second surfaces in the thickness direction thereof; a semiconductor chip that is fixed to the first surface of the stage portion which is also a portion where the chip through hole is formed; a chip covering lid body that is provided on the first surface of the stage portion so as to cover the semiconductor chip and that forms a hollow first space portion that surrounds the semiconductor chip; and a resin mold portion that covers the first surface of the stage portion so as to form the first space portion via the chip covering lid body, and that also covers the second surface of the stage portion so as to form a second space portion that is connected to the chip through hole at the second surface of the stage portion and form an aperture portion that connects the second space portion to the outside, and that fixes the stage portion integrally with the chip covering lid body. 
     In the semiconductor device of the present invention, it is also possible for a diaphragm to be formed in the semiconductor chip for the chip through hole to be formed facing the diaphragm, and for a connecting lead that is displaced towards the second surface side of the stage portion to be connected to the stage portion, and for the electrical connection leads to be placed in the vicinity of the stage portion, and for the resin mold portion to have a first resin layer that covers the first surface of the stage portion so as to form the first space portion via the chip covering lid body, and have a second resin layer that forms the second space portion and the aperture portion on the second surface of the stage portion and that covers the second surface of the stage portion so as to envelop the electrical connection leads and the connecting lead. 
     Furthermore, the semiconductor device of the present invention includes: a circuit board; a semiconductor chip that placed on top of and fixed to one surface side in the thickness direction of the circuit board and is also electrically connected thereto; a lid frame that is placed on top of the one surface side of the circuit board and that also covers the semiconductor chip; and a resin mold portion that is placed so as to provide a hollow space portion between itself and the semiconductor chip via the lid body frame, and that fixes the circuit board integrally with the lid frame, wherein a lid body that is provided on the circuit board and forms the space portion, and protruding portions that extend from the lid body in the thickness direction so as to protrude towards the outer side from a top surface of the space portion, and whose distal end portions are exposed to the outside of the resin mold portion are formed in the lid frame. 
     In the semiconductor device according to this invention, an aperture end of an aperture portion is exposed to the outside from a resin mold portion in order that the aperture end of the aperture portion can be placed in contact with the mold when the resin mold portion is being formed using a mold. Namely, when this semiconductor device is being manufactured, a circuit board and a lid frame are sandwiched in the thickness direction of the circuit board by a pair of molds that are used to form the resin mold portion. Here, because an aperture portion of the substantially cylinder-shaped lid frame extends from a top end portion of the lid body in a direction in which it moves further away from the circuit board, one mold is in contact with the aperture end of the aperture portion and a gap is formed between the other mold and the top end portion of the lid body. 
     Moreover, because it is sandwiched by the pair of molds, the aperture portion is pressed towards the circuit board. Because a bottom end portion of the lid body that is in contact with the circuit board is pressed against the circuit board by the pressing of the aperture portion, the gap between the bottom end portion of the lid body and the circuit board can be closed. Furthermore, because the aperture end of the aperture portion also abuts against one mold, the aperture end of the aperture portion can be closed by the one mold. As a result of the above, a space portion is sealed off from the outside. 
     After the sandwiching by this pair of molds, molten resin is poured into a resin forming space whose boundaries are formed by the one mold, the lid body, the aperture portion, and the circuit board. As a result, a resin mold portion is formed in which a distal end portion of the aperture portion is exposed to the outside. At this time, because the gap between the bottom end portion of the lid body and the circuit board and the gap between the one mold and the aperture end of the aperture portion are closed by the pressing of the aperture portion by the one mold, molten resin that is poured into the resin forming space can be prevented from flowing into the space portion. 
     Moreover, as a result of the lid frame being pressed against the circuit board by the pair of molds, the relative position positions of the lid frame and the circuit board can be fixed. Accordingly, when forming the resin mold portion it is possible to prevent the lid frame being moved relative to the circuit board by the molten resin flowing into the resin forming space. 
     Moreover, according to the above described semiconductor device, when the semiconductor chip is a sound pressure sensor chip or a pressure sensor chip that is provided with a diaphragm, when pressure variations such as noise and the like reach the diaphragm from the outside via the aperture portion and the chip through hole in the stage portion, the diaphragm of the semiconductor chip vibrates based on these pressure variations, thereby enabling the pressure variations to be detected. 
     The volume of the chip covering lid body or of the first or second space portions whose boundaries are formed by the chip covering lid body can be easily altered in accordance only with the shape or size of the lid body without the design of the stage portion being altered. Accordingly, it is possible to secure a sufficient volume for the first or second space portions, and it is possible to keep to a minimum any changes in the pressure of the first or second space portions that are caused by the vibrating of the diaphragm. Because of this, the diaphragm of the semiconductor chip can be made to vibrate correctly by a deformation amount that is proportionate to the pressure vibrations of the noise or the like from the outside without being affected by changes in the pressure of the first or second space portions. 
     Moreover, in the embodiment in which the stage portion is supported in an elevated state by the connection leads, the layer thickness of the second resin layer can be increased. When this second resin layer is being formed, the protruding portion of the mold can be extended to below the stage portion so that the second space portion can be formed having a large volume. Accordingly, it is possible to keep to a minimum any changes in the pressure of the chip through hole and the second space portion that occur in conjunction with the vibrating of the diaphragm, and it is possible to prevent the deformation of the diaphragm being obstructed. As a result, the diaphragm can be made to vibrate correctly by a deformation amount that corresponds to the applied pressure so that pressure detected by this semiconductor device is accurate. 
     Furthermore, in a semiconductor device in which a protruding portion is formed in the lid body, a distal end portion of the protruding portion is exposed to the outside from the resin mold portion in order that the distal end portion of the protruding portion can be placed in contact with the mold when the resin mold portion is being formed using a mold. Namely, when this semiconductor device is being manufactured, a circuit board and a lid frame are sandwiched in the thickness direction of the circuit board by a pair of molds that are used to form the resin mold portion. Here, because the protruding portion of the lid frame extends from a top end portion of the lid body in a direction in which it moves further away from the circuit board, one mold is in contact with the distal end portion of the protruding portion and a gap is formed between the other mold and the top end portion of the lid body. 
     Because it is sandwiched by the pair of molds, the protruding portion is pressed towards the circuit board. Because a bottom end portion of the lid body that is in contact with the circuit board is pressed against the circuit board by the pressing of the protruding portion, the gap between the bottom end portion of the lid body and the circuit board can be closed. Namely, the space portion is sealed off from the outside. 
     After the sandwiching by this pair of molds, molten resin is poured into a resin forming space whose boundaries are formed by the one mold, the lid body, and the circuit board. As a result, a resin mold portion is formed in which the distal end portion of the protruding portion is exposed to the outside. At this time, because the gap between the bottom end portion of the lid body and the circuit board is closed by the pressing force of the protruding portion, molten resin that is poured into the resin forming space can be prevented from flowing into the space portion. 
     Moreover, as a result of the lid frame being pressed against the circuit board by the pair of molds, the relative position positions of the lid frame and the circuit board can be fixed. Accordingly, when forming the resin mold portion it is possible to prevent the lid frame being moved relative to the circuit board by the molten resin flowing into the resin forming space. 
     As a result, according to the present invention, it is no longer necessary to perform a step to fix the lid frame which covers the semiconductor chip to the circuit board, or to perform a step of forming through holes in the circuit board. As a result, it is possible to reduce costs when manufacturing a semiconductor device in which a semiconductor chip that is placed in the space portion is connected to an external space, and it is possible to achieve an improvement in the manufacturing efficiency. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side cross-sectional view showing a semiconductor device according to a first embodiment of the present invention. 
         FIG. 2  is a cross-sectional view showing an example of a semiconductor chip that is used in the semiconductor device according to the first example of the present invention shown in  FIG. 1 . 
         FIG. 3  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 1 . 
         FIG. 4  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 1 . 
         FIG. 5  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 1 . 
         FIG. 6  is a side cross-sectional view showing a semiconductor device according to a second embodiment of the present invention. 
         FIG. 7  is a cross-sectional view showing an example of a method of transporting a semiconductor device according to an embodiment of the present invention. 
         FIG. 8  is a plan cross-sectional view showing a semiconductor device according to a third embodiment of the present invention as seen from a surface of a stage portion. 
         FIG. 9  is a plan cross-sectional view showing a semiconductor device according to the third embodiment of the present invention as seen from another surface of a stage portion. 
         FIG. 10  is a side cross-sectional view showing a semiconductor device according to the third embodiment of the present invention. 
         FIG. 11  is a plan view showing a lead frame that is used in the manufacturing of the semiconductor device according to the third embodiment of the present invention shown in  FIG. 10 . 
         FIG. 12  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 10 . 
         FIG. 13  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 10 . 
         FIG. 14  is a side cross-sectional view showing a variant example of a through electrode in the semiconductor device according to the third embodiment of the present invention. 
         FIG. 15  is a side cross-sectional view showing a first variant example of the semiconductor device according to the third embodiment of the present invention. 
         FIG. 16  is a side cross-sectional view showing a second variant example of the semiconductor device according to the third embodiment of the present invention. 
         FIG. 17  is a side cross-sectional view showing a third variant example of the semiconductor device according to the third embodiment of the present invention. 
         FIG. 18  is a plan cross-sectional view showing a semiconductor device according to a fourth embodiment of the present invention as seen from a surface of a stage portion. 
         FIG. 19  is a plan cross-sectional view showing a semiconductor device according to the fourth embodiment of the present invention as seen from another surface of a stage portion. 
         FIG. 20  is a side cross-sectional view showing a semiconductor device according to the fourth embodiment of the present invention. 
         FIG. 21  is a side cross-sectional view showing a semiconductor device according to a fifth embodiment of the present invention. 
         FIG. 22  is a side cross-sectional view showing a semiconductor device according to a sixth embodiment of the present invention. 
         FIG. 23  is a side cross-sectional view showing the semiconductor device according to the sixth embodiment of the present invention shown in  FIG. 23 . 
         FIG. 24  is a plan view showing a lead frame that is used in the manufacturing of the semiconductor device according to the sixth embodiment of the present invention shown in  FIG. 23 . 
         FIG. 25  is a cross-sectional view showing the lead frame shown in  FIG. 24 . 
         FIG. 26  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 23 . 
         FIG. 27  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 23 . 
         FIG. 28  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 23 . 
         FIG. 29  is a cross-sectional view showing a variant example of the semiconductor device according to the sixth embodiment of the present invention. 
         FIG. 30  is a cross-sectional view showing a method of manufacturing the variant example of the semiconductor device according to the sixth embodiment of the present invention. 
         FIG. 31  is a side cross-sectional view showing a semiconductor device according to a seventh embodiment of the present invention. 
         FIG. 32  is a cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 31 . 
         FIG. 33  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 31 . 
         FIG. 34  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 31 . 
         FIG. 35  is a side cross-sectional view showing a semiconductor device according to an eighth embodiment of the present invention. 
         FIG. 36  is a cross sectional view showing an example of a semiconductor chip that is used in the semiconductor device according to the eighth embodiment of the present invention shown in  FIG. 35 . 
         FIG. 37  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 35 . 
         FIG. 38  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 35 . 
         FIG. 39  is a side cross-sectional view showing a method of manufacturing the semiconductor device shown in  FIG. 35 . 
         FIG. 40  is a side cross-sectional view showing a state in which the semiconductor device shown in  FIG. 35  is mounted on a package board. 
         FIG. 41  is a side cross-sectional view showing a semiconductor device according to a ninth embodiment of the present invention. 
     
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     A first embodiment of the present invention is shown in  FIG. 1  through  FIG. 5 . As is shown in  FIG. 1 , this semiconductor device  1  is provided with a circuit board  3 , a semiconductor chip  5  that is superimposed on one end side in the thickness direction of the circuit board  3 , a lid frame  7 , and a resin mold portion  9 . 
     The semiconductor chip  5  is formed substantially in a plate shape, and a rear surface  5   a  thereof is adhesively fixed to a front surface  3   a  that is positioned on the one end side of the circuit board  3 . This semiconductor chip  5  is, for example, a sound pressure sensor chip. 
     Namely, as is shown in  FIG. 2 , this semiconductor chip  5  is constructed by stacking a multilayer printed circuit board  11  on a surface  10   a  of a silicon substrate  10 , and then providing a condenser unit  12  in through holes  10   b  and  11   b  that penetrate in the thickness direction the silicon substrate  10  and the multilayer printed circuit board  11 . The condenser unit  12  is formed by an oscillating electrode plate  13  that protrudes from an inner surface of the through holes  10   b  and  11   b  and a fixed electrode plate  14 . The fixed electrode plate  14  is placed so as to overlap in the thickness direction via a minute gap with the oscillating electrode plate  13 . The oscillating electrode plate  13  and the fixed electrode plate  14  are placed between the silicon substrate  10  in the multilayer printed circuit board  11 . 
     In this condenser unit  12 , when the oscillating electrode plate  13  oscillates based on sounds and changes in pressure that enter into the through hole  11   b  from a surface  5   b  side of the multilayer printed circuit board  11 , changes in the gap between the oscillating electrode plate  13  and the fixed electrode plate  14  that are based on this vibration are output as changes in the electrostatic capacity between the oscillating electrode plate  13  and the fixed electrode plate  14 . 
     Moreover, a plurality of pad electrodes  15  are formed so as to be exposed on the surface  5   b  of the multilayer printed circuit board  11 . These pad electrodes  15  have a role of supplying power to the semiconductor chip  5 , and also function as terminals to transmit to the outside output signals that are obtained from the condenser unit  12 . 
     As is shown in  FIG. 1 , the lid frame  7  is formed from a heat resistant thermosetting resin, and is provided with a lid body  17  that is placed on the front surface  3   a  of the circuit board  3  so as to cover the semiconductor chip  5 , and a substantially cylindrical aperture portion  19  that protrudes from the lid body  17  while being formed integrally therewith. 
     The lid body  17  is provided with substantially plate-shaped top walls (i.e., top end portion)  21  that are placed in a position where they are separated in the thickness direction from the front surface  3   a  of the circuit board  3 , and side walls  23  that protrude from peripheral edges of the top walls  21  towards the front surface  3   a  of the circuit board  3 . Namely, the lid body  17  is formed by the top walls  21  and the side walls  23  substantially in a hollowed-out shape that opens onto a distal end portion  23   a  side of the side walls  23 . In a state in which the distal end portion  23   a  of the side walls  23  is placed on the front surface  3   a  of the circuit board  3  that is positioned on the peripheral edges on the semiconductor chip  5 , a hollow space portion  25  is created by the front surface  3   a  of the circuit board  3  and by inner surfaces  21   a  and  23   b  of the top walls  21  and side walls  23 . Note that in this state, of the lid body  17 , the top walls  21  are positioned the furthest away from the front surface  3   a  of the circuit board  3 , and the inner surfaces  21   a  and  23   b  of the top walls  21  and side walls  23  are positioned such that they do not come into contact with the semiconductor chip  5 . 
     The substantially cylindrical aperture portion  19  protrudes from a center portion of the top walls  21 , in a direction in which it moves beyond the top walls  21  further away from the front surface  3   a  of the circuit board  3 . This aperture portion  19  has the role of enabling the space portion  25  to open onto the outside of the resin mold portion  9 , and the surface  5   b  of the semiconductor chip  5  is exposed to the outside via an insertion hole  19   a  of this aperture portion  19 . 
     Moreover, the aperture portion  19  extends vertically upright relative to the front surface  3   a  of the circuit board  3  and the top surfaces  21   b  of the top walls  21 , and can be elastically deformed relative to the lid body  17 . Namely, as a result of deformation portions  26  that are formed in portions connecting the top walls  21  of the lid body  17  to the aperture portion  19  being elastically deformed, the aperture portion  19  is able to be moved elastically in a direction that is orthogonal to the front surface  3   a  of the circuit board  3 . 
     Moreover, a thin film-shaped shield portion  27  that is formed on the inner surfaces  21   a  and  23   b  of the top walls  21  and side walls  23  facing the space portion  25  is provided on this lid frame  7 . This shield portion  27  is formed by coating or blowing a conductive paste which has electroconductivity such as copper or silver or the like over the inner surfaces  21   a  and  23   b  of the top walls  21  and side walls  23  and also over inner surfaces of the insertion hole  19   a  of the aperture portion  19 . Namely, electroconductivity is imparted to the lid body  17  and the aperture portion  19  by this shield portion  27 . The shield portion  27  is formed so as to extend as far as distal end portions  23   a  of the side walls  23  of the lid body  17 . When the lid frame  7  has been placed in position, the shield portion  27  is in contact with the front surface  3   a  of the circuit board  3 , and the space portion  25  is covered by this shield portion  27 . 
     In addition, a pair of joining portions  29  that extend integrally from peripheral edges of the top walls  21  in the longitudinal direction of the top walls  21  are formed in the lid frame  7 . 
     On the circuit board  3  there are provided a plurality of pad electrodes  31  that are formed in a substantially plate shape and are placed on the front surface  3   a , a plurality of solder balls (i.e., electrode portions)  33  that are placed on the rear surface  3   b  that is located on the other end side in the thickness direction of the circuit board  3 , and wiring portions  35  that are placed inside the circuit board  3  and that electrically connect each of the plurality of pad electrodes  31  and solder balls  33 . These wiring portions  35  are formed, for example, from copper foil. 
     The pad electrodes  31  are electrically connected by wires  37  to the pad electrodes  15  of the semiconductor chip  5 . The pad electrodes  31  are positioned around the periphery of the area where the semiconductor chip  5  is placed and are exposed to the space portion  25 . These pad electrodes  31  are formed, for example, by plating copper foil with nickel (Ni) having a thickness of 3 to 5 μm and gold (Au) having a thickness of 0.5 μm. 
     The solder balls  33  are formed substantially in a spherical shape, and protrude from the rear surface  3   b  of the circuit board  3 . 
