Patent Publication Number: US-2010125377-A1

Title: Apparatus to test semiconductor device and method of testing semiconductor device using the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority under 35 U.S.C. §119 from Korean Patent Application No. 10-2008-0114213, filed on Nov. 17, 2008, which is incorporated herein by reference in its entirety. 
     BACKGROUND 
     1. Field of the Invention 
     Example embodiments relate to an apparatus to test a semiconductor device and a method of testing a semiconductor device using the same. Other example embodiments relate to an apparatus to test a semiconductor device and a method of testing a semiconductor device using the same that are capable of exposing semiconductor devices to heating and cooling environments having set test temperatures to selectively perform tests. 
     2. Description of the Related Art 
     In general, after manufacture, a semiconductor module is mounted on a mother board of a computer and then passed through a semiconductor module mounting test area to be inspected for defects. The semiconductor module mounting test is a test to determine whether the semiconductor module operates normally in environments of a low temperature (about 10° C.), a normal temperature (about 25° C.), and a high temperature (about 55° C.). 
     The semiconductor module mounting test is performed in a state in which mother substrates, on which semiconductor modules are mounted, are loaded in a chamber. 
     A conventional semiconductor module mounting test apparatus includes a chamber in which a test process is performed, a heating part to heat the chamber, a cooling part to cool the chamber, and a controller to control operations of the respective components. 
     The conventional heating part and cooling part are separated from each other to provide independent environments to heat and cool the semiconductor modules. 
     Therefore, when the temperature environment test is performed on the semiconductor device using the conventional semiconductor module mounting test, the process flow may be complicated depending on the high temperature and low temperature test processes. 
     In addition, the conventional heating part includes a heater and a fan to provide hot air into the chamber. The cooling part uses a conventional coolant, which includes a compressor, a condenser, and an evaporator to provide cold air into the chamber. 
     However, when the conventional high temperature test is performed, external air, from which moisture is not removed, is introduced through the fan to be heated by the heater, and then supplied into the chamber. Therefore, power consumption may be increased due to use of the heater and the fan. 
     In addition, when the low temperature test is performed, the external air, from which moisture is not removed, is introduced through the cooler to lower the temperature, and then supplied into the chamber. 
     Therefore, condensation is generated in the chamber due to introduction of the moist air, causing inferiority of the semiconductor devices during the test. 
     Further, since the use of Freon gas, which has been widely used as the conventional coolant for coolers, i.e., cooling parts, is limited due to environmental regulations, costs due to use of novel coolants compliant with the environmental regulations are being increased. Furthermore, noises are excessively generated from a compressor during operation of the cooling part, causing problems related to the noises. 
     SUMMARY 
     Example embodiments provide an apparatus to test a semiconductor device and a method of testing a semiconductor device using the same that are capable of selectively performing heating and cooling environment tests of semiconductor devices in a single chamber. 
     Example embodiments also provide an apparatus to test a semiconductor device and a method of testing a semiconductor device using the same that are capable of recognizing a set test temperature to form a heating or cooling test environment in the chamber and test semiconductor devices. 
     Additional aspects and utilities of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept. 
     Features and/or utilities of the present general inventive concept may be realized by an apparatus to test a semiconductor device, the apparatus including a chamber having a certain space in which a plurality of semiconductor devices are disposed, a temperature conversion module connected to the chamber and configured to heat or cool the chamber to increase the temperature in the chamber to a certain level, and a control module to transmit an electrical signal to the temperature conversion module to selectively heat or cool an inner space of the chamber. 
     The chamber may be located on an upper surface of a main body or mounting apparatus. A lower part of the chamber may be exposed to the upper surface of the main body. A board may be installed on the upper surface of the main body to transmit an electrical signal from inside the chamber to the exterior, and sockets may be fixedly installed on the board to electrically connect the semiconductor devices to the board. 
     One side of the chamber may be connected to the main body by a rotary member. The rotary member may include a first hinge end on the one side of the chamber, a second hinge end connected to the main body, and a cylinder to connect the first hinge end to the second hinge end and to longitudinally expand/contract by receiving an electrical signal from the control module. 
     A gap may be formed between an upper end surface of the main body and a lower end surface of the chamber. 
     The temperature conversion module may include a hot air supplier to provide hot air heated to a certain temperature into the chamber, and a cold air supplier to provide cold air cooled to a certain temperature into the chamber. 