     A shield component  39  that has conductivity and takes the form of a thin film is provided on the front surface  3   a  of the circuit board  3 . This shield component  39  is formed on the front surface  3   a  of the circuit board  3  in the areas facing the space portion  25 , the area where the semiconductor chip  5  is placed, and the areas where the distal end portions  23   a  of the side walls  23  of the lid body  17  are placed. Namely, in a state in which the lid frame  7  has been placed on the front surface  3   a  of the circuit board  3 , this shield component  39  is in contact with the shield portion  27  of the lid frame  7 . Accordingly, the shield component  39  is constructed so as to enclose the space portion  25  including the semiconductor chip  5  as well as the shield portion  27  of the lid frame  7 . 
     Note that as a result of the above, the above described semiconductor chip  5  is fixed to the front surface  3   a  of the circuit board  3  via this shielding component  39 , and the distal end portion  23   a  of the side walls  23  of the lid frame  7  is also placed on the front surface  3   a  of the circuit board  3  via this shield component  39 . However, holes  39   a  are formed in this shield component  39  avoiding the respective pad electrodes  31  in order that the pad electrodes  31  of the circuit board  3  are exposed to the space portion  25 , so that the shield component  39  and the pad electrodes  31  are electrically insulated from each other. 
     The resin mold portion  9  is in contact with the front surface  3   a  of the circuit board  3  and also with outer surfaces  21   b  and  23   c  of the lid body  17  that are located on the opposite side from the inner surfaces  21   a  and  23   b . In addition, the resin mold portion  9  surrounds the joining portions  29  and the aperture portion  19  of the lid frame  7 , and fixes the circuit board  3  and the lid frame  7  in a single unit. 
     Note that an aperture end  19   b  of the aperture portion  19  that protrudes from the lid body  17  and distal end portions  29   a  of the joining portions  29  are exposed to the outside respectively at a surface  9   a  of the resin mold portion  9  that faces in the same direction as the front surface  3   a  of the circuit board  3 , and at side surfaces  9   b  that are adjacent to the surface  9   a.    
     Namely, the resin mold portion  9  is constructed so as to cover the semiconductor chip  5  via the hollow space portion  25  that is formed by the lid body  17 . Note that in  FIG. 1 , the resin mold portion  9  is depicted as being separated by the aperture portion  19  and the joining portions  29 , however, in actual fact, the aperture portion  19  and the joining portions  29  are surrounded by a single resin mold portion  9 , and the resin mold portion  9  is formed as a single unit. 
     Next, a method of manufacturing the semiconductor device  1  that has the above described structure above will be described. 
     Note that in this manufacturing method, a single circuit board  3  that is made up of a plurality of units that are composed of a plurality of pad electrodes  31 , wiring portions  35 , and a shielding component  39  is prepared in advance in order to construct the semiconductor device  1 . 
     In addition, the semiconductor chips  5  are each adhered to the front surface  3   a  of the circuit board  3  via the respective shield components  39 . This adhering of the semiconductor chips  5  is performed by placing the semiconductor chips  5  on the front surface  3   a  of the circuit board  3  via a silver paste, and then curing this silver paste. After this adhering has ended, plasma cleaning is performed in order to remove any contamination adhering to the surfaces  3   a  and  5   b  of the circuit board  3  and semiconductor chips  5 , and particularly to the pad electrodes  15  and  31 . After this, the wires  37  are placed in position by wire bonding and the pad electrodes  15  and  31  of the semiconductor chips  5  and the circuit board  3  are mutually electrically connected. 
     Thereafter, as is shown in  FIG. 3 , a plurality of lid frames  7  that are integrally joined by the joining portions  29  are prepared (frame preparation step). In this frame preparation step, a plurality of lid frames  7  that are joined together are formed by an injection molding method using heat resistant thermosetting resin. 
     Next, the plurality of lid frames  7  are stacked on the front surface  3   a  of the circuit board  3  so that the respective semiconductor chips  5  are covered by the respective lid bodies  17  (frame placement step). Here, because the respective joining portions  29  are set such that the respective lid frames  7  are placed in predetermined positions covering the respective semiconductor chips  5 , the positioning of the respective lid frames  7  relative to the plurality of semiconductor chips  5  can be performed easily. 
     A mold E having a flat surface E 1  is then placed on the rear surface  3   b  side of the circuit board  3 , and a mold (i.e., one mold) F having a recessed portion F 2  that has been hollowed out from a surface F 1  is placed opposite this on the front surface  3   a  side of the circuit board  3 . Namely, the pair of molds E and F are constructed so as to sandwich the circuit board  3  in the thickness direction thereof. 
     At the same time as this pair of molds E and F is placed in position, a sheet S in the shape of a thin film that is able to be peeled off easily from the mold F and from the resin which forms the resin mold portion is placed between the circuit board  3  and lid frame  7  and the mold F (sheet placement step). This sheet S is elastically deformable and is formed, for example, from fluorine resin. 
     Thereafter, the mold F is moved in a direction towards the mold E and, as is shown in  FIG. 4 , the circuit board  3  is sandwiched between the flat surface E 1  and the surface F 1  of the pair of molds E and F, and the aperture portion  19  is pressed towards the circuit board  3  such that the aperture end  19   b  of the aperture portion  19  is blocked by a bottom surface F 3  of the recessed portion F 2  of the mold F (pressing step). Prior to this pressing step, the sheet S is stuck using a vacuum (i.e., the arrows a) to the bottom surface F 3  of the mold F. 
     Accordingly, in a state in which this pressing step has been performed, the rear surface  3   b  of the circuit board  3  is in contact with the flat surface E 1  of the mold E, and the front surface  3   a  of the circuit board  3  is in contact via the sheet S with the surface F 1  of the mold F. Moreover, the aperture end  19   b  of the aperture portion  19  of the lid frame  7  abuts against the bottom surface F 3  of the mold F. During this abutment, because the aperture end  19   b  of the aperture portion  19  is pressing against the sheet S, the sheet S is elastically deformed. Furthermore, because the aperture portion  19  extends from the lid body  17  in a direction in which it moves further away from the circuit board  3 , a gap is formed between the mold F and the lid body  17 . 
     In this pressing step, because the distal end portion  23   a  of the lid body  17  that is in contact with the circuit board  3  via the aperture portion  19  are pressing against the circuit board  3 , the gap between the distal end portion  23   a  of the lid body  17  and the circuit board  3  can be sealed off. 
     Moreover, in this pressing step, the aperture portion  19  is elastically deformed relative to the lid body  17 . Namely, because the distal end portion  23   a  of the lid body  17  is pressed by a moderate force onto the circuit board  3  due to the elastic force of the aperture portion  19 , the gap between the distal end portion  23   a  of the lid body  17  and the circuit board  3  can be reliably sealed off. 
     Furthermore, because the aperture end  19   b  of the aperture portion  19  is also pressed by a moderate force onto the mold F due to the elastic force of the aperture portion  19 , and because the sheet S that is placed between the bottom surface F 3  of the mold F and the aperture end  19   b  of the aperture portion  19  is elastically deformed, the gap between the aperture end  19   b  of the aperture portion  19  and the bottom surface F 3  of the mold F can also be reliably closed. As a result of the above, the space portion  25  is tightly sealed off from the outside. 
     Moreover, during this pressing step, because the lid frame  7  is pressed by the pair of molds E and F onto the circuit board  3 , the relative positions of the lid frame  7  and the circuit board  3  are fixed. 
     Furthermore, in this pressing step, the aperture portion  19  is elastically deformed relative to the lid body  17 . Namely, the force with which the lid body  17  is pressed onto the circuit board  3  by the mold F can be absorbed by the elastic deformation of the aperture portion  19 . Because of this, as a result of the elastic deformation of the aperture portion  19 , it is possible to prevent the force with which the lid frame  7  is pressed against the circuit board  3  by the mold F being excessively transmitted to the lid body  17 , and it is possible to prevent the lid body  17  becoming deformed. 
     Note that, if the abutment of the aperture end  19   b  of the aperture portion  19  against the sheet S in the pressing step is considered, it is preferable that the shape of the aperture end  19   b  of the aperture portion  19  is a rounded shape. Namely, by constructing the aperture end  19   b  of the aperture portion  19  in the manner described above, it is possible to prevent the aperture end  19   b  of the aperture portion  19  biting into the sheet S and notches being consequently generated in the sheet S, and to thereby prevent damage to the sheet S that is due to these notches. The rounded shape of the aperture end  19   b  may be created, for example, in the frame preparation step. 
     Thereafter, in a state in which the aperture portion  19  is pressed by the bottom surface F 3  of the mold F, a thermosetting resin such as an epoxy resin is poured in a molten state into a single gap that is formed by the recessed portion F 2  of the mold F, the circuit board  3 , the plurality of lid bodies  17 , and the aperture portion  19  so as to form a resin mold portion  9  in which the circuit board  3  and the plurality of lid frames  7  are fixed in a single unit (molding step). Note that the aforementioned gap refers to a resin forming space that is used to form the resin mold portion  9 . Moreover, this resin mold portion  9  is formed by a transfer molding method in which molten resin is poured sequentially from an end portion of a single large resin forming space. 
     In this molding step, because the gap between the distal end portion  23   a  of the lid body  17  and the circuit board  3  is sealed off by the pressing force of the aperture portion  19 , and because the gap between the mold F and the aperture end  19   b  of the aperture portion  19  is sealed off by the pressing force of the aperture portion  19  and the elastic pressure of the sheet S, it is possible to prevent the molten resin that is poured into the resin forming space entering into the space portion  25 . Moreover, in this molding step, because the relative positions of the lid frame  7  and the circuit board  3  are already fixed, it is possible to prevent the lid frame  7  being moved relative to the circuit board  3  by the molten resin that is poured into the resin forming space. 
     Note that, in this molding step, after the resin forming space has been filled by the molten resin, the resin mold portion  9  is formed by then hardening the resin using heat, as is shown in  FIG. 5 . 
     After this molding step, a sheet-shaped dicing tape (i.e., a screening seal) D is adhered onto the entire surface  9   a  of the resin mold portion  9  so that the aperture end  19   b  of the aperture portion  19  is sealed off by this dicing tape D (seal adhesion step). Thereafter, a dicing step is performed in which a blade B is used to cut up the individual semiconductor devices  1 . At this time, the resin mold portion  9 , the circuit board  3 , and the joining portions  29  are cut, however, the dicing tape D is not cut. The cutting of this dicing tape D is performed after the completion of the dicing step. 
     Finally, the manufacturing of the semiconductor device  1  is ended when the solder balls  33  (see  FIG. 1 ) are mounted on the wiring portions  35  that are exposed on the rear surfaced  3   b  of the circuit board  3 . Note that the dicing tape D remains adhered until the mounting of the semiconductor device  1  on a package board of an electronic device such as a mobile telephone or personal computer is completed. 
     When the semiconductor device  1  is mounted on a package board, the rear surface  3   b  of the circuit board  3  is positioned facing the surface of the package board, and the solder balls  33  are placed on land portions that are formed on the surface of the package board. By then pressing the semiconductor device  1  against the surface of the package board while applying heat to the solder balls  33 , the solder balls  33  are fixed to the land portions and are also electrically connected thereto. 
     According to the above described semiconductor device  1 , the method of manufacturing the semiconductor device  1 , and the lid frame  7  that is used therein, simply by sandwiching the circuit board  3  and the lid frame  7  between the pair of molds E and F, it is possible to prevent molten resin flowing into the space portion  25  when the resin mold portion  9  is being formed, and it is possible to prevent the lid frame  7  moving relative to the circuit board  3 . Accordingly, it is no longer necessary to perform a step to fix the lid frame  7  which covers the semiconductor chip  5  to the circuit board  3 , or to perform a step of forming through holes in the circuit board  3 . As a result, it is possible to reduce costs when manufacturing a semiconductor device  1  in which a semiconductor chip  5  that is placed in the space portion  25  is connected to an external space, and it is possible to achieve an improvement in the manufacturing efficiency. 
     Moreover, because the shield portion  27  of the conductive lid frame  7  and the shielding component  39  of the circuit board  3  surround the semiconductor chip  5 , even if electrical noise that is generated on the exterior side of the semiconductor device  1  intrudes into the circuit board  3  and resin mold portion  9 , in the lid frame  7  and the shielding component  39  the noise is prevented from intruding into the space portion  25  and the insertion hole  19   a . Accordingly, this noise is reliably prevented from reaching the semiconductor chip  5 , and any erroneous operation of the semiconductor chip  5  that is caused by such noise can be reliably prevented. 
     Furthermore, because the force with which the lid frame  7  is pressed in the pressing step against the circuit board  3  by the mold F which has the recessed portion F 2  is prevented from being transmitted in excess to the lid body  17  by the elastic deformation of the aperture portion  19  so that the lid body  17  is prevented from becoming deformed, it is possible to prevent any irregularity in the space portion  25  that is caused by deformation of the lid body  17 . 
     Moreover, because the distal end portion  23   a  of the lid body  17  is pressed by a moderate force onto the circuit board  3  due to the elastic force of the aperture portion  19 , the gap between the distal end portion  23   a  of the lid body  17  and the circuit board  3  can be reliably sealed off. Furthermore, because the aperture end  19   b  of the aperture portion  19  is also pressed by a moderate force onto the mold F due to the elastic force of the aperture portion  19 , and because the sheet S that is placed between the bottom surface F 3  of the mold F and the aperture end  19   b  of the aperture portion  19  is elastically deformed, the gap between the aperture end  19   b  of the aperture portion  19  and the bottom surface F 3  of the mold F can also be reliably sealed. 
     Furthermore, because the semiconductor device  1  has what is known as a surface package type of structure in which the solder balls  33  are only placed on the rear surface  3   b  side of the circuit board  3  which faces the package board, the package area of the semiconductor device  1  on the package board is limited to the surface area of the rear surface  3   b  of the circuit board  3 . Accordingly, it is possible to reduce the mounting area of the semiconductor device  1  on the package board, and achieve a reduction in the size of the package board. 
     Moreover, when manufacturing a plurality of semiconductor devices  1 , by joining together a plurality of the lid frames  7  using the joining portions  29 , the positioning of the respective lid frames  7  on the respective semiconductor chips  5  that have been placed on the circuit board  3  can be performed easily. Moreover, it becomes possible to easily manufacture a plurality of semiconductor devices  1  simultaneously, and it is possible to achieve an improvement in the manufacturing efficiency of the semiconductor devices  1 . 
     Furthermore, in the pressing step because the aperture portion  19  of the lid frame  7  is abutted against the bottom surface F 3  of the mold F via sheet S, it is possible to prevent the mold F becoming damaged by the contact with the aperture portion  19 . Moreover, because the molding step is performed with the sheet S placed on the bottom surface F 3  of the mold F, it is possible to prevent the mold F becoming contaminated by molten resin. 
     Because the aperture end  19   b  of the aperture portion  19  is sealed off by the dicing tape D from the end of the molding step until the semiconductor device  1  is mounted on an electronic instrument, any dust and dirt or moisture is prevented from entering through the aperture end  19   b  into the space portion  25  during the dicing step or when the semiconductor device  1  is being transported or mounted, and any erroneous operation of the semiconductor chip  5  that is caused by such dust and dirt or moisture can be reliably prevented. 
     Note that in the above described embodiment, the shield component  39  is placed on the front surface  3   a  of the circuit board  3 , however, the present invention is not limited to this and it is also possible for the shield component  39  to be formed so as to surround the space portion  25  including at least the lid body  17  and the semiconductor chip  5 . Namely, it is possible for a portion of the shield component  39  to be placed inside the circuit board  3 . 
     Next, a second embodiment of the present invention will be described with reference made to  FIG. 6 . Note that, here, only points of variance with the first embodiment will be described and component elements that are the same as those of the semiconductor device  1  are given the same symbols and a description thereof is omitted. 
     As is shown in  FIG. 6 , a recessed portion  53  that has a substantially rectangular shape in cross sectional view is formed in a circuit board  4  that constitutes a semiconductor device  51  according to this embodiment by being hollowed out in the thickness direction from a front surface  4   a  thereof. A semiconductor chip  5  is placed on a bottom surface  53   a  of this recessed portion  53 . 
     A lid frame  7  is placed so as to extend across this recessed portion  53 . Namely, the distal end portions  23   a  of the lid body  17  are placed on the front surface  4   a  of the circuit board  4  that is positioned on a peripheral edge of the recessed portion  53 . In this state, a hollow space portion  55  is created by the recessed portion  53  of the circuit board  4  and the top walls  21  and side walls  23  of the lid frame  7 . 
     A plurality of pad electrodes  57  that are electrically connected to the pad electrodes  15  of the semiconductor chip  5  by wires  37  are placed on the bottom surface  53   a  of the recessed portion  53 . These pad electrodes  57  are electrically connected via wiring portions  35  to the plurality of solder balls  33  that are placed on the rear surface  4   b  of the circuit substrate  4 . 
     Moreover, a shield component  59  that encloses the space portion  55  including the semiconductor chip  5  as well as the shield portion  27  of the lid frame  7  is provided on the circuit board  4 . Namely, the shield component  59  is placed on the bottom surface  53   a  of the recessed portion  53 , and is provided so as to be exposed from peripheral edges of the bottom surface  53   a  right through the interior of the circuit board  4  as far as the front surface  4   a  of the circuit board  4  that is positioned on the peripheral edges of the recessed portion  53 . Accordingly, in a state in which the lid frame  7  is placed on the front surface  4   a  of the circuit board  4 , the shield component  59  is in contact with the shield portion  27  of the lid frame  7 . 
     Note that, as a result of the above, the semiconductor chip  5  is fixed to the front surface  4   a  of the circuit board  4  via this shield component  59 , and the distal end portions  23   a  of the side walls  23  of the lid frame  7  are also placed on the front surface  4   a  of the circuit board  4  via this shield component  59 . Holes  59   a  are formed in this shield component  59  avoiding the respective pad electrodes  57  in order that the pad electrodes  57  of the circuit board  4  are exposed to the space portion  55 , so that the shield component  59  and the pad electrodes  57  are electrically insulated from each other. 