     In addition, the control module may include a selector configured to selectively operate any one of the hot air supplier and the cold air supplier. 
     A reference temperature value may be previously set in the control module, and the control module may operate the hot air supplier when a test temperature value is higher than the reference temperature value and operate the cold air suppler when the test temperature value is lower than the reference temperature value. 
     The hot air supplier may include a first air compressor to compress external air, a housing to receive the compressed air from the first air compressor, a suction pipe to connect the first air compressor to the housing, a heater located in the housing to receive an electrical signal from the control module to heat the compressed air to a certain temperature, and an exhaust pipe to connect the housing to the interior of the chamber to provide the heated compressed air into the chamber. The cold air supplier may include a second air compressor to compress external air, and a vortex tube to receive the compressed air from the second air compressor to be rotated at a certain speed to form flow paths having different temperatures and to supply the compressed air cooled of a certain temperature into the chamber. 
     The vortex tube may include a vortex rotary chamber having a rotary space disposed in the chamber and configured to rotate the compressed air introduced from the second air compressor at a certain rotational speed, a compressed air supply pipe configured to introduce the compressed air from the second air compressor into the vortex rotary chamber, a hot air discharge pipe configured to expose the rotary space of the vortex rotary chamber to the exterior of the chamber and guide a first vortex stream generated by rotation from the rotary space, an adjustment valve installed at an end of the hot air discharge pipe and configured to receive an electrical signal from the control module and selectively discharge the first vortex stream to the exterior of the chamber, and a cold air discharge pipe configured to expose the rotary space of the vortex rotary chamber to the interior of the chamber and guide a second vortex stream generated by rotation of the rotary space and directed in a different direction than the first vortex stream. 
     Further, a silencer may be installed at an end of the discharge pipe. The silencer may include a silencer body having a flow hole that is gradually reduced from the end of the discharge pipe, and a sound-absorbing material buried in the silencer body. 
     Furthermore, a diffuser having a plurality of discharge holes may be further installed at the end of the discharge pipe. The discharge pipe may be connected to a center part of the diffuser, the discharge holes may be radially disposed with respect to the center part, and the diameters of the discharge holes may be sequentially increased from the center part. 
     In addition, the discharge pipe may be connected to the discharge pipe, and an opening valve may be further installed at the connected position to selectively expose an air flow path of the exhaust pipe or the cold air discharge pipe to the interior of the chamber as the control module selects the hot air supplier or the cold air supplier. 
     Features and/or utilities of the present general inventive concept may also be realized by a method of testing a semiconductor device, the method including positioning a plurality of semiconductor devices in an inner space of the chamber, and performing a test by receiving an electrical signal from a control module and selectively heating or cooling an inner space of the chamber using a temperature conversion module connected to the chamber. 
     Positioning the semiconductor devices may include rotating and opening the chamber, which is located on an upper surface of a main body, using a rotary member connected to the chamber and the main body, positioning the semiconductor devices on a board on the upper surface of the main body to be electrically connected to the board, and positioning the chamber at its original position using the rotary member so that a certain gap is located between a lower surface of the chamber and an upper surface of the main body to expose the inner space of the chamber to the exterior of the chamber. 
     In addition, the performing of the test may include selecting any one of a hot air supplier of the temperature conversion module configured to provide hot air heated to a certain temperature into the chamber and a cold air supplier of the temperature conversion module configured to provide cold air cooled to a certain temperature into the chamber using a selector electrically connected to the control module and setting a test temperature value formed in the inner space of the chamber using the control module and the selected hot air supplier or the cold air supplier. 
     Further, the performing of the test may include setting a reference temperature value using the control module, and operating the hot air supplier of the temperature conversion module configured to provide hot air heated to a certain temperature into the chamber when the set test temperature value is equal to or higher than the reference temperature value and operating the cold air supplier of the temperature conversion module configured to provide cold air cooled to a certain temperature into the chamber when the test temperature value is equal to or lower than the reference temperature value, using the control module. 