     The semiconductor device  51  that is constructed in the manner described above can be manufactured using the same pair of molds E and F as in the first embodiment. 
     According to the above described semiconductor device  51 , the same effects can be achieved as those of the first embodiment. 
     In addition, because the semiconductor chip  5  and the pad electrodes  57  that are placed on the bottom surface  53   a  of the recessed portion  53  are electrically connected by the wires  37 , it is possible to prevent the wires  37  from protruding to the outside of the recessed portion  53 . Accordingly, when the frame placement step and the pressing step are being performed with these wires  37  having been placed in position, it is possible to reliably deform the wires  37  while preventing the wires  37  from coming into contact with the lid frame  7 . Accordingly, when manufacturing the semiconductor device  51 , it is possible to easily secure an electrical connection between the circuit board  4  and the semiconductor chip  5 . 
     Note that, in the above described first and second embodiments, the aperture portion  19  protrudes from a center portion of the top walls  21 , however, the present invention is not limited to this, and it is sufficient if the aperture portion  19  extends in a direction in which it moves further away from the front surfaces  3   a  and  4   a  of the circuit boards  3  and  4  beyond at least the top walls  21  so as to enable the space portions  25  and  55  to open onto the outside via the surface  9   a  of the resin mold portion  9 . Namely, it is sufficient if the aperture portion  19  protrudes from the side walls  23  of the lid body  17 . Even in this structure, because the aperture portion  19  is able to be pressed by the mold F, when manufacturing the semiconductor devices  1  and  51 , it is possible to prevent molten resin flowing into the hollow spaces  25  and  55 , and prevent the lid frame  7  being moved relative to the circuit boards  3  and  4 . 
     Moreover, the shield portion  27  of the lid frame  7  is formed by coating a conductive paste over the inner surfaces  21   a  and  23   b  of the top walls  21  and side walls  23  that constitute the lid body  17 , and also over the inner surfaces of the insertion hole  19   a  of the aperture portion  19 , however, the present invention is not limited to this, and it is sufficient if electrical noise is prevented from entering into the space portions  25  and  55  at least via the lid body  17 . Namely, the shield portion  27  may be formed, for example, by coating a conductive paste over the outer surfaces of the top wall  21  and the side walls  23 , and also over the outer circumferential surface of the aperture portion  19 , or by immersing these in a conductive paste. 
     Furthermore, it is also possible, for example, to form the lid frame  7  using a conductive resin, and coat a non-conductive resin on the inner surfaces  21   a  and  23   b  of the lid body  17  that face the space portions  25  and  55 , and on the inner surface of the insertion hole  19   a  of the aperture portion  19 . It is also possible coat both the non-conductive resin and the shield portion  27  on top of each other on these inner surfaces  21   a  and  23   b.    
     Moreover, the lid body  17  and the aperture portion  19  are provided with conductivity, however, the present invention is not limited to this, and it is sufficient if at least the lid body  17  that constitutes the space portions  25  and  55  is provided with conductivity. 
     Furthermore, the lid frame  7  is formed from a heat-resistant thermosetting resin, however, it is sufficient if it is formed from at least a resin material. It is, however, preferable if the lid frame  7  is formed from a resin material that has sufficient heat resistance to prevent it from being thermally deformed when the lid frame  7  is heated in the molding step and when the semiconductor devices  1  and  51  are being packaged on the package board. Specifically, it is preferable if the lid frame  7  is formed from a resin material such as engineering plastic that is able to withstand heat up to approximately 170 to 180° C. 
     Moreover, if consideration is given to the prevention of the intrusion of electrical noise into the space portions  25  and  55 , then it is also possible to form the lid frame  7  from a conductive material such as a metal. In the case of this structure, the lid frame  7  is able to withstand higher temperatures during the molding step and during the packaging of the semiconductor device  1  on the package board. Moreover, because a conductive material has greater rigidity compared to a resin material, it is possible to prevent the top walls  21  and the side walls  23  of the lid frame  7  bending and becoming deformed in the molding step, and it is easy to secure the space portions  25  and  55 . 
     Furthermore, the lid frame  7  is not limited to being formed from the above described resin material or conductive material. For example, if it is particularly important to prevent electrostatic charges in the semiconductor chip  5 , then it is preferable for the lid frame  7  to be formed from a resin material in which carbon has been mixed. 
     When manufacturing the semiconductor devices  1  and  51 , a plurality of lid frames  7  that are joined by the joining portions  29  were placed on the front surfaces  3   a  and  4   a  of the circuit boards  3  and  4 , however, it is also possible to use individual lid frames  7  that do not have the joining portions  29 . 
     Furthermore, the solder balls  33  that are electrically connected to the wiring portions  35  were provided on the rear surfaces  3   b  and  4   b  of the circuit boards  3  and  4 , however, the present invention is not limited to this and it is sufficient if at least electrode portions that are to be electrically connected to the package board  45  are exposed on the rear surfaces  3   b  and  4   b  of the circuit boards  3  and  4 . 
     Namely, it is also possible for these electrode portions to be formed integrally with the wiring portions  35 , and it is also possible for the wiring portions  35  to be made to protrude from the rear surfaces  3   b  and  4   b  of the circuit boards  3  and  4 . 
     Moreover, a single piece of dicing tape D was adhered over the plurality of semiconductor devices  1  and  51 , however, the present invention is not limited to this and it is also possible, for example, to adhere individual screening seals onto the surface  9   a  of the resin mold portion  9  of the respective semiconductor devices  1  and  51  and thereby seal off the aperture ends  19   b  of the aperture portions  19 . 
     Furthermore, a screening seal such as the dicing tape D was adhered onto the surface  9   a  of the resin mold portion  9  in order to seal off the aperture ends  19   b  of the aperture portions  19 , however, it is not essential for the screening seal to be adhered thereto. Namely, for example, as is shown in  FIG. 7 , when transporting semiconductor devices  1  and  51  that have completed the manufacturing process, it is also possible for the surface  9   a  of the resin mold portion  9  to be positioned facing a surface  61   a  of a transporting tray (i.e., mounting base)  61  on which the semiconductor devices  1  and  51  are mounted for transporting. In the case of this structure as well, it is possible to prevent dust and dirt or moisture from entering the hollow spaces  25  and  55  through the aperture end  19   b  when the semiconductor devices  1  and  51  are being transported, and any erroneous operation of the semiconductor devices  1  and  51  that might be caused by this dust and dirt or moisture can be prevented. 
     Moreover, the semiconductor chip  5  and the circuit boards  3  and  4  are electrically connected by the wires  37 , however, the present invention is not limited to this and it is simply sufficient for the semiconductor chip  5  and the circuit boards  3  and  4  to be electrically connected. Namely, it is also possible, for example, for the semiconductor chip  5  to be placed on the front surface  53   a  of the recessed portion  53  of the circuit boards  3  and  4  so that the pad electrodes  15 ,  31 , and  57  of the semiconductor chip  5  and the circuit boards  3  and  4  are facing each other. 
     Furthermore, a sound pressure sensor chip is described above as an example of the semiconductor chip  5 , however, the semiconductor chip  5  may also be a pressure sensor chip that, for example, measures the pressure of a space outside the semiconductor device  1  and also changes in this pressure. 
       FIG. 8  through  FIG. 13  show a third embodiment of the present invention. As is shown in  FIG. 8  through  FIG. 10 , a semiconductor device  101  is provided with a metal stage portion  103  that is formed substantially in a plate shape, a plurality of metal electrical connection leads  105  and a connecting lead  106  that are placed around the stage portion  103 , a semiconductor chip  107 , an IC  109 , and a through electrode  111  that are placed on a rear surface (i.e., one surface)  103   a  of the stage portion, a chip covering lid body  113  that is placed on the rear surface  103   a  of the stage portion  103 , a stage covering lid body  115  that is placed on a front surface (i.e., another surface)  103   b  of the stage portion  103 , and a resin mold portion  117  that fixes the stage portion  103 , the leads  105  and  106 , the chip covering lid body  113 , and the stage covering lid body  115  in a single integral unit. 
     The stage portion  103  is formed substantially in a rectangular shape when seen in plan view, and a plurality of chip through holes  103   c  and a wiring through hole  103   d  are provided so as to penetrate in the thickness direction of the stage portion  103 . 
     The plurality of leads  105  and  106  are arranged in parallel with a direction that extends along the rear surface  103   a  and the front surface  103   b  of the stage portion  103 , and distal end portions thereof protrude from side portions of the resin mold portion  117 . Note that, although omitted from the drawings, it is also possible for the distal end portions of the respective leads  105  and  106  to be formed so as to extend the thickness direction of the stage portion  103 , so that the semiconductor device  101  is formed as what is known as a quad flat package (QFP). The connecting lead  106  is connected to the stage portion  103 , while the other electrical connection leads  105  are positioned such that a gap is provided between them and the stage portion  103 . A portion of these electrical connection leads  105  are electrically connected via the through electrode  111  and the IC  109  to the semiconductor chip  107  (described below). 
     The semiconductor chip  107  is adhesively fixed via a non-conductive adhesive agent  118   a  which is electrically non-conductive to the rear surface  103   a  of the stage portion  103  so as to cover the chip through holes  103   c  in the stage portion  103 . Namely, the semiconductor chip  107  is electrically insulated from the stage portion  103 . The semiconductor chip  107  is what is known as a sound pressure sensor chip that converts sound into electrical signals, and is provided with a diaphragm  107   a  that vibrates in accordance with sound that reaches the semiconductor chip  107 . This diaphragm  107   a  is placed on the rear surface  103   a  of the stage portion  103  so as to face the chip through holes  103   c.    
     The through electrode  111  is provided with a plurality of insertion terminal portions  119  that are formed from a conductive material, and a non-conductive supporting block  121  that is formed from an electrically non-conductive material and supports the respective insertion terminal portions  119  from the periphery thereof. The through electrodes  111  are adhesively fixed via a non-conductive adhesive agent  118   b , in the same way as the semiconductor chip  107 , to the rear surface  103   a  of the stage portion  103  so as to cover the wiring through hole  103   d . The plurality of insertion terminal portions  119  are exposed not only on the rear surface  103   a  side of the stage portion  103 , but also on the front surface  103   b  side of the stage portion  103  via the wiring through hole  103   d , and are electrically connected to the plurality leads  105  by wires (i.e., second wires)  123  via the wiring through hole  103   d.    
     The IC  109  controls operations of the semiconductor chip  107 , and, in the same way as the semiconductor chip  107 , is adhesively fixed via a non-conductive adhesive agent  118   c  to the rear surface  103   a  of the stage portion  103  so as to be positioned between the semiconductor chip  107  and the through electrode  111 . This IC  109  is electrically connected to the semiconductor chip  107  and the respective insertion terminal portions  119  of the through electrode  111  by a plurality of wires (i.e., first wires)  125 . 
     An electrical wiring device  127  that connects the semiconductor chip  107  to the leads  105  is formed by the IC  109 , the though electrodes  111 , and the wires  123  and  125 . 
     The chip covering lid body  113  is placed on the rear surface  103   a  of the stage portion  103  so as to cover the semiconductor chip  107 , the IC  109  and the through electrode  111 . This chip covering lid body  113  is provided with a substantially plate-shaped top wall  129  that is placed at a position separated in the thickness direction from the rear surface  103   a  of the stage portion  103 , and side walls  131  that protrude from peripheral edges of the top wall  129  towards the rear surface  103   a  of the stage portion  103 . Namely, the chip covering lid body  113  is formed by the top wall  129  and the side walls  131  substantially in a concave shape that is open on the distal end portion side of the side walls  131 . 
     Accordingly, in a state in which the distal end portions of the side walls  131  are placed on the rear surface  103   a  of the stage portion  103 , a hollow first space portion  133  is created by the rear surface  103   a  of the stage portion  103  and the inner surfaces of the top wall  120  and side walls  131 . Note that in this state, the inner surfaces of the top wall  129  and side walls  131  are positioned so as not to come into contact with the semiconductor chip  107  and the wires  125  that are located in the first space portion  133 . 
     The chip covering lid body  113  is formed from a conductive material, and is constructed by coating a non-conductive paste (i.e., chip insulating portion)  135  that is formed from an electrically non-conductive material on inner surfaces of the top wall  129  and side walls  131  that face the first space portion  133 . The chip covering lid body  113  is also electrically connected to the stage portion  103 . Accordingly, the semiconductor chip  107  and the IC  109  are also electrically enclosed by the stage portion  103  and the chip covering lid body  113  which has conductivity. Moreover, the non-conductive paste  135  makes it possible to prevent the semiconductor chip  107 , the IC  109 , the through electrode  111 , and the wires  125  that are located in the first hollow space  133  from becoming electrically conductive with the chip covering lid body  113 . 
     The stage covering lid body  115  is located on the front surface  103   b  of the stage portion  103  so as to cover the chip through holes  103   c . This stage covering lid body  115  is provided with a substantially plate-shaped top wall  137  that is placed at a position separated in the thickness direction from the front surface  103   b  of the stage portion  103 , and side walls  139  that protrude from peripheral edges of the top wall  137  towards the front surface  103   b  of the stage portion  103 , and also with a substantially cylindrical aperture portion  141  that protrudes from the top wall  137  in a direction in which it moves away from the front surface  103   b  of the stage portion  103 . Namely, the stage covering lid body  115  is formed by the top wall  137  and the side walls  139  substantially in a concave shape that is open on the distal end portion side of the side walls  139 . 
     Accordingly, in a state in which the distal end portions of the side walls  139  are placed on the front surface  103   b  of the stage portion  103 , a hollow second space portion  143  is created by the front surface  103   b  of the stage portion  103  and the inner surfaces of the top wall  137  and side walls  139 . 
     The substantially cylindrical aperture portion  141  has the role of enabling the second space portion  143  to be exposed to the outside of the resin mold portion  117 , and the semiconductor chip  107  is placed in a position where it is connected to the outside via the chip through holes  103   c , the second hollow space  143 , and the aperture portion  141 . Namely, the chip through holes  103   c  and the semiconductor chip  107  are offset so as not to overlap with each other in the thickness direction of the aperture portion  141  and the stage portion  103  such that they are not exposed directly to the outside through the aperture portion  141  of the stage covering lid body  115 . 
     Moreover, in the same way as the chip covering lid body  113 , the stage covering lid body  115  is formed from a conductive material and is electrically connected to the stage portion  103 . Accordingly, the second space portion  143  is also electrically enclosed by the stage portion  103  and the stage covering lid body  115  which has conductivity. 
     Next, a method of manufacturing the semiconductor device  101  that has the above described structure above will be described. 
     Firstly, as is shown in  FIG. 11 , a lead frame  151  in which the stage portion  103  and the plurality of leads  105  and  106  are joined together as a single unit is formed by performing a pressing process or an etching process or by performing both processes on a thin plate-shaped metal plate (frame preparation step). Namely, the plurality of leads  105  and  106  are joined together by a rectangular frame portion  153  that is formed so as to surround the stage portion  103 , and the electrical connection leads  105  and the stage portion  103  are mutually connected via this rectangular frame portion  153  and the connecting lead  106 . 
     Moreover, in this frame preparation step, the chip through holes  103   c  and the wiring through hole  103   d  that penetrate in the thickness direction of the stage portion  103  are formed at the same time as the stage portion  103 , the leads  105  and  106 , and the rectangular frame portion  153  in the aforementioned pressing process or etching process. 
     Next, as is shown in  FIG. 12 , the semiconductor chip  107  is adhesively fixed using a non-conductive adhesive agent  118   a  to the rear surface  103   a  of the stage portion  103  such that the semiconductor chip  107  overlaps with the chip through holes  103   c  in the thickness direction of the stage portion  103  (chip adhesion step). 
     In the same way as the semiconductor chip  107 , the through electrode  111  is adhesively fixed to the rear surface  103   a  of the stage portion  103  using a non-conductive adhesive agent  118   b  (terminal portion mounting step). At this time, the insertion terminal portions  119  of the through electrode  111  are exposed from both the surface  103   a  and the surface  103   b  of the stage portion  103  via the wiring through hole  103   d  of the stage portion  103 . In addition, the wiring through hole  103   d  is completely closed off by the through electrode  111 . This terminal portion mounting step may be performed either before or after or at the same time as the chip adhesion step. 
     Furthermore, in the same way as the above described semiconductor chip  7  and through electrode  111 , the IC  109  is also adhered to the rear surface  103   a  of the stage portion  103  via a non-conductive adhesive agent  118   c . This adhering of the IC  109  may be performed either before or after or at the same time as the chip adhesion step and the terminal portion mounting step. 
     Next, the wires  125  are positioned respectively between the semiconductor chip  107  and the IC  109  and between the IC  109  and the through electrode  111  so that the semiconductor chip  107  and the insertion terminal portions  119  of the through electrode  111  are electrically connected via the IC  109  (a first wire placement step). Furthermore, the chip covering lid body  113  is placed on the rear surface  103   a  of the stage portion  103  so as to cover the semiconductor chip  107 , the IC  109  and the through electrode  111 . As a result, a first hollow space portion  133  that surrounds the semiconductor chip  107  is formed by the chip covering lid body  113  and the stage portion  103  (chip lid body placement step). 
     The chip adhesion step, the terminal portion mounting step, the first wiring step, and the chip lid body placement step are performed with the rear surface  103   a  of the stage portion  103  facing upwards. 
     Thereafter, as is shown in  FIG. 13 , with the front surface  103   a  of the stage portion  103  facing upwards, wire bonding is performed to place wires  123  between the plurality of leads  105  and the insertion terminal portions  119  via the wiring insertion holes  103 , thereby electrically connecting the leads  105  to the through electrode  111  (second wire placement step). 
     In addition, the stage covering lid body  115  is placed on the front surface  103   b  of the stage portion  103  so as to cover the front surface  103   b  of the stage portion  103  including the chip through holes  103   c . As a result, a second hollow space portion  143  is formed by the stage covering lid body  115  and the stage portion  103  (stage lid body placement step). This stage lid body placement step may be performed prior to the second wire placement step or subsequent to the second wire placement step. 
     Thereafter, a pair of molds  100 E and  100 F that are used to form a resin mold portion are placed on the front surface  103   b  side and the rear surface  103   a  side of the stage portion  103 , and distal end portions of the leads  105  and  106  as well as the rectangular frame portion  153  are sandwiched by surfaces  100 E 1  and  100 F 1  of this pair of molds  100 E and  100 F. The one mold  100 E that is placed on the rear surface  103   a  side of the stage portion  103  has a recessed portion  100 E 2  that is hollowed out from the surface  100 E 1 , while the other mold  100 F that is placed on the front surface  103   b  side of the stage portion  103  has a recessed portion  100 F 2  that is hollowed out from the surface  100 F 1 . 
     In a state of being sandwiched by the pair of molds  100 E and  100 F, the chip covering lid body  113  is housed within the recessed portion  100 E 2  of the one mold  100 E. In addition, a portion of the top wall  129  thereof abuts against a protruding portion  100 E 4  that is formed so as to protrude from a bottom surface  100 E 3  of the recessed portion  100 E 2 . At this time, the chip covering lid body  113  is pressed against the rear surface  103   a  of the stage portion  103  by the protruding portion  100 E 4  of the one mold  100 E. 
     Moreover, in this state, the stage covering lid body  115  is housed within the recessed portion  100 F 2  of the other mold  100 F. In addition, the distal end of the aperture portion  141  thereof abuts against a bottom surface  100 F 3  of the recessed portion  100 F 2 , so that the aperture portion  141  is closed off by the bottom surface  100 F 3  of this recessed portion  100 F 2 . At this time, the stage covering lid body  115  is pressed against the front surface  103   b  of the stage portion  103  by the other mold  100 F. 
     Note that when the leads  105  and  106  and the rectangular frame portion  153  are being sandwiched by the pair of molds  100 E and  100 F, it is preferable for a resin sheet (not shown) that is in the shape of a thin film and is able to be peeled off easily from the resin which forms the resin mold portion and from the respective molds  100 E and  100 F to be placed in the gap between the chip covering lid body  113  and the one mold  100 E, and also in the gap between the stage covering lid body  115  and the other mold  100 F. This resin sheet is formed, for example, from fluorine resin. 
     Thereafter, a thermosetting resin such as an epoxy resin is poured in a molten state into resin forming space that is formed by the pair of molds  100 E and  100 F, thereby forming a resin molded portion  117  in which the stage portion  103 , the chip covering lead body  113 , the stage covering lead body  115 , and the leads  105  and  106  are fixed in a single integral unit (molding step). 
     In this molding step, because the protruding portion  100 E 4  of the one mold  100 E presses the chip covering lid body  113  against the rear surface  103   a  of the stage portion  103 , the gap between the chip covering lid body  113  and the rear surface  103   a  of the stage portion  103  can be reliably sealed off. Moreover, because the bottom surface  100 F 3  of the other mold  100 F presses the aperture portion  141  of the stage covering lid body  115  against the front surface  103   b  of the stage portion  103 , the gap between the stage covering lid body  115  and the front surface  103   b  of the stage portion  103  as well as the gap between the aperture portion  141  of the stage covering lid body  115  and the bottom surface  100 F 3  of the other mold  100 F can be reliably sealed off. 
     As a result of the above, it is possible to prevent molten resin that has been poured into the resin forming space entering into the first space portion  133  and the second space portion  143 . Moreover, because the wiring through hole  103   d  is also completely sealed off by the through electrode  111 , the molten resin is also unable to flow into the first space portion  133  via the wiring through hole  103   d.    
     Note that, in this molding step, after the resin forming space has been filled by the molten resin, the resin mold portion  117  is formed by then hardening the resin using heat, as is shown in  FIGS. 8 through 10 . Finally, the rectangular frame portion  153  is cut off and each of the leads  105  and  106  that protrude to the outside of the resin mold portion  117  are separated thereby ending the manufacturing of the semiconductor device  101 . 
     When mounting a semiconductor device  101  that has been manufactured in the manner described above on an electronic device such as a mobile phone or the like, for example, the leads  105  and  106  that protrude to the outside from the resin mold portion  117  are mutually electrically connected with other electronic components and electrical components of the electronic device. 
     In this semiconductor device  101 , when pressure variations such as sounds or the like reach the diaphragm  107   a  of the semiconductor chip  107  via the aperture portion  141 , the second space portion  143 , and the chip through holes  103   c  of the stage portion  103 , the diaphragm  107   a  vibrates based on these pressure variations thereby enabling the pressure variations to be detected. 
     According to the above described semiconductor device  101  and to a method of manufacturing this semiconductor device, without the shape or size of the stage portion  103  having to be altered, the volume of the first space portion  133  can be easily altered in accordance with the shape and size of only the chip covering lid body  113  that is mounted in the chip lid body placement step. Accordingly, the volume of the first space portion  133  can be satisfactorily secured, and it is possible to reduce pressure changes in the first space portion  133  that are based on vibrations of the diaphragm  107   a  of the semiconductor chip  107 . Because of this, the diaphragm  107  a of the semiconductor chip  107  is unaffected by pressure changes in the first space portion  133 , and is able to vibrate accurately in response to pressure vibrations from sound or the like from the outside. 
     Moreover, because it is possible to easily alter the design of a semiconductor device  101  in accordance with the characteristics of the semiconductor chip  107 , it is possible to improve the manufacturing efficiency of the semiconductor device  101  and to easily reduce the costs of manufacturing the semiconductor device  101 . 
     In addition, according to the above described semiconductor device  101 , by forming the second space portion  143  using the stage covering lid body  115  that is provided with the aperture portion  141 , it is possible to easily change the position of the aperture portion  141  relative to the chip through holes  103   c  and the semiconductor chip  107 . Namely, the chip through holes  103   c  and the aperture portion  141  are offset so as not to overlap with each other in the thickness direction of the stage portion  103  without incurring any increase in the costs of manufacturing the semiconductor device  101 . Accordingly, even if dust and dirt or water droplets from the outside enter into the second space portion  143  via the aperture portion  141 , it is easy to prevent this dust and dirt or water droplets directly reaching the semiconductor chip  7 . 
     Furthermore, because the conductive stage portion  103  and the chip covering lid body  113  enclose the semiconductor chip  107 , even if electrical noise that is generated on the outside of the semiconductor device  101  intrudes into the resin mold portion  117 , in the stage portion  103  and the chip covering lid body  113  the noise is prevented from intruding into the first space portion  133  and is reliably prevented from reaching the semiconductor chip  107 . 
     Because the conductive stage portion  103  and the stage covering lid body  115  overlap each other in the thickness direction of the stage portion  103 , even if electrical noise that is generated on the outside of the semiconductor device  101  intrudes into the resin mold portion  117  from the front surface  103   b  side of the stage portion  103 , in the stage portion  103  and the stage covering lid body  115  the noise is prevented from intruding into the first space portion  133  and is reliably prevented from reaching the semiconductor chip  107 . 
     Because of the above, any erroneous operation of the semiconductor chip  107  that is caused by such noise can be reliably prevented. 
     Furthermore, by coating the non-conductive paste  135  on the inner surfaces of the chip covering lid body  113 , it is possible to prevent the chip covering lid body  113 , which is conductive, from becoming electrically connected to the electrical wiring such as the semiconductor chip  107  and the wires  125  that extend from the semiconductor chip  107 . Consequently, short-circuiting of the electrical circuitry of the semiconductor device  101  can be prevented. 
     Moreover, by mutually electrically connecting each of the wires  125  and  123  that extend from the semiconductor chip  107  and the leads  105  via the wiring through hole  103   d  and the through electrode  111 , even if the leads  105  are positioned on the outer side of the first space portion  133  where the semiconductor chip  107  has been placed, it is still possible to mutually electrically connect the semiconductor chip  107  and the leads  105 . 
     Furthermore, according to the method of manufacturing the semiconductor device  101 , because the stage portion  103  on which the semiconductor chip  107  has been placed, the leads  105 , the chip through holes  103   c , and the wiring through hole  103   d  and  106  can be formed simply by performing a pressing process or an etching process on a thin metal plate in the frame preparation step, the semiconductor device  101  can be manufactured at low cost compared with when a circuit board is used as is the case conventionally. 
     Moreover, because it is possible for the processing from the chip adhesion step to the chip lid body placement step to be performed with the rear surface  103   a  of the stage portion  103  facing upwards, and with the second wiring step subsequently performed with the front surface  103   b  of the stage portion  103  facing upwards, the semiconductor device  101  can be manufactured easily. 
     Note that in the above described embodiment, the through electrode  111  is adhesively fixed to the rear surface  103   a  of the stage portion  103  via the non-conductive adhesive agent  118   b , however, the present invention is not limited to this, and it is also possible for the through electrode  111  to be fixed in a state of electrical insulation from the stage portion  103  so as to cover at least the wiring through hole  103   d . Namely, it is also possible for the through electrode  111  to be adhesively fixed for example, to the front surface  103   b  of the stage portion  103 . 
     Moreover, for example as is shown in  FIG. 14 , it is also possible for a through electrode  161  to be inserted through the wiring through hole  103   d  with no gap provided between them. Note that, in this structure as well, because the respective insertion terminal portions  162  are supported at the periphery thereof by a non-conductive supporting block  163 , the respective insertion terminal portions  162  do not come into contact with the stage portion  103 , namely, are electrically insulated from the stage portion  103 . By employing this structure, the wiring through hole  3   d  can be easily and reliably sealed off, and the positioning of the through electrode  161  relative to the stage portion  3  can be performed easily. 
     Moreover, as is shown in  FIG. 14 , when connecting surfaces  162   a  and  162   b  of the respective insertion terminal portions  162  to which end portions of the respective wires  123  and  125  are bonded are placed in a position where they protrude from the front surface  103   b  and rear surface  103   a  of the stage portion  103 , then it is also possible to provide a conductive plating  165  extending from the connecting surfaces  162   a  and  162   b  of the insertion terminal portions  162  across end surfaces  163   a  and  163   b  of the non-conductive supporting block  163  which form a flat surface with the connecting surfaces  162   a  and  162   b . In this case, the adhesion surface area of the respective wires  123  and  125  can be enlarged by the conductive plating  165 . Accordingly, the respective wires  123  and  125  can be adhered easily without the wire bonder that is used to adhere the wires  123  and  125  having to be positioned with an unduly high degree of accuracy. 
     Furthermore, the plurality of leads  105  and  106  are made to protrude to the outside from side portions of the resin mold portion  117 , however, the present invention is not limited to this. For example, as is shown in  FIG. 15 , it is also possible for a plurality of leads  167  to be formed so as be exposed directly from a bottom surface  117   a  of the resin mold portion  117 . Namely, a semiconductor device  169  can be constructed as what is known as a quad flat non-lead (QFN). 
     Moreover, the stage covering lid body  115  is placed on the front surface  103   b  of the stage portion  103 , however, the present invention is not limited to this and it is sufficient if the second space portion is formed such that at least the chip through holes  103   c  are in communication with the outside of the resin mold portion  117  via the front surface  103   b  of the stage portion  103 . Namely, for example, as is shown in  FIG. 16 , it is also possible to form a hole  171  in the resin mold portion  117  that allows the chip through holes  103   c  to be exposed to the outside, so that a second space portion  173  is formed by this hole  171 . 
     Here, the second space portion  173  can be formed, for example, by providing protrusions that abut against the front surface  103   b  of the stage portion  103  on the mold that is used to form the resin mold portion. In this structure, as in the above described embodiment, the stage covering lid body  115  and the stage lid body placement step are unnecessary, thereby enabling an improvement in the manufacturing efficiency of the semiconductor device  174  to be achieved. 
     Note that when a conductive material is formed on inner surfaces of the hole  171  that forms this second space portion  173 , it is possible to prevent externally generated noise reaching the semiconductor chip  107  via the resin mold portion  117 . 
     Furthermore, the chip covering lid body  113  is formed substantially in a concave shape that is open on the rear surface  103   a  side of the stage portion  103 , however, for example, as is shown in  FIG. 17 , in addition to this, it is also possible to create a chip covering lid body  177  that is formed integrally with protruding portions  175  that extend in a direction in which they move away from the rear surface  103   a  of the stage portion  103  beyond the top wall  129 . Note that distal end portions of these protruding portions  175  are exposed to the outside at the bottom surface  117   a  of the resin mold portion  117  which is facing in the same direction as the rear surface  103   a  of the stage portion  103 . 
     In the case of this structure, in the same way as in the above described embodiment, in the molding step, when the stage portion  103  is sandwiched in the thickness direction thereof by the pair of molds  100 E and  100 F, the protruding portions  175  can be abutted against the bottom surface  100 E 3  of the one mold  100 E (see  FIG. 13 ). Because of this, the chip covering lid body  177  can be pressed by the one mold  100 E against the rear surface  103   a  of the stage portion  103 . Namely, it is no longer necessary to form the protruding portion  100 E 4  on the one mold  100 E in order to hold the top wall  129 , as in the above described embodiment, so that the one mold  100 E can be manufactured at low cost. 
     Moreover, in this state, because a gap is formed by the protruding portions  175  between the top wall  129  and the bottom surface  100 E 3  of the one mold  100 E, the entire top wall  129  can be embedded inside the resin mold portion  117 . 
     Furthermore, in the above described structure, by making the respective protruding portions  175  able to be elastically deformed relative to the top wall  129  of the chip covering lid body  177 , it is possible to limit the pressing force of the one mold  100 E against the chip covering lid body  177  to a moderate size. 
     Moreover, the electrical wiring device  127  is formed by the IC  109 , the through electrode  111 , and the wires  123  and  125 , however, the present invention is not limited to this, and it is sufficient if at least the semiconductor chip  107  and the leads  105  are electrically connected. Namely, for example, as is shown in  FIGS. 18 to 20 , it is also possible for leads  181  to be positioned such that they are exposed to a first space portion  183 . 
     However, in the case of the above described structure, it is necessary to ensure that resin does not enter into the first space portion  183  through gaps between the respective leads  181  and a stage portion  187 , or through gaps between mutually adjacent leads  181  and  181 . Specifically, for example, it is possible to form a covering portion  191  on a stage covering lid body  189  that covers the gaps between the respective leads  181  and the stage portion  187 , and to fill the gaps between mutually adjacent leads  181  and  181  by placing distal end portions of side walls  195  of the covering portion  191  and a chip covering lid body  193  in contact with each other. 
     In particular, when distal end portions of side walls  195  of the covering portion  191  and the chip covering lid body  193  are placed in contact with each other via polyimide tape, by changing the polyimide tape, the gaps between the respective leads  181  can be filled reliably and resin can be reliably prevented from entering into the first space  183 . Moreover, because polyimide tape is non-conductive, it is possible to electrically insulate the leads  181  from the chip covering lid body  193  and the stage covering lid body  189 . 
     In addition, in the case of this structure, it is possible to electrically connect the IC  109  to the leads  181  using the wires  185  without using the through electrode  111 , as in the case of the third embodiment. 
     Moreover, in the case of this structure, because the aforementioned wires  185  are placed in the first space  183 , the wires  185  do not come into contact with the resin mold portion  117 . Because of this, when the resin mold portion is being formed using molten resin in the molding step, it is possible to prevent the wires  185  being pushed by the flow of molten resin and becoming deformed. Accordingly, it is possible to easily secure an electrical connection between the semiconductor chip  107  and the leads  181 . 
     Furthermore, in the first wiring step, the semiconductor chip  107  and the IC  109  can be electrically connected by the wires  125  while the IC  109  and the leads  181  can be electrically connected directly by the wires  185 . Because of this, it is no longer necessary to perform the second wiring step, as in the above described embodiments, and it is thus possible to achieve an improvement in the manufacturing efficiency of the semiconductor device  197 . 
     Note that, when manufacturing the semiconductor device  197  having this structure, in the chip lid body mounting step of the manufacturing method of the above described embodiment, the chip covering lid body  193  is positioned such that the leads  181  are exposed in the first space portion  183 , while in the stage lid body placement step, the stage covering lid body  189  may be positioned such that the leads  181  are covered by the covering portion  191 . 
     In the structure of the fourth embodiment shown in  FIG. 18  through  FIG. 20 , the covering portion  191  is formed on the stage covering lid body  189 , however, the present invention is not limited to this and it is sufficient if the semiconductor device  197  is structured such that at least the molten resin does not enter into the first space portion  183 . Namely, it is also possible, for example, for a non-conductive screening seal that covers the gap between the respective leads  181  and the stage portion  187  to be adhered onto a front surface (i.e., the other surface)  187   b  of the stage portion  187  and the leads  181 . In the case of this structure, by applying the structure of the semiconductor device shown in  FIG. 16 , both the stage covering lid body  189  and the stage lid body placement step are rendered unnecessary. 
     Moreover, in the above described embodiment, the first space portion  133  that encloses the semiconductor chip  107  is sealed off from the outside, however, as is shown in  FIG. 21 , for example, it is also possible for a first space portion  154  to be exposed to the outside. 
     Namely, it is also possible for a chip covering lid body  155  that is placed on the rear surface  103   a  of the stage portion  103  to be provided with a substantially cylindrical aperture portion  157  that protrudes from a top wall  156  of the chip covering lid body  155  in a direction in which it moves away from the rear surface  103   a  of the stage portion  103 . This aperture portion  157  has the role of allowing the first space portion  154  to be exposed to the outside of the resin mold portion  117 . This aperture portion  157  is formed in a position where it does not overlap in the thickness direction of the stage portion  103  with the semiconductor chip  107  so that the semiconductor chip  107  is not directly exposed to the outside. 