     Furthermore, the hot air supplier may include a first air compressor configured to compress external air, a housing configured to receive the compressed air from the first air compressor, a suction pipe configured to connect the first air compressor to the housing, a heater disposed in the housing and configured to receive an electrical signal from the control module to heat the compressed air to a certain temperature, and an exhaust pipe configured to connect the housing to the interior of the chamber to provide the heated compressed air into the chamber. The cold air supplier may include a second air compressor configured to compress external air, and a vortex tube configured to receive the compressed air from the second air compressor to be rotated at a certain speed to form flow paths having different temperatures and supply the compressed air cooled to a certain temperature into the chamber. The vortex tube may include a vortex rotary chamber having a rotary space disposed in the chamber and configured to rotate the compressed air introduced from the second air compressor at a certain rotational speed, a compressed air supply pipe configured to introduce the compressed air from the second air compressor into the vortex rotary chamber, a hot air discharge pipe configured to expose the rotary space of the vortex rotary chamber to the exterior of the chamber and guide a first vortex stream generated by rotation from the rotary space, an adjustment valve installed at an end of the hot air discharge pipe and configured to receive an electrical signal from the control module and selectively discharge the first vortex stream to the exterior of the chamber, and a cold air discharge pipe configured to expose the rotary space of the vortex rotary chamber to the interior of the chamber and guide a second vortex stream generated by rotation of the rotary space and directed in a different direction than the first vortex stream. The cold air discharge pipe may be connected to the exhaust pipe, and an opening valve may be further installed at the connected position. An air flow path of the exhaust pipe or the cold air discharge pipe may be selectively exposed in the chamber using the opening valve operated by receiving an electrical signal of the control module as the hot air supplier or the cold air supplier is selected. 
     Features and/or utilities of the present general inventive concept may also be realized by a semiconductor device test apparatus including a chamber to receive at least one semiconductor device and a temperature control apparatus to supply hot air and cold air, respectively, into the chamber. 
     The chamber may include an upper portion comprising side walls and a top, and a lower portion including an upper surface of a mounting apparatus. The upper portion may be mounted to the lower portion by a rotatable hinge, and the upper portion may be separated from the lower portion by a gap capable of passing air from inside the chamber to outside the chamber. 
     The temperature control apparatus may include at least one air compressor, a hot air supplier, a cold air supplier, and a diffuser. The hot air supplier may include a housing having a heater therein to heat the air from the air compressor and an exhaust pipe to output the heated air from the housing into the chamber. The cold air supplier may include a vortex rotary device including a vortex air chamber to receive compressed air from the air compressor, to generate a plurality of air currents within the vortex rotary device, to output hot air outside the chamber, and to output cold air into the chamber. The diffuser may receive at least one of hot air and cold air from the hot air supplier and cold air supplier, respectively, and output the hot air and cold air into the chamber. 
     The temperature control apparatus may be mounted to the upper portion of the chamber. 
     The vortex rotary device may include a cold air discharge pipe. The temperature control apparatus may further include a connection pipe to connect the cold air discharge pipe and the exhaust pipe and an air control valve to respectively output air from each of the hot air supplier and the cold air supplier into the chamber. 
     The semiconductor device test apparatus may further include a sensor located inside the chamber to determine a temperature within the chamber and a controller to control operation of the hot air supplier and cold air supplier based upon the temperature within the chamber and predetermined test settings, and to control opening and closing of the chamber by controlling rotation of the rotatable hinge. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and/or other aspects of the present general inventive concept will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings, in which: 
       Example embodiments are described in further detail below with reference to the accompanying drawings. It should be understood that various aspects of the drawings may have been exaggerated for clarity. 
         FIG. 1  is a cross-sectional view of an apparatus for testing a semiconductor device in accordance with an example embodiment of the present general inventive concept; 
         FIG. 2  is a cross-sectional view showing a state in which a chamber is rotated and opened; 
         FIG. 3  is a cross-sectional view of a vortex tube of  FIG. 1 ; 
         FIG. 4  is a block diagram showing the configuration of the apparatus for testing a semiconductor device of  FIG. 1 ; 
         FIG. 5  is a cross-sectional view of another example of the apparatus for testing a semiconductor device in accordance with an example embodiment of the present general inventive concept; 
         FIG. 6  is a cross-sectional view showing a state in which a chamber of  FIG. 5  is rotated and opened; 
         FIG. 7  is a block diagram showing the configuration of the apparatus for testing a semiconductor device of  FIG. 5 ; 
         FIG. 8  is a plan view of a diffuser in accordance with an example embodiment of the present general inventive concept; 
         FIG. 9  is a flowchart showing a method of testing a semiconductor device in accordance with an example embodiment of the present general inventive concept; and 
         FIG. 10  is a flowchart showing another method of testing a semiconductor device in accordance with an example embodiment of the present general inventive concept. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Various example embodiments will now be described more fully with reference to the accompanying drawings in which some example embodiments are shown. In the drawings, the thicknesses of layers and regions may be exaggerated for clarity. Like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present general inventive concept by referring to the figures. 