     In this structure, when pressure variations such as sounds or the like reach the diaphragm  107   a  of the semiconductor chip  107  via the aperture portion  157  and the first space portion  154 , the diaphragm  107   a  vibrates based on these pressure variations thereby enabling the pressure variations to be detected. Accordingly, it is also possible to employ a structure in which the stage covering lid body  158  that is placed on the front surface  103   b  of the stage portion  103  seals off the second space portion  159  to the outside. Namely, it is no longer necessary to form the same type of aperture portion as in the above described embodiments in this stage covering lid body  158 . 
     Note that when manufacturing the semiconductor device  150 , it is also possible to seal off the aperture portion  157  using the mold which is used to create the resin mold portion in order that molten resin does not flow through the aperture portion  157  into the first space portion  154  in the molding step. 
     In the case of this structure as well, in the same way as in the above described embodiment, because it is possible to easily alter the size of the sealed second space portion  159  in accordance with the shape and size of only the stage covering lid body  158 , it is possible to improve the manufacturing efficiency of the semiconductor device  150  and to easily reduce the costs of manufacturing the semiconductor device  150 . 
     Moreover, by forming the first space portion  154  using the chip covering lid body  155  that is provided with the aperture portion  157 , it is possible without incurring any increase in the costs of manufacturing the semiconductor device  150  to mutually offset the semiconductor chip  7  and the aperture portion  157  such that they do not overlap with each other in the thickness direction of the stage portion  103  in order that the semiconductor chip  107  is not exposed directly to the outside via the aperture portion  157 . Accordingly, even if dust and dirt or water droplets from the outside enter into the first space portion  154  via the aperture portion  157 , it is easy to prevent this dust and dirt or water droplets directly reaching the semiconductor chip  107 . 
     Note that in the case of this semiconductor device  150  as well, in the same way as in the semiconductor device shown in  FIG. 20 , by exposing the leads  105  in the first space portion  154 , or by forming a covering portion on the stage covering lid body  158 , it is possible to electrically connect the semiconductor chip  107  to the leads  105  without forming the wiring through hole  103   d  or using the through electrode  111 . Moreover, in this case, because it is no longer necessary to perform the second wiring step as in the above described embodiment, an improvement in the manufacturing efficiency of the semiconductor device  150  can be achieved. 
     Furthermore, in the above described embodiment, the chip covering lid body  113  and the stage covering lid body  115  are formed from a conductive material and a non-conductive paste  135  is coated on inner surfaces thereof, however the present invention is not limited to this and it is sufficient if the chip covering lid body  113  and the stage covering lid body  115  have conductivity to allow them to be electrically connected to at least the stage portion  103 . 
     Accordingly, it is also possible for the chip covering lid body  113  and the stage covering lid body  115  to be formed, for example, from a conductive material and for outer surfaces thereof to be coated with a non-conductive paste. Moreover, it is also possible for the chip covering lid body  113  and the stage covering lid body  115  to be formed, for example, from an electrically non-conductive material, and for a conductive paste to be coated on outer surfaces or inner surfaces thereof, or for a separate lid body (i.e., a chip non-conductive portion) which is non-conductive to be placed on an inner surface side and an outer surface side thereof. 
     Note that it is desirable for at least the inner surface side of the chip covering lid body  113  to be non-conductive in order to ensure electrical insulation between the semiconductor chip  107 , the IC  109 , the through electrode  111 , and the wires  125  and the chip covering lid body  113 . 
     Moreover, in the above described embodiment, the stage portion  103 , the leads  105  and  106 , and the lead frame  151  are made from metal, however, the present invention is not limited to this and it is sufficient if they simply have conductivity. Moreover, if no consideration needs to be given to preventing noise from entering into the first space portion  133 , then it is also possible for the stage portion  103  to be formed from an electrically non-conductive material. If the stage portion  3  is formed from a non-conductive material, then a conductive adhesive agent may be used when the semiconductor chip  107 , the IC  109 , and the through electrode  111  are adhered to the stage portion  103 . 
     Furthermore, the semiconductor chip  107  is formed by a pressure sensor chip which is provided with the diaphragm  107   a , however, the present invention is not limited to this and it is sufficient if at least a movable portion such as the diaphragm  107   a  that forms the semiconductor chip  107  is provided. Accordingly, the semiconductor chip may be, for example, a pressure sensor chip that measures pressure or pressure changes in an external space outside the semiconductor device  101 , or may be an acceleration sensor chip that detects rates of acceleration. 
     A semiconductor device according to a sixth embodiment of the present invention as well as a method of manufacturing the semiconductor device will now be described with reference made to  FIG. 22  through  FIG. 28 . The present embodiment relates to a semiconductor device that detects sound pressure such as noise and the like that is externally generated, and relates to a semiconductor device that is manufactured using a lead frame. 
     As is shown in  FIG. 22  through  FIG. 23 , a semiconductor device  200 A of the present embodiment includes as principal component elements: a substantially plate-shaped stage portion  201  which presents a substantially rectangular configuration when seen in plan view; a plurality of connecting leads  202  that have one end  202   a  which is connected to the stage portion  201  and that supports the stage portion  201  in an elevated state; a plurality of electrical connection leads  203  that extend from a side end side of the semiconductor device  200 A towards the stage portion  201  such that one end  203   a  thereof is positioned in the vicinity of the stage portion  201 ; a first sealing resin layer  204  that seals off the stage portion  201 , the connecting leads  202 , and the leads  203 ; a semiconductor sensor chip (i.e., a sound pressure sensor chip)  205  that has a substantially rectangular shape when seen in plan view and is fixed to a top surface  201   a  of the stage portion  201 ; an amplifier  206  that is also fixed to the top surface  201   a  of the stage portion  201  and amplifies electrical signals output by the semiconductor sensor chip  205 ; wires  207  that electrically connect together the semiconductor sensor chip  205 , the amplifier  206 , and the leads  203 ; a lid body  209  that has a substantially concave cross-section and that is mounted on the first sealing resin layer  204  and that forms a space (i.e., a first space)  212  above the semiconductor sensor chip  205  and the amplifier  206  so as to thereby cover the semiconductor sensor chip  205  and the amplifier  206 ; and a second sealing resin layer  210  that covers an outer surface  209   d  of the lid body  209  and is fixed to the first sealing resin layer  204 . 
     A through hole  201   c  that penetrates from the top surface  201   a  to a bottom surface  201   b  is formed in the stage portion  201 . In addition, suspended portions  201   d  that each extend outwards from the respective side ends of the top surface  201   a  and extend down to a bottom surface  204   a  side of the first sealing resin layer  204  are provided on the stage portion  201 . Bottom surfaces  201   e  on the distal end side of each suspended portion  201   d  are level with the bottom surface  204   a  of the first sealing resin layer  204 , and are also exposed at the bottom surface (i.e., the bottom surface of the semiconductor device  200 A)  204   a  of the first sealing resin layer  204 . The top surface  201   a  of the stage portion  201  is level with a top surface  204   b  of the first sealing resin layer  204  and is also exposed at this top surface  204   b.    
     The connecting leads  202  are each formed substantially in the shape of a flat belt, and the one end  202   a  thereof is connected to the vicinity of a corner portion of the substantially rectangular shaped (in plan view) stage portion  201  and extends towards the outer side of the stage portion  201 . Moreover, a bent portion  202   b  is provided substantially in the center in the direction in which the connecting leads  202  extend. This bent portion  202   b  is provided with a surface  202   d  that is parallel with respective top surfaces  202   c  that sandwich the bent portion  202   b  from the front and back thereof in the extension direction. These surfaces  202   d  are placed above the respective top surfaces  202   c  that sandwich the bent portion  202   b , and are also placed above the top surface  201   a  of the stage portion  201 . Here, in the connecting leads  202 , the top surfaces  202   c  are placed on substantially the same horizontal plane as the top surface  201   a  of the stage portion  201  between the one end  202   a  and the bent portion  202   b , while the top surfaces  202   c  between the bent portion  202   b  and another end  202   f  are placed below the top surfaces  202   c  between the one end  202   a  and the bent portion  202   b  and are also placed below the bottom surface  201   b  of the stage portion  201 . A bottom surface  202   e  on this other end  202   f  side is placed on substantially the same horizontal plane as the bottom surface  204   a  of the first sealing resin layer  204  and is also exposed thereat. 
     The plurality of leads  203  are provided between adjacent connecting leads  202 , and are perpendicular to opposing side ends of the stage portion  201  while extending from outer portions towards the stage portion  201 . Here, the respective leads  203  extend such that distal ends (i.e., one ends)  203   a  thereof are positioned on the stage portion  201  side of the bent portions  202   b  of adjacent connecting leads  202 . Furthermore, folded portions  203   b  are provided partway along each lead  203  in the extension direction thereof, and a bottom surface  203   d  from another end  203   c  thereof to the folded portions  203   b  is positioned on substantially the same horizontal plane as the bottom surface  204   a  of the first sealing resin layer  204 , and is also exposed thereat. In contrast to this, a top surface  203   e  from the folded portions  203   b  to the distal end  203   a  is positioned on substantially the same horizontal plane as the respective top surfaces  201   a  and  204   b  of the stage portion  201  and the first resin sealing layer  204 , and is also exposed thereat. 
     The first resin sealing layer  204  that seals the stage portion  201 , the connecting leads  202 , and the leads  203  that are constructed in this manner is provided with a top surface  204   b  and a bottom surface  204   a  that are parallel with each other, and is formed such that a portion thereof that seals the bent portion  202   b  of the connecting leads  202  protrudes upwards. In contrast, a recessed portion  204   c  whose one end is positioned above the bottom surface  204   a  of the first sealing resin layer  204  and whose other end extends to the through hole  201   c  of the stage portion  201  is provided in a portion of the first resin sealing layer  204  that is surrounded by the bottom surface  201   b  and the suspended portions  201   d  of the stage portion  201 . A second space  208  is formed by combining the recessed portion  204   c  with the through hole  201   c  that is connected thereto. 
     In the present embodiment, the width of this second space  208  in cross-sectional view is substantially the same as the width of the through hole  201   c , and the second space  208  becomes sealed off when the semiconductor sensor chip  205  is placed on the top surface  201   a  of the stage portion  201 . 
     The semiconductor sensor chip  205  is formed substantially in the shape of a flat plate, and a recessed portion  205   c  that is hollowed out from a bottom surface  205   a  towards a top surface  205   b  is formed substantially in the center of the semiconductor sensor chip  205  when seen in plan view from the bottom surface  205   a  side. A portion of this semiconductor sensor chip  205  whose thickness has been reduced by the recessed portion  205   c  forms a diaphragm (i.e., a movable electrode)  205   d , and this diaphragm  205   d  is able to deform (i.e., vibrate) by a deformation amount that corresponds to the size of sound pressure such as, for example, noise or the like that is applied to the diaphragm  205   d . Abridge resistive circuit (not shown) is formed on the top surface  205   b  side of the diaphragm  205   d . This bridge resistive circuit treats deformation of the diaphragm  205   d  as a change in the electrical resistance, and detects sound pressure by converting these changes in the electrical resistance into pressure. The bridge resistive circuit is then able to output electrical signals in accordance with the size of this sound pressure. The semiconductor sensor chip  205  that is constructed in this manner is adhered via a non-conductive component  211  that electrically insulates the stage portion  201  from the semiconductor sensor chip  205  onto the top surface  201   a  of the stage portion  201  while facing the bottom surface  205   a . At this time, the semiconductor sensor chip  205  is adhered such that the through hole  201   c  of the stage portion  201  is located directly beneath the diaphragm  205   d  so that the diaphragm  205   d  and the through hole  201   c  face each other. 
     Note that in the present embodiment an amplifier  206  such as, for example, an op-amp that has been formed as an integrated circuit (IC) is adhered via the non-conductive component  211  onto the top surface  201   a  of the stage portion  201 , and this amplifier  206  is provided in parallel with the semiconductor sensor chip  205 . 
     A plurality of bonding pads are provided respectively on the semiconductor sensor chip  205  and the amplifier  206  that have been arranged in this manner, and the semiconductor sensor chip  205  and the amplifier  206 , and also the amplifier  206  and the top surfaces  203   e  of the leads  203  that are located in the first space  212  and is exposed at the top surface  204   b  of the first resin sealing layer  204  are each connected by the respective wires  207  via these bonding pads, thereby electrically connecting together the semiconductor sensor chip  205 , the amplifier  206 , and the leads  203 . 
     The lid body  209  is formed having a substantially concave-shaped cross-section whose open side faces downwards and is formed by a flat plate-shaped top wall  209   a , side walls  209   b  that are joined to the top wall  209   a  and extend downwards, and distal end portions  209   c  that are joined to the side walls  209   b  and extend outwards in a horizontal direction. An aperture portion  209   i  that connects a first space portion  212  to the outside is provided in the top wall  209   a  of the lid body  209 , and this aperture portion  209   i  is formed so as to enable an inner surface  209   f  of the lid body  209  to extend upwards in a perpendicular direction relative to the top wall  209   a . Furthermore, supporting components  209   e  are provided on the outer surface  209   d  of the lid body  209  that is positioned at the side walls  209   b , and one end of these supporting components  209   e  is connected to the outer surface  209   d  of the side walls  209   b , while a distal end (i.e., another end) thereof is provided so as to extend to the outside as far as the top surface of the second sealing resin layer  210  (i.e., the top surface of the semiconductor device  200 A). 
     Moreover, a conductive paste  209   h  is adhered using, for example, a suitable device that performs coating or the like onto the inner surface  209   f  of the lid body  209  and onto bottom surfaces  209   g  of the distal end portions  209   c  that are connected to the inner surface  209   f , thereby forming a conductive layer  209   h . Here, in the present embodiment, the bottom surfaces  209   g  of the distal end portions  209   c  also form part of the inner surface  209   f  of the lid body  209 . 
     The lid body  209  that is constructed in this manner is mounted on the top surface  204   b  of the first sealing resin layer  204  with the bottom surface  209   g  of the portion of the distal end portion  209   c  to which the conductive paste  209   h  is adhered firmly fixed to the surface  202   d  of the bent portion  202   b  of the connecting leads  202 , and with the bottom surface  209   g  of the other portion firmly fixed to the top surface  204   b  of the first sealing resin layer  204 . As a result, a first space  212  is created in a portion surrounded by the lid body  209  and the first sealing resin layer  204 , and the semiconductor sensor chip  205 , the amplifier  206 , and the wires  207  are housed within this first space  212 . At this time, the lid body  209  is positioned with a sufficient clearance to enable the conductive paste  209   h  that is provided on the inner surface  209   f  to be held in a state of non-contact with the semiconductor sensor chip  205 , the amplifier  206 , and the wires  207 . In addition, the surfaces  202   d  of the bent portion  202   b  that are exposed at the top surface  204   b  of the first sealing resin layer  204  are electrically connected to the conductive paste  209   h . As a result, the semiconductor sensor chip  205 , the amplifier  206 , and the wires  207  that are inside the first space  212  are enclosed within a magnetic shield formed by the conductive paste  209   h , the connecting leads  202 , and a stage portion  201 . 
     The second sealing resin layer  210  is provided within a range extending from the top surface  204   b  of the first sealing resin layer  204  to a top end of the aperture portion  209   i  that is provided in the top wall  209   a , and is formed so as to be adhered to the top surface  204   b  of the first sealing resin layer  204  while covering the outer surface  209   d  of the lid body  209 , and thereby seal the top surface  204   b  of the first sealing resin layer  204 . Moreover, a top surface  210   a  of the second sealing resin layer  210  (i.e., a top surface of the semiconductor device  200 A) is formed so as to be parallel with the bottom surface  204   a  of the first sealing resin layer  204  (i.e., the bottom surface of the semiconductor device  200 A), and the distal ends of the supporting components  209   e  of the lid body  209  are located on the same plane as the top surface  210   a  of the second sealing resin layer  210 . 
     Next, a method of manufacturing the semiconductor device  200 A that has the above described structure will be described. 
     This semiconductor device  200 A is manufactured using a lead frame  220 . Firstly, as is shown in  FIG. 24  through  FIG. 25 , a lead frame  220  is prepared that is provided with a rectangular frame portion  221  which forms an outer circumferential rectangular frame, the above-described plurality of leads  203  that protrude inwards from the respective outer circumferential sides of this rectangular frame portion  221 , the above-described connecting leads  202  that extend inwards from corner portions of the rectangular frame portion  221 , and the above-described stage portion  201  that is connected to and supported by these connecting leads  202 . In this lead frame  220 , a frame portion  222  is formed by combining the rectangular frame portion  221 , the leads  203 , and the connecting leads  202 . 
     The lead frame  220  that is constructed in this manner is formed by performing a pressing process or an etching process or by performing both processes on a thin metal plate. In the present embodiment, the suspended portions  201   d  of the stage portion  201 , the folded portions  203   b  of the leads  203 , and the bent portions  202   b  of the connecting leads  202  are also formed at this stage. In addition to these, the through hole  201   c  of the stage portion  201  is also formed at this stage. Note that it is not essential that the suspended portions  201   d , the folded portions  203   b , the bent portions  202   b , and the through hole  201   c  be formed at the same time, and is also possible for particularly the through hole  201   c  to be formed using different process from a pressing process or an etching process. 
     At the stage when the above-described lead frame  220  has been prepared, as is shown in  FIG. 24  and  FIG. 26 , portions of the frame portion  222  excluding the rectangular frame portion  221 , the leads  203 , and a portion of the connecting leads  202  are sandwiched between a pair of first molds  200 E and  200 F and these molds are then fastened. Here, of this pair of first molds  200 E and  200 F, an inner surface  200 E 1  of the one mold  200 E that is placed on the top surface side of the lead frame  220  has a surface that abuts against the top surface  201   a  of the stage portion  201  and against the top surface  203   e  which is on the distal end  203   a  side of the folded portion  203   b  of the leads  203 , recessed surfaces that engage with the bent portions  202   b  of the connecting leads  202 , and surfaces that abut respectively against top surfaces  202   c  which are on the outer side of the bent portions  202   b  of the connecting leads  202  and against top surfaces  203   e  which are on the outer side of the folded portions  203   b  of the leads  203 . Moreover, a protruding portion  200 E 2  that is engaged with the through hole  201   c  of the stage portion  201  by being inserted therein when the molds are being fastened and whose distal end is located slightly above an inner surface  200 F 1  of the other mold  200 F is formed in the one mold  200 E. An inner surface  200 F 1  of the other mold  200 F that is located on the bottom surface side of the lead frame  220  is formed as a flat plane and, when the molds are fastened together, abuts against the bottom surfaces  201   e  of the suspended portion  201   d  of the stage portion  201 , against the bottom surface  203   d  of the portions of the leads  203  that are positioned on the outer side of the folded portion  203   b , and against the bottom surface  202   e  of the portions of the connecting leads  202  that are positioned on the outer side of the bent portions  202   b.    
     At the stage when the molds are fastened together in this manner using the pair of first molds  200 E and  200 F, the first sealing resin layer  204  is formed by injecting a first resin such as, for example, a molten epoxy resin into the cavity formed by the first molds  200 E and  200 F, thereby embedding the stage portion  201 , the leads  203 , and the connecting leads  202  inside the first resin. Note that because the stage portion  201  is connected to the connecting leads  202  and is supported in an elevated state, and because the bottom surfaces  201   e  of the suspended portions  201   d  abut against the inner surface  200 F 1  of the other mold  200 F and are accordingly firmly held, it is expected that there is no change to the stage portion  201  as a result of the injection of the first resin. 
     Next, at the stage when the first resin has hardened and the first sealing resin layer has been formed, the first molds  200 E and  200 F are removed. At this stage, a recessed portion  204   c  is created below the stage portion  201  that is connected to the through hole  201   c  and is slightly above the bottom surface  204   a  of the first sealing resin layer  204 , thereby forming a second space  208 . 
     In the present embodiment, at this stage, the lead frame  220  on which the first sealing resin layer has been formed is immersed in a plating solution of, for example, silver, gold, or palladium. At this time, by connecting the cathode of a DC power supply, for example, to the rectangular frame portion  221  that is positioned on the outer side of the first sealing resin layer  204  of the lead frame, and connecting the anode to the plating solution, and then supply DC current to the lead frame  220 , as is shown in  FIG. 23 , a plating layer  223  is formed on portions such as the top surface  203   c  on the one end  203   a  side and the bottom surface  203   d  on the other end  203   c  side of the leads  203  that are exposed from the first sealing resin layer  204 . Note that this plating layer  223  is intended to improve the wettability for soldering when the semiconductor device  200 A is packaged on a circuit board that is provided in a device such as, for example, a mobile telephone, or when the leads  203  are being connected (i.e., bonded) to the pattern of a circuit board, or when the wires  207  that electrically connect the semiconductor sensor chip  205 , the amplifier  206 , and the leads  203  are being connected (i.e., bonded). 
     Next, as is shown in  FIG. 27 , the semiconductor chip  205  and the amplifier  206  are each adhered via the non-conductive component  211  and also in parallel with each other on the top surface  201   a  of the stage portion  201 . At this time, in the semiconductor sensor chip  205 , the bottom surface  205   a  and the top surface  201   a  of the stage portion  201  are positioned facing each other, and the diaphragm  205   d  is positioned so as to be directly above and also facing the through hole  201   c  of the stage portion  201 . Furthermore, the bonding pads of the semiconductor sensor chip  205  and the amplifier  206  are joined by the wires  207  to the respective leads  203 , so that the semiconductor sensor chip  205 , the amplifier  206 , and the leads  203  are electrically connected. 
     Next, the lid body  209  is mounted on the top surface  204   b  of the first sealing resin layer  204  with the bottom surface  209   g  side of the distal end portion  209   c  of the lid body  209  placed in contact with the surface  202   d  of the bent portion  202   b  of the connecting leads  202 , and with the conductive paste  209   h  electrically connected to the connecting leads  202 . The first space  212  is thus formed with the semiconductor sensor chip  205 , the amplifier  206 , and the wires  207  covered by the lid body  209 . At this time, by positioning the surfaces  202   d  of the bent portions  202   b  such that they are in a state of protruding above the top surface  201   a  of the stage portion  201  when the id body  209  is placed in position, the lid body  209  does not come into contact with and consequently damage the semiconductor sensor chip  205 , the amplifier  206 , and the wires  207 . 
     Next, as is shown in  FIG. 28 , a pair of second molds  200 G and  200 H whose inner surfaces  200 G 1  and  200 H 1  form flat surfaces are fastened together. At this time, the one mold  200 G that is placed on the upper side is positioned such that the inner surface  200 G 1  thereof abuts against the top end of the aperture portion  209   i  of the lid body  209  and against the distal end of the supporting components  209   e , while the other mold  200 H that is placed on the lower side is positioned such that the inner surface  200 H 1  thereof is in surface contact with the bottom surface  204   a  of the first sealing resin layer  204 . At the stage when the pair of second molds  200 G and  200 H have been fastened together, a molten second resin such as, for example, an epoxy resin is injected into the resulting cavity, thereby covering the outer surface  209   d  of the lid body  209  and adhering to the first sealing resin layer  204 , and forming the second sealing resin layer  210  that seals the outer surface  209   d  of the lid body  209  and the first sealing resin layer  204 . Here, because the lid body  209  is reliably held as a result of the top end of the aperture portion  209   i  and the distal ends of the supporting components  209   e  abutting against the inner surface  200 G 1  of the one mold  200 Q the position of the lid body  209  is not shifted by the urging force that accompanies the injection of the second resin. 
     At the stage when the second resin has hardened and the pair of second molds  200 G and  200 H have been removed, lastly, the rectangular frame portion  221  of the lead frame  220  and the unnecessary leads  203  and connecting leads  202  on the outer side portion of the semiconductor device  200 A are cut off, thereby completing the process to manufacture the semiconductor device  200 A. 
     In the semiconductor device  200 A that is construct in the manner described above, sound pressure such as noise or the like that is externally generated is guided to the first space  212  through the aperture portion  209   i  of the lid body  209 , and reaches the diaphragm  205   d  of the semiconductor sensor chip  205 . In conjunction with this, the diaphragm  205   d  vibrates by a deformation amount that corresponds to the size of the sound pressure. A bridge resistive circuit treats the amount of the deformation by the diaphragm  205   d  as a change in the electrical resistance, and detects sound pressure by converting these changes in the electrical resistance into pressure. In addition, electrical signals that are output at this time from the diaphragm  205   d  are sent to the amplifier  206  and are amplified, thereby enabling the sound pressure to be detected more accurately. Furthermore, in the semiconductor device  200 A of the present embodiment, the recessed portion  204   c  can be formed with the stage portion  201  in an elevated state and the layer thickness of the first sealing resin layer increased, and the second space  208  on the bottom surface  205   a  side of the diaphragm  205   d  can be formed with a sizable volume. Because of this, in spite of the second space  208  being a sealed space, the deformation of the diaphragm  205   d  is not obstructed because of pressure changes within the space  208  that occur in conjunction with the vibration of the diaphragm  205   d , and there are no errors in the detected sound pressure. Accordingly, the diaphragm  205   d  vibrates correctly by a deformation amount that corresponds to the incoming sound pressure. 
     In contrast, electromagnetic noise that is externally generated also acts on the semiconductor device in addition to the sound pressure from a detected object. This type of noise passes through the first sealing resin layer  204  and the second sealing resin layer  210  that are provided on the semiconductor device  200 A of the present embodiment, and there is a possibility that it will reach the semiconductor sensor chip  205  and cause erroneous vibration of the diaphragm  205   d . If noise reaches the diaphragm  205   d  in this manner, then errors occur in the sound pressure detections by the semiconductor device, which results in a loss of the reliability of the semiconductor device. In contrast to this, in the semiconductor device  200 A of the present embodiment, the conductive paste  209   h  is provided on the lid body  209 , and an electromagnetic shield that is formed by this conductive paste  209   h , the connecting leads  202 , and the stage portion  201  and that surrounds the semiconductor sensor chip  205  and the like inside the first space  212  is provided in the semiconductor device  200 A. Because of this, noise that passes through the first sealing resin layer  204  and the second sealing resin layer  210  can be blocked by the electromagnetic shield, and this noise is unable to reach the semiconductor sensor chip  205  located within the first space  212 . As a result, in the semiconductor device  200 A of the present embodiment, there is no erroneous operation of the diaphragm  205   d  that is caused by the effects of noise. 
     Accordingly, in the above-described semiconductor device  200 A and method of manufacturing the semiconductor device  200 A, sound pressure such as noise and the like is allowed to reach the diaphragm  205   d  of the semiconductor sensor chip  205  via the aperture portion  209   i  of the lid body  209  and through the first space  212 , and the diaphragm  205   d  is able to be vibrated using the second space  208  which is formed by the through hole  201   c  and the recessed portion  204   c . At this time, the volume of the second space  208  which is in a sealed state can be easily increased by changing the size of the protruding portion  200 E 2  of the first mold  200 E. As a result, when the diaphragm  205   d  is vibrating in response to incoming sound pressure, it is possible to suppress to a minimum pressure changes in the second space  208  that occur in conjunction with these vibrations. Accordingly, the diaphragm  205   d  can be made to vibrate correctly without being affected by these pressure changes, and the sound pressure can be accurately and precisely detected. 
     Moreover the semiconductor device  200 A of the present embodiment is manufactured using the lead frame  220 , and it is possible to form a circuit board on which the semiconductor chip  205  is packaged using a comparatively simple manufacturing method such as performing a pressing process or an etching process on a thin metal plate. Because of this, in comparison with when a printed circuit board is used as in the conventional method, this method can be applied for mass production and it is possible to reduce the costs of manufacturing the semiconductor device  200 A and, consequently, reduce the cost of the semiconductor device  200 A itself. Moreover, by using the lead frame  220  in the manufacturing, resin sealing technology can be applied. Because the semiconductor device  200 A is sealed by the first sealing resin layer  204  and the second sealing resin layer  210 , it is provided with a high level of durability and excellent reliability. 
     Moreover, when the pair of first molds  200 E and  200 F are fastened together and the first resin is injected into the cavity, the stage portion  201  can be held firmly due to the suspended portion  201   d  being provided on the stage portion  201 , and it is possible to prevent the stage portion  201  being shifted by the urging force that accompanies the injection of the first resin. Furthermore, as a result of the supporting component  209   e  being provided on the lid body  209 , it is possible to fasten the pair of second molds  200 G and  200 H and reliably prevent the lid body  209  being shifted when the second resin is injected into the cavity. 
     Moreover, as a result of the bent portions  202   b  being provided on the connecting leads  202 , and these bent portions  202   b  being formed such that the surfaces  202   d  are positioned above the top surface  201   a  of the stage portion  201 , when the lid body  209  is placed in position, it is possible to prevent the lid body  209  coming into contact with and consequently damaging the semiconductor sensor chip  205 , the amplifier  206 , and the wires  207 . 
     Furthermore, as a result of the conductive paste  209   h  being provided on the lid body  209 , it is possible to equip the semiconductor device  200 A with an electromagnetic shield, and to accordingly prevent any erroneous vibration of the diaphragm  205   d  that is caused by noise. As a result, a semiconductor device  200 A that has accurate noise pressure detection can be provided. 
     Note that the present invention is not limited to the above described embodiments and various modifications may be made thereto insofar as they do not depart from the spirit or scope of the present invention. For example, in the present embodiment a description is given of when the suspended portion  201   d  is provided below the stage portion  201  and this suspended portion  201   d  makes it possible to prevent the stage portion  201  being shifted when the first resin is injected. However, because the stage portion  201  is supported by the connecting leads  202  and, during the first resin injection, the protruding portion  200 E 2  of the mold  200 E is inserted into the through hole  201   c  and held therein, it is also possible, as is shown in  FIG. 29 , for the suspended portion  201   d  to not be provided. Moreover, in the present embodiment, the conductive paste  209   h  is provided on the lid body  209 , however, when, for example, the lid body  209  is formed from a conductive material such as metal, the lid body  209  by itself provides an electromagnetic shield effect. Therefore, it is not essential for the conductive paste  209   h  to be provided. Furthermore, it is not necessary for this type of conductive material to be limited to a paste material. 
     Furthermore, in the present embodiment, the bent portions  202   b  are provided on the connecting leads  202 , and the lid body  209  is positioned so as to abut against the surfaces  202   d , which consequently prevents the lid body  209  coming into contact with the semiconductor sensor chip  205  and the wires  207  and the like when the lid body  209  is being installed. However, if the lid body  209  is formed large enough in advance so that it does not come into contact with the semiconductor sensor chip  205  and the wires  207  and the like during installation, then it is not necessary to provide the bent portions  202   b  on the connecting leads  202 . 
     Moreover, when forming the first sealing resin layer  204 , as is shown in  FIG. 30 , it is also possible to provide the first sealing resin layer  204  on the outer side of the bent portions  202   b . If this type of structure is employed, there is no possibility that the distal end portions  209   c  of the lid body  209  will slide off the surfaces  202   d  of the bent portions  202   b  when the lid body  209  is being installed. If the height of the first sealing resin layer  204  on the outer side of the bent portions  202   b  is made higher than the height of the surfaces  202   d , then the lid body  209  can be installed with even greater stability. 
     Moreover, in the present embodiment, at the stage when the first sealing resin layer  204  was formed, the plating layer  223  was formed by immersing the lead frame  220  in a plating solution, however, it is also possible to form the plating layer  223  over the entire surface of the lead frame  220  by immersing the lead frame  220  in the plating solution at the stage when the working of the lead frame  220  has been completed but the first sealing resin layer  204  has not yet been formed. If the plating layer  223  is formed on the entire surface of the lead frame  220  in this manner, then, for example, a palladium plating may be used. If the plating layer  223  is formed in spots such as on the top surface  203   e  and the bottom surface  203   d  of the leads  203  that are exposed from the first sealing resin layer  204 , as in the present embodiment, then, in addition to a gold plating or silver plating, a bismuth plating may also be used. 
     Moreover, in the present embodiment, the semiconductor sensor chip  205  and the amplifier  206  are provided on the semiconductor device  200 A, and are also installed on the stage portion  201 , however, it is also possible to detect sound pressure using only, for example, the semiconductor sensor chip  205 , and to further amplify electrical signals output from the semiconductor sensor chip  205  using an amplifier  206  that is provided separately from the semiconductor device  200 A. 
     Furthermore, the semiconductor sensor chip  205  is fixed to the top surface  201   a  of the stage portion  201  with the bottom surface  205   a  thereof facing this top surface  201   a , however, it is also possible for the semiconductor sensor chip  205  to be installed with the top surface  205   b  of the semiconductor sensor chip  205  facing the top surface  201   a  of the stage portion  201 . 
     Moreover, in the present embodiment, an example is shown in which the aperture portion  209   i  of the lid body  209  is formed directly above the diaphragm  205   d  of the semiconductor sensor chip  205 , however, provided that the aperture portion  209   i  allows the first space  212  to be connected to the outside, it is not necessary that it be limited to this placement position. For example, if the aperture portion  209   i  is offset in a horizontal direction from above the diaphragm  205   d , then not only is there no deterioration in the pressure detection accuracy, but also, conversely, if moisture and the like enters into the first space  212  through the aperture portion  109   i , this moisture and the like can be prevented from coming into direct contact with the diaphragm  205   d  so that the pressure detection accuracy can be maintained or even improved. 
     Furthermore, in the present embodiment, a description is given of when the supporting components  209   e  are provided on the lid body  209 , and by abutting the distal ends of the supporting components  209   e  against the inner surface  200 G 1  of the one mold  200 Q the lid body  209  is prevented from being shifted by the urging force that accompanies the injection of the second resin. However, because the lid body  209  is also held by the inner surface  200 G 1  of the mold  200 G abutting against the top end of the aperture portion  209   i  during the injection of the second resin, it is not essential for the supporting components  209   e  to be formed. 
     Next, a semiconductor device and a method of manufacturing this semiconductor device according to a seventh embodiment of the present invention will be described with reference made to  FIG. 31  through  FIG. 34 . In the description of the present embodiment, structure that is the same as that of the sixth embodiment is given the same symbol and a detailed description thereof is omitted. 
     In contrast to the semiconductor device  200 A that was described in the sixth embodiment, as is shown in  FIG. 31 , in a semiconductor device  200 B of the present embodiment the aperture portion  209   i  that connects the first space  212  with the outside is not formed in the top wall  209   a  of the lid body  209 , and the first space  212  is in a sealed state. 
     In contrast to this, a hole portion  204   d  that communicates with the through hole  201   c  in the stage portion  201  and opens onto the bottom surface  204   a  of the first sealing resin layer  204  is provided in the first sealing resin layer  204 . Here, when seen in cross-sectional view, the width of the hole portion  204   d  of the present embodiment is formed larger than the width of the through hole  201   c , and the second space  208  is formed by combining the through hole  201   c  and the hole portion  204   d.    
     Next, a method of manufacturing the semiconductor device  200 B having the above described structure will be described. 
     This semiconductor device  200 B is manufactured using the lead frame  220  in the same way as in the sixth embodiment. At the stage when the lead frame  220  has been prepared, as is shown in  FIG. 24  and  FIG. 32 , portions of the frame portion  222  excluding the rectangular frame portion  221 , the leads  203 , and a portion of the connecting leads  202  are sandwiched between a pair of first molds  200 M and  200 N and these molds are then fastened. Here, in the present embodiment, of this pair of first molds  200 M and  200 N, a protruding portion  200 N 2  is provided on an inner surface  200 N 1  side of the other mold  200 N that is placed on the bottom surface side of the lead frame  220 , and the through hole  201   c  is closed off when a convex portion  200 N 3  at the distal end portion of this protruding portion  200 N 2  is engaged in the through hole  201   c  of the stage portion  201  when the molds are fastened together. In contrast, an inner surface  200 M 1  of the one mold  200 M that is placed on the top surface side of the lead frame  220  has a surface that abuts against the top surface  201   a  of the stage portion  201  and against the top surface  203   c  which is on the distal end side of the folded portion  203   b  of the leads  203 , recessed surfaces that engage with the bent portions  202   b  of the connecting leads  202 , and surfaces that abut respectively against top surfaces  202   c  which are on the outer side of the bent portions  202   b  of the connecting leads  202  and against top surfaces  203   e  which are on the outer side of the folded portions  203   b  of the leads  203 . 
     At the stage when the pair of first molds  200 M and  200 NF are fastened together in this manner, the first sealing resin layer  204  is formed by injecting a molten first resin into the cavity formed by the first molds  200 M and  200 N. Next, at the stage when the first resin has hardened and the first molds  200 M and  200 N have been removed, a hole portion  204   d  is formed below the stage portion  201  that is connected to the through hole  201   c  and opens at the bottom surface  204   a  of the first sealing resin layer  204 , thereby forming a second space  208  of the present embodiment that is connected to the outside. 
     Next, as is shown in  FIG. 33 , in the same way as in the sixth embodiment, at the stage when the semiconductor sensor chip  205  and the amplifier  206  are adhered to the top surface  201   a  of the stage portion  201  and the wires  207  have been connected, the lid body  209  is placed in position with the distal end portions  209   c  abutting against the surfaces  202   d  of the bent portions  202   b , thereby forming a sealed first space  212 . Next, as is shown in  FIG. 34 , a pair of second molds  200 O and  200 P are fastened together, and a second sealing resin layer  210  is formed so as to seal the first sealing resin layer and the lid body  209 . At this time, an inner surface  200 O 1  of the one mold  200 O is placed against the distal ends of the supporting components  209   e  so that the lid body  209  is firmly held, and the inner surface  200 P 1  of the other mold  200 P is placed against the bottom surface  204   a  of the first sealing resin layer  204  thereby fastening the molds together. As a result, it is possible to prevent the lid body  209  from being shifted by the urging force that accompanies the injection of the second resin. Lastly, at the stage when the second sealing resin layer  210  has been formed, portions of the lead frame  220  that are positioned outside the first sealing resin layer  204  and the second sealing resin layer  210  are cut off, thereby completing the process to manufacture the semiconductor device  200 B. 
     In the semiconductor device  200 B of the present embodiment that is constructed in this manner, pressure from the outside is able to reach the diaphragm  205   d  of the semiconductor sensor chip  205  via the second space  208 . In addition, the diaphragm  205   d  is able to vibrate due to the sealed first space  212  being formed. At this time, because it is possible to easily alter the volume of the first space  212  by changing the size and shape of the lid body  209 , it is also possible to easily keep to a minimum the pressure changes that accompany the vibrations of the diaphragm  205   d , and the diaphragm  205   d  can be made to vibrate correctly. 
     Note that the present invention is not limited to the above described seventh embodiment and various modifications may be made thereto insofar as they do not depart from the spirit or scope of the present invention. For example, in the present embodiment the width of the hole portion  204   d  is formed larger than the width of the through hole  201   c  when seen in cross-sectional view, however, it may also be formed having substantially the same width as that of the through hole  201   c . In this case, for example, by forming the protruding portion  200 E 2  that is formed on the one mold  200 E of the pair of first molds  200 E and  200 F that are described in the sixth embodiment at a length that enables it to abut against the inner surface  200 F 1  of the other mold  200 F when the molds are being fastened together, it is also possible to form a hole portion  204   d  that opens onto the bottom surface  204   a  of the first sealing resin layer  204  and that has substantially the same width as that of the through hole  1   c.    
       FIG. 35  through  FIG. 40  show an eighth embodiment of the present invention. As is shown in  FIG. 35 , a semiconductor device  301  is provided with a circuit board  303 , a semiconductor chip  305  that is placed on one end side in the thickness direction of the circuit board  303 , a lid frame  307 , and a resin mold portion  309 . 
     The semiconductor chip  305  is formed substantially in a plate shape, and one end surface in the thickness direction thereof  305   a  is adhesively fixed onto a front surface  303   a  that is positioned on the one end side of the circuit board  303 . This semiconductor chip  305  is formed, for example, by an acceleration sensor that has the function of detecting acceleration. 
     Namely, as is shown in  FIG. 36 , a through hole  305   b  is formed in the semiconductor chip  305  that penetrates in the thickness direction thereof. A weight  311  is provided within this through hole  305   b , and one end of this weight  311  is integrally fixed to an inner surface of the through hole  305   b  by a flexible portion  313 . The flexible portion  313  is formed so as to be thinner than the thickness dimension of the semiconductor chip  305 , and the flexible portion  313  is able to flex when acceleration is applied to the weight  311 . A piezoelectric element  314  that converts the acceleration into electrical signals based on the flexing of the flexible portion  313  is adhered to the flexible portion  313 . 
     Moreover, a plurality of pad electrodes  315  are formed so as to be exposed on another end surface  305   c  in the thickness direction of the semiconductor chip  305 . These pad electrodes  315  have a role of supplying power to the semiconductor chip  305 , and also function as terminals to transmit to the outside electrical signals that are fetched from the piezoelectric element  314 . 
     As is shown in  FIG. 35 , the lid frame  307  is formed from a heat resistant thermosetting resin, and is provided with a lid body  317  that is placed on the front surface  303   a  of the circuit board  303  so as to cover the semiconductor chip  305 , and protruding portions  319  that protrude from the lid body  317  while being formed integrally therewith. 
     The lid body  317  is provided with a substantially plate-shaped top wall (i.e., top end portion)  321  that is placed in a position which is separated in the thickness direction from the front surface  303   a  of the circuit board  303 , and side walls  323  that protrude from peripheral edges of the top wall  321  towards the front surface  303   a  of the circuit board  303 . Namely, the lid body  317  is formed by the top wall  321  and the side walls  323  substantially in a hollowed-out shape that opens onto distal end portions  323   a  side of the side walls  323 . In a state in which the distal end portions  323   a  of the side walls  323  are placed on the front surface  303   a  of the circuit board  303  that is positioned on the peripheral edges on the semiconductor chip  305 , a hollow space portion  325  is created by the front surface  303   a  of the circuit board  303  and by inner surfaces  321   a  and  323   c  of the top wall  321  and side walls  323 . Note that in this state, of the lid body  317 , the top wall  321  is positioned the furthest away from the front surface  303   a  of the circuit board  303 , and the inner surfaces  321   a  and  323   c  of the top wall  321  and side walls  323  are positioned such that they do not come into contact with the semiconductor chip  305 . 
     Moreover, a thin film-shaped shield portion  327  that is formed on the inner surfaces  321   a  and  323   c  of the top wall  321  and side walls  323  facing the space portion  325  is provided on this lid frame  307 . This shield portion  327  is formed by coating or blowing a conductive paste which has conductivity such as copper or silver or the like over the inner surfaces  321   a  and  323   c  of the top wall  321  and side walls  323 . Namely, conductivity is imparted to the lid body  317  by this shield portion  327 . The shield portion  327  is formed so as to extend as far as distal end portions  323   a  of the side walls  323 . When the lid frame  307  has been placed in position, the shield portion  327  is in contact with the front surface  303   a  of the circuit board  303 , and the space portion  325  is covered by this shield portion  327 . 
     The protruding portions  319  extend as a pair from peripheral edges of the top wall  321 , and extend in a direction in which they move further away from the front surface  303   a  of the circuit board  303  past the top wall  321 . Moreover, each protruding portion  319  extends diagonally relative to the longitudinal direction of the top wall  321 , and is also able to be elastically deformed relative to the lid body  317 . Namely, each protruding portion  319  is elastically deformed by oscillating and flexing relative to the lid body  317  taking a base end portion  319   a  thereof as an axis. 
     In addition, a pair of joining portions  329  that extend integrally from peripheral edges of the top walls  321  in the longitudinal direction of the top walls  21  are formed in the lid frame  307 . 
     On the circuit board  303  there are provided a plurality of pad electrodes  331  that are formed in a substantially plate shape and are placed on the front surface  303   a , a plurality of solder balls (i.e., electrode portions)  333  that are placed on the rear surface  303   b  that is located on the other end side in the thickness direction of the circuit board  303 , and wiring portions  335  that are placed inside the circuit board  303  and that electrically connect each of the plurality of pad electrodes  331  and solder balls  333 . These wiring portions  335  are formed, for example, from copper foil. 
     The pad electrodes  331  are electrically connected by wires  337  to the pad electrodes  315  of the semiconductor chip  305 . The pad electrodes  331  are positioned around the periphery of the area where the semiconductor chip  305  is placed and are exposed to the space portion  325 . These pad electrodes  331  are formed, for example, by plating copper foil with nickel (Ni) having a thickness of 3 to 5 μm and gold (Au) having a thickness of 0.5 μm. 
     The solder balls  333  are formed substantially in a spherical shape, and protrude from the rear surface  303   b  of the circuit board  303 , and are also placed at a position where they do not overlap in the thickness direction of the circuit board  303  with the space portion  325 . 
     A shield component  339  that has conductivity and takes the form of a thin film is provided on the front surface  303   a  of the circuit board  303 . Of the front surface of the circuit board  303 , this shield component  339  is formed on areas facing the space portion  325 , the area where the semiconductor chip  305  is placed, and the areas where the distal end portions  323   a  of the side walls  323  of the lid body  317  are placed. Namely, in a state in which the lid frame  307  has been placed on the front surface  303   a  of the circuit board  303 , this shield component  339  is in contact with the shield portion  327  of the lid frame  307 . Accordingly, the shield component  339  encloses the space portion  325  including the semiconductor chip  305  as well as the shield portion  327  of the lid frame  307 . 
     Note that as a result of the above, the above described semiconductor chip  305  is fixed to the front surface  303   a  of the circuit board  303  via this shielding component  339 , and the distal end portions  323   a  of the side walls  323  of the lid frame  307  are also placed on the front surface  303   a  of the circuit board  303  via this shield component  339 . However, holes  339   a  are formed in this shield component  339  avoiding the respective pad electrodes  331  in order that the pad electrodes  331  of the circuit board  303  are exposed to the space portion  325 , so that the shield component  339  and the pad electrodes  331  are electrically insulated from each other. 
     The resin mold portion  309  is in contact with the front surface  303   a  of the circuit board  303  and also with outer surfaces  321   b  and  323   b  of the lid body  317  that are located on the opposite side from the inner surfaces  321   a  and  323   c . In addition, the resin mold portion  309  surrounds the joining portions  329  and the protruding portions  319  of the lid frame  307 , and fixes the circuit board  303  and the lid frame  307  in a single integral unit. 
     Note that distal end portions  319   b  and  329   a  of the protruding portions  319  and the connecting portions  329  that protrude from the lid body  317  are exposed to the outside respectively at a surface  309   a  of the resin mold portion  309  that faces in the same direction as the circuit board  303   a , and at side surfaces  309   b  that are adjacent to the surface  309   a.    
     Namely, the resin mold portion  309  is constructed so as to cover the semiconductor chip  305  via the hollow space portion  325  that is formed by the lid body  317 . Note that in  FIG. 35 , the resin mold portion  309  is depicted as being separated by the protruding portions  319  and the joining portions  329 , however, in actual fact, the protruding portions  319  and the joining portions  329  are surrounded by a single resin mold portion  309 , and the resin mold portion  309  is formed as a single unit. 
     Next, a method of manufacturing the semiconductor device  301  which is constructed in the above described manner will be described. 
     Note that in this manufacturing method, a single circuit board  303  on which are formed a plurality of units made up of a plurality of pad electrodes  331  that are used to construct the semiconductor device  301 , wiring portions  335 , and a shield component  339  is prepared in advance. 
     In addition, the semiconductor chips  305  are each adhered to the front surface  303   a  of the circuit board  303  via the respective shield components  339 . This adhering of the semiconductor chips  305  is performed by placing the semiconductor chips  305  on the front surface  303   a  of the circuit board  303  via a silver paste, and then curing this silver paste. After this adhering has ended, plasma cleaning is performed in order to remove any contamination adhering to the surfaces  303   a  and  305   c  of the circuit board  303  and semiconductor chips  305 , and particularly to the pad electrodes  315  and  331 . After this, the wires  337  are placed in position by wire bonding and the pad electrodes  315  and  331  of the semiconductor chips  305  and the circuit board  303  are mutually electrically connected. 
     Thereafter, as is shown in  FIG. 37 , a plurality of lid frames  307  that are integrally joined by the joining portions  329  are prepared (frame preparation step). In this frame preparation step, a plurality of lid frames  307  that are joined together are formed by an injection molding method using heat resistant thermosetting resin. 
     Next, the plurality of lid frames  307  are stacked on the front surface  303   a  of the circuit board  303  so that the respective semiconductor chips  305  are covered by the respective lid bodies  317  (frame placement step). Here, because the respective joining portions  329  are set such that the respective lid frames  307  are placed in predetermined positions covering the respective semiconductor chips  305 , the positioning of the respective lid frames  307  relative to the plurality of semiconductor chips  305  can be performed easily. 
     A mold  300 E having a flat surface  300 E 1  is then placed on the rear surface  303   b  side of the circuit board  303 , and a mold (i.e., one mold)  300 F having a recessed portion  300 F 2  that has been hollowed out from a surface  300 F 1  is placed opposite this mold  300 E on the front surface  303   a  side of the circuit board  303 . Namely, the pair of molds  300 E and  300 F are constructed so as to sandwich the circuit board  303  in the thickness direction thereof. Projecting portions  300 F 4  that have a substantially V-shaped cross section are formed protruding from a bottom surface  300 F 3  of the recessed portion  300 F 2  of the mold  300 F, and the respective projecting portions  300 F 4  are placed so as to be superimposed in the thickness direction on intermediate points between mutually adjacent semiconductor chips  305  and lid frames  307 . 
     At the same time as this pair of molds  300 E and  300 F are placed in position, a sheet  300 S in the shape of a thin film that is able to be peeled off easily from the mold  300 F and from the resin which forms the resin mold portion is placed between the circuit board  303  and lid frame  307  and the mold  300 F. This sheet  300 S is formed, for example, from fluorine resin. 
     Thereafter, the mold  300 F is moved in a direction towards the mold  300 E and, as is shown in  FIG. 38 , the circuit board  303  is sandwiched between the flat surface  300 E 1  and the surface  300 F 1  of the pair of molds  300 E and  300 F, and the protruding portions  319  are pressed towards the circuit board  303  by the bottom surface  300 F 3  of the recessed portion  300 F 2  of the mold  300 F (pressing step). Prior to this pressing step, the sheet  300 S is stuck using a vacuum (i.e., the arrows a) to the bottom surface  300 F 3  of the mold  300 F. 
     Accordingly, in a state in which this pressing step has been performed, the rear surface  303   b  of the circuit board  303  is in contact with the flat surface  300 E 1  of the mold  300 E, and the front surface  303   a  of the circuit board  303  is in contact via the sheet  300 S with the surface  300 F 1  of the mold  300 F. Moreover, the distal end portions  319   b  of the protruding portions  319  of the lid frame  307  abut against the bottom surface  300 F 3  of the mold  300 F. Furthermore because the protruding portions  319  extend from the lid body  317  in a direction in which they move further away from the circuit board  303 , a gap is formed between the mold  300 F and the lid body  317 . 
     In this pressing step, because the distal end portions  323   a  of the lid body  317  that is in contact with the circuit board  303  via the protruding portions  319  are pressing against the circuit board  303 , the gap between the distal end portions  323   a  of the lid body  317  and the circuit board  303  can be sealed off. Namely, the space  325  is sealed off from the outside. 
     Moreover, during this pressing step, because the lid frame  307  is pressed by the pair of molds  300 E and  300 F onto the circuit board  303 , the relative positions of the lid frame  307  and the circuit board  303  are fixed. 
     Furthermore, in this pressing step, the protruding portions  319  are elastically deformed relative to the lid body  317 . Namely, the force with which the lid body  317  is pressed onto the circuit board  303  by the mold  300 F can be absorbed by the elastic deformation of the protruding portions  319 . Because of this, due to the elastic deformation of the protruding portions  319 , it is possible to prevent the force with which the lid frame  307  is pressed against the circuit board  303  by the mold  300 F being excessively transmitted to the lid body  317 , and it is possible to prevent the lid body  317  becoming deformed. 
     Moreover, because the distal end portions  323   a  of the lid body  317  is pressed by a moderate force onto the circuit board  303  due to the elastic force of the protruding portions  319 , the gap between the distal end portions  323   a  of the lid body  317  and the circuit board  303  can be reliably closed off. 
     Thereafter, in a state in which the protruding portions  319  are pressed by the flat surface  300 F 1  of the mold  300 F, a thermosetting resin such as an epoxy resin is poured in a molten state into a single gap that is formed by the recessed portion  300 F 2  of the mold  300 F, the circuit board  303 , and the plurality of lid bodies  317  so as to form a resin mold portion  309  in which the circuit board  303  and the plurality of lid frames  307  are fixed as a single integral unit (molding step). Note that the aforementioned gap refers to a resin forming space that is used to form the resin mold portion  309 . Moreover, this resin mold portion  309  is formed by a transfer molding method in which molten resin is poured sequentially from an end portion of a single large resin forming space. 
     In this molding step, because the gap between the distal end portions  323   a  of the lid body  317  and the circuit board  303  is sealed off by the pressing force of the protruding portion  319 , it is possible to prevent the molten resin that is poured into the resin forming space entering into the space portion  325 . Moreover, in this molding step, because the relative positions of the lid frame  307  and the circuit board  303  are already fixed, it is possible to prevent the lid frame  307  being moved relative to the circuit board  303  by the molten resin that is poured into the resin forming space. 
     Note that, in this molding step, after the resin forming space has been filled by the molten resin, the resin mold portion  309  is formed by then hardening the resin using heat, as is shown in  FIG. 39 . V-shaped grooves  341  are formed by the above-described projecting portions  300 F 4  of the mold  300 F in the surface  309   a  of this resin mold portion  309 . 
     After this molding step, a dicing tape  300 D is adhered onto the entire rear surface  303   b  of the circuit board  303 . In this state, a dicing step is performed in which a blade  300 B is used to cut along the V-shaped grooves  341  to form the individual semiconductor devices  301 . At this time, the resin mold portion  309 , the circuit board  303 , and the joining portions  329  are cut, however, the dicing tape D is not cut. 
     Finally, the individual semiconductor devices  301  are removed from the dicing tape  300 D and, as is shown in  FIG. 35 , the manufacturing of the semiconductor devices  301  is ended when the solder balls  333  are mounted on the wiring portions  335  that are exposed on the rear surfaced  303   b  of the circuit board  303 . 
     When a semiconductor device  301  is mounted on a package board, as is shown in  FIG. 40 , the rear surface  303   b  of the circuit board  303  is positioned facing a surface  345   a  of a package board  345 , and the solder balls  333  are placed on land portions  347  that are formed on the surface  345   a  of the package board  345 . By then pressing the semiconductor device  301  against the surface  345   a  of the package board  345  while applying heat to the solder balls  333 , the solder balls  333  are fixed to the land portions  347  and are also electrically connected thereto. 
     In this state, because the space portion  325  expands and contracts when the semiconductor device  301  is heated and cooled, the portion of the circuit board  303  that overlaps in the thickness direction with the space portion  325  bends. 
     Here, because the solder balls  333  are placed in a position where they do not overlap in the thickness direction with the space portion  325 , it is possible to control changes in the position of the solder balls  333  relative to the package board  345  based on the bending of the circuit board  303 . Moreover, because the solder balls  333  are provided so as to protrude from the rear surface  303   b  of the circuit board  303 , even if the space portion  325  does expand, it is still possible to prevent the circuit board  303  coming into contact with the surface  345   a  of the package board  345 . Accordingly, it is possible to prevent the solder balls  333  peeling away from the land portions  347  of the package board  345 . 
     According to the above described semiconductor device  301 , the method of manufacturing the semiconductor device, and the lid frame  307  that is used therein, simply by sandwiching the circuit board  303  and the lid frame  307  between the pair of molds  300 E and  300 F it is possible to prevent molten resin flowing into the space portion  325  when the resin mold portion  309  is being formed, and it is possible to prevent the lid frame  307  moving relative to the circuit board  303 . Accordingly, it is no longer necessary to perform a step to adhere the lid frame  307  which covers the semiconductor chip  305  to the circuit board  303 , or to perform a step of forming a recessed portion or supporting portion in the circuit board  303  in order to support the distal end portions  323   a  of the lid body  317 , and it is possible to reduce costs when manufacturing a semiconductor device  301  and achieve an improvement in the manufacturing efficiency. 
     Moreover, because the shield portion  327  of the conductive lid frame  317  and the shielding component  39  of the circuit board  303  surround the semiconductor chip  305 , even if electrical noise that is generated on the exterior side of the semiconductor device  301  intrudes into the circuit board  303  and resin mold portion  309 , in the lid frame  317  and the shielding component  339  the noise is prevented from intruding into the space portion  325 . Accordingly, this noise is reliably prevented from reaching the semiconductor chip  305 , and any erroneous operation of the semiconductor chip  305  that is caused by such noise can be reliably prevented. 
     Furthermore, because the force with which the lid frame  307  is pressed in the pressing step against the circuit board  303  by the mold  300 F which has the recessed portion  300 F 2  is prevented from being transmitted in excess to the lid body  317  by the elastic deformation of the protruding portions  319  so that the lid body  317  is prevented from becoming deformed, it is possible to prevent any irregularity in the space portion  325  that is caused by deformation of the lid body  317 . 
     Moreover, because the distal end portion  323   a  of the lid body  317  is pressed by a moderate force onto the circuit board  303  due to the elastic force of the protruding portions  319 , the gap between the distal end portion  323   a  of the lid body  317  and the circuit board  303  can be reliably sealed off. 
     Furthermore, because the semiconductor device  301  has what is known as a surface package type of structure in which the solder balls  333  are only placed on the rear surface side of the circuit board which faces the package board  345 , the package area of the semiconductor device  301  on the package board  345  is limited to the surface area of the rear surface  303   b  of the circuit board  303 . Accordingly, it is possible to reduce the mounting area of the semiconductor device  301  on the package board  345 , and achieve a reduction in the size of the package board  345 . 
     Moreover, because it is possible to restrict changes the position of electrode portions relative to the package board  345  based on bending of the circuit board  303  due to the expansion and contraction of the space portion  345 , it is possible to prevent the solder balls  333  peeling away from the package board  345 , and to secure an electrical connection between the semiconductor chip  305  and the package board  345 . 
     Furthermore, when manufacturing a plurality of semiconductor devices  301 , by joining together a plurality of the lid frames  307  using the joining portions  329 , the positioning of the respective lid frames  307  on the respective semiconductor chips  305  that have been placed on the circuit board  303  can be performed easily. Moreover, it becomes possible to easily manufacture a plurality of semiconductor devices  301  simultaneously, and it is possible to achieve an improvement in the manufacturing efficiency of the semiconductor devices  301 . 
     Moreover, in the pressing step because the protruding portions  319  of the lid frame  307  are abutted against the bottom surface  300 F 3  of the mold  300 F via the sheet S, it is possible to prevent the mold  300 F becoming damaged by the contact with the protruding portions  319 . Moreover, because the molding step is performed with the sheet  300 S placed on the bottom surface  300 F 3  of the mold it is possible to prevent the mold  300 F becoming contaminated by molten resin. 
     Note that in the above described embodiment, the shield component  339  is placed on the front surface  303   a  of the circuit board  303 , however, the present invention is not limited to this and it is also possible for the shield component  339  to be formed so as to surround the space portion  325  including at least the lid body  317  and the semiconductor chip  305 . Namely, it is possible for a portion of the shield component  339  to be placed inside the circuit board  303 . 
     Next, a ninth embodiment of the present invention will be described with reference made to  FIG. 41 . Note that, here, only points of variance with the eighth embodiment will be described and component elements that are the same as those of the semiconductor device  301  are given the same symbols and a description thereof is omitted. 
     As is shown in  FIG. 41 , a recessed portion  353  that has a substantially rectangular shape in cross sectional view is formed in a circuit board  304  that constitutes a semiconductor device  351  according to this embodiment by being hollowed out in the thickness direction from a front surface  304   a  of the circuit board  304 . A semiconductor chip  305  is placed on a bottom surface  353   a  of this recessed portion  353 . 
     A lid frame  307  is placed so as to extend across this recessed portion  353 . Namely, the distal end portions  323   a  of the lid body  317  are placed on the front surface  304   a  of the circuit board  304  that is positioned on a peripheral edge of the recessed portion  353 . In this state, a hollow space portion  355  is created by the recessed portion  353  of the circuit board  304  and the top wall  321  and side walls  323  of the lid frame  307 . 
     A plurality of pad electrodes  357  that are electrically connected to the pad electrodes  315  of the semiconductor chip  305  by wires  337  are placed on the bottom surface  353   a  of the recessed portion  353 . These pd electrodes  357  are electrically connected via a wiring layer  335  to the plurality of solder balls  333  that are placed on the rear surface  304   b  of the circuit substrate  304 . Note that, in the same way as in the eighth embodiment, the solder balls  333  are positioned such that they do not overlap in the thickness direction with the space portion  355 . 
     Moreover, a shield component  359  that encloses the space portion  355  including the semiconductor chip  305  as well as the shield portion  317  of the lid frame  307  is provided on the circuit board  304 . Namely, the shield component  359  is placed on the bottom surface  353   a  of the recessed portion  353 , and is provided so as to be exposed from peripheral edges of the bottom surface  353   a  right through the interior of the circuit board  304  as far as the front surface  304   a  of the circuit board  304  that is positioned on the peripheral edges of the recessed portion  353 . Accordingly, in a state in which the lid frame  307  is placed on the front surface  304   a  of the circuit board  304 , the shield component  359  is in contact with the shield portion  327  of the lid frame  307 . 
     Note that, as a result of the above, the semiconductor chip  305  is fixed to the front surface  304   a  of the circuit board  304  via this shield component  359 , and the distal end portions  323   a  of the side walls  323  of the lid frame  307  are also placed on the front surface  304   a  of the circuit board  304  via this shield component  359 . Holes  359   a  are formed in this shield component  359  avoiding the respective pad electrodes  357  in order that the pad electrodes  357  of the circuit board  304  are exposed to the space portion  355 , so that the shield component  359  and the pad electrodes  357  are electrically insulated from each other. 
     A plurality of tapered through holes  361  are formed in peripheral edges of the circuit board  304  penetrating in the thickness direction thereof such that they become narrower as they move from the rear surface  304   b  to the front surface  304   a  of the circuit board  304 . Anchor portions  363  that are formed integrally with the resin mold portions  309  via aperture portions  361   a  of the through holes  361  which are positioned on the front surface  304   a  side of the circuit board  304  are provided inside each through hole  361 . Namely, the anchor portions  363  are formed by filling the through holes  361  with the same resin material as that used for the resin mold portion  309 . Note that the anchor portions  363  form the same plane as the rear surface  304   b  of the circuit board  304 . 
     The semiconductor device  351  that is constructed in the manner described above can be manufactured using the same pair of molds  300 E and  300 F as in the eighth embodiment. Note also that the anchor portions  363  can be formed in the molding step by supplying molten resin that is used to form the resin mold portion  309  through the aperture portions  361   a  of the through holes  361 . Moreover, in the molding step, because the through holes  361  open towards the mold  300 E that has the flat surface  300 E 1 , it is preferable for the same type of sheet  300 S as was used in the eighth embodiment to be placed between the rear surface  304   b  of the circuit board  304  and the mold  300 E. 
     When the semiconductor devices  351  become heated when they are being packaged by soldering or the like on the package board  345  or when a semiconductor device  351  becomes heated as a result of the operation or the like of the semiconductor chip  305 , there is an expansion of the space portion  355 . Because of this, a force acts on the resin mold portion  309  in a direction moving away from the circuit board  304  due to this expansion. Here, because the through holes  361  that have been filled with the anchor portions  363  are formed in a tapered shape, the anchor portions  363  are unable to be pulled free by this force from the aperture portions  361   a  which have a narrowed distal end. Accordingly, it is possible to prevent the resin mold portion  309  peeling away from the circuit board  304 . 
     According to the above described semiconductor device  351 , the same effects can be achieved as those of the eighth embodiment. 
     In addition, because the semiconductor chip  305  and the pad electrodes  357  that are placed on the bottom surface  353   a  of the recessed portion  353  are electrically connected by the wires  337 , it is possible to prevent the wires  37  from protruding to the outside of the recessed portion  353 . Accordingly, when the frame placement step and the pressing step are being performed with these wires  337  having been placed in position, it is possible to reliably deform the wires  337  while preventing the wires  337  from coming into contact with the lid frame  307 . Accordingly, when manufacturing the semiconductor device  351 , it is possible to easily secure an electrical connection between the circuit board  304  and the semiconductor chip  305 . 
     Furthermore, by forming the tapered through holes  361 , and by forming the resin mold portion  309  integrally with the anchor portions  363  by means of the aperture portions  361   a  of the through holes  361  which have a narrowed distal end, it is possible to prevent the resin mold portion  309  being pulled away from the front surface  304   a  of the circuit board  304  due to the expansion of the space portion  355 . Note that the through holes  361  and the anchor portions  363  also achieve the same effects when they are included in the structure of the semiconductor device  301  of the eighth embodiment. 
     Note that, in the above described seventh and eighth embodiments, the protruding portions  319  of the lid frame  307  are elastically deformed by oscillating and flexing relative to the lid body  317 , however, the present invention is not limited to this and it is sufficient if the protruding portions  319  are able to at least be elastically deformed relative to the lid body  317 . 
     Moreover, the protruding portions  319  are provided so as to be elastically deformable relative to the lid body  317 , however, the present invention is not limited to this and it is sufficient if the protruding portions  319  protrude at least from peripheral edges of the top wall  321 . 
     Furthermore, the protruding portions  319  are made to protrude from peripheral edges of the top wall  321 , however, the present invention is not limited to this and it is sufficient if the protruding portions  319  extend in a direction in which they move further away from the front surfaces  303   a  and  304   a  of the circuit boards  303  and  304  than the top wall  321 . Namely, the protruding portions  319  may be made to protrude, for example, from a center portion of the top wall  321 , or may be made to protrude from the side walls  323 . In this structure as well, because the protruding portions  319  can be pressed by the mold  300 F, it is possible to prevent molten resin entering the space portions  325  and  355  and prevent the lid frame  307  moving relative to the circuit boards  303  and  304  when the semiconductor devices  301  and  351  are being manufactured. 
     Moreover, the shield portion  327  of the lid frame  307  is formed by coating a conductive paste over the inner surfaces  321   a  and  323   c  of the top walls  321  and side walls  323  that constitute the lid body  317 , however, the present invention is not limited to this, and it is sufficient if electrical noise is prevented from entering into the space portions  325  and  355  at least via the lid body  317 . Namely, the shield portion  327  may be formed, for example, by coating a conductive paste over the outer surfaces of the top wall  321  and the side walls  323 , or by immersion in a conductive paste. 
     Furthermore, it is also possible, for example, to form the lid frame  307  using a conductive resin, and coat a non-conductive resin on the inner surfaces  321   a  and  323   c  of the lid body  317  that face the space portions  325  and  355 . It is also possible coat both the non-conductive resin and the shield portion  327  on top of each other on these inner surfaces  321   a  and  323   c.    
     Furthermore, the lid frame  307  is formed from a heat-resistant thermosetting resin, however, it is sufficient if it is at least formed from a resin material. However, it is preferable for the lid frame  307  to be formed from a resin material that has sufficient heat resistance to prevent it from being thermally deformed when the lid frame  307  is heated in the molding step and when the semiconductor device  301  is being packaged on the package board. Specifically, it is preferable for the lid frame  307  to be formed from a resin material such as engineering plastic that is able to withstand heat up to approximately 170 to 180° C. 
     Moreover, if consideration is given to the prevention of the intrusion of electrical noise into the space portions  325  and  355 , then it is also possible to form the lid frame  307  from a conductive material such as a metal. In the case of this structure, the lid frame  307  is able to withstand higher temperatures during the molding step and during the packaging of the semiconductor device  301  on the package board. Moreover, because a conductive material has greater rigidity compared to a resin material, it is possible to prevent the top wall  321  and the side walls  323  of the lid frame  307  bending and becoming deformed in the molding step, and it is easy to secure the space portions  325  and  355 . 
     Furthermore, the lid frame  307  is not limited to being formed from the above described resin material or conductive material. For example, if it is particularly important to prevent electrostatic charges in the semiconductor chip  305 , then it is preferable for the lid frame  307  to be formed from a resin material in which carbon has been mixed. 
     When manufacturing the semiconductor devices  301  and  351 , a plurality of lid frames  307  that are joined by the joining portions  329  were placed on the front surfaces  303   a  and  304   a  of the circuit boards  303  and  304 , however, it is also possible to use individual lid frames  307  that do not have the joining portions  329 . 
     Furthermore, the resin mold portion  309  is formed from a thermosetting resin such as an epoxy resin or the like, however, in the molding step, there may be instances when the space portions  325  and  355  become filled by gas that is generated from the resin when this is heated or the like. When this gas is an odorous gas such as bromine (Br) or the like, there may be harmful effects on the semiconductor chip  305 . Accordingly, if this type of gas is considered, then it is preferable for a resin that does not include a fire-resistant compound such as a halogen compound or the like to be selected as the resin that is used to form the resin mold portion  309 , and it is particularly preferable for a resin that does not generate a gas that may cause harmful effects to the semiconductor chip  305  such as bromine and the like to be selected. 
     Furthermore, the solder balls  333  that are electrically connected to the wiring portions  35  are provided on the rear surfaces  303   b  and  304   b  of the circuit boards  303  and  304 , however, the present invention is not limited to this and it is sufficient if at least electrode portions that are to be electrically connected to the package board  345  are exposed on the rear surfaces  303   b  and  304   b  of the circuit boards  303  and  304 . Namely, it is also possible for these electrode portions to be formed integrally with the wiring portions  335 , and it is also possible for the wiring portions  335  to be made to protrude from the rear surfaces  303   b  and  304   b  of the circuit boards  303  and  304 . 
     Furthermore, the semiconductor chip  305  and the circuit boards  303  and  304  are electrically connected by the wires  337 , however, the present invention is not limited to this and it is sufficient simply for the semiconductor chip  305  and the circuit boards  303  and  304  to be electrically connected. Namely, it is also possible, for example, for the semiconductor chip  305  to be placed on the front surface  303   a  or the bottom surface  353   a  of the recessed portion  353  of the circuit boards  303  and  304  so that the pad electrodes  315 ,  331 , and  357  of the semiconductor chip  305  and the circuit boards  303  and  304  are facing each other. 
     Moreover, an acceleration sensor chip is described above as an example of the semiconductor chip  305 , however, the present invention is not limited to this and it is sufficient for the semiconductor chip  305  to at least be provided with a moving portion such as the flexible portion  313  that constitutes an acceleration sensor chip. 
     Embodiments of the present invention have been described in detail above with reference made to the drawings, however, the specific structure of the present invention is not limited to these embodiments and, insofar as they do not depart from the spirit or scope of the present invention, design modifications and the like may also be included in the present invention. 
     INDUSTRIAL APPLICABILITY 
     The present invention can be applied to a semiconductor device that is provided with a semiconductor chip such as a sound pressure sensor chip and a pressure sensor chip, and to a method of manufacturing the same, and to a lid frame that is used with the same, and makes it possible to achieve a reduction in manufacturing costs and an improvement in manufacturing efficiency when manufacturing a semiconductor device in which a semiconductor chip that is placed in a space portion is connected with an external space.