     Detailed illustrative embodiments are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments. This general inventive concept, however, may be embodied in many alternate forms and should not be construed as limited to only example embodiments set forth herein. 
     Accordingly, while example embodiments are capable of various modifications and alternative forms, embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit example embodiments to the particular forms disclosed, but on the contrary, example embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of the general inventive concept. 
     It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” or “directly coupled” to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” “on” versus “directly on,” etc.). 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. Spatially relative terms, such as “beneath,” “below,” “lower,” “above,” “upper” and the like, may be used herein for ease of description to describe one element or a relationship between a feature and another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the Figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, for example, the term “below” can encompass both an orientation which is above as well as below. The device may be otherwise oriented (rotated 90 degrees or viewed or referenced at other orientations) and the spatially relative descriptors used herein should be interpreted accordingly. 
     Example embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments (and intermediate structures). As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, example embodiments should not be construed as limited to the particular shapes of regions illustrated herein but may include deviations in shapes that result, for example, from manufacturing. For example, an implanted region illustrated as a rectangle may have rounded or curved features and/or a gradient (e.g., of implant concentration) at its edges rather than an abrupt change from an implanted region to a non-implanted region. Likewise, a buried region formed by implantation may result in some implantation in the region between the buried region and the surface through which the implantation may take place. Thus, the regions illustrated in the figures are schematic in nature and their shapes do not necessarily illustrate the actual shape of a region of a device and do not limit the scope. 
     It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved. 
     In order to more specifically describe example embodiments, various aspects will be described in detail with reference to the attached drawings. However, the present general inventive concept is not limited to example embodiments described. 
     Example embodiments relate to a semiconductor device and methods of fabricating the same. Other example embodiments relate to a semiconductor device having a trench isolation region and methods of fabricating the same. 
     First, the configuration of the apparatus to test a semiconductor device in accordance with the present general inventive concept will be described with reference to  FIGS. 1 to 4 . 
     The apparatus to test a semiconductor device includes a chamber  100  having side walls  100   a  and a top  100   b  defining a space within the chamber  100 . A lower end  100   c  of the chamber may have an open portion that opens toward a mounting apparatus  500 , or main body. The side walls  100   a , top  100   b , and mounting apparatus  500  may enclose the space within the chamber. The upper portion of the chamber  100  may be positioned above the mounting apparatus  500  so that a gap G is located between the upper portion of the chamber  100  and the mounting apparatus  500  when the chamber  100  is in a closed position. During operation, a plurality of semiconductor devices  50  may be positioned on the mounting apparatus  500  within the chamber  100 . A temperature control apparatus including a hot air supplier  200  and a cold air supplier  300  may be connected to the chamber  100  to heat or cool the inner space of the chamber  100  to a certain temperature value. A control module  400  may control the temperature control apparatus by transmitting an electrical signal to the temperature control apparatus to heat and cool the inner space of the chamber  100 . 
     A board  510  may be mounted on the upper surface of the mounting apparatus  500  to transmit electrical signals from the semiconductor devices  50  to circuitry outside the chamber. Sockets  520  may be installed on the board  510  to electrically connect the semiconductor devices  50  to the board  510 . 
     The chamber  100  may be mounted to the upper surface of the mounting apparatus  500  by a rotary member  600 . The rotary member  600  may include a first hinge end  610  connected to an outer side surface of the chamber  100 , a second hinge end  620  mounted to the mounting apparatus  500 , and a cylinder  630  connecting the first hinge end  610  to the second hinge end  620 . The cylinder  630  may longitudinally expand/contract to open and close the chamber  100  by receiving an electrical signal from the control module  400 . 
     The cylinder  630  may include a cylinder shaft  631 , and may be connected to a pneumatic pressure supplier  640 . The pneumatic pressure supplier  640  may receive an electrical signal from the control module  400  and supply a pneumatic pressure to the cylinder  630  to expand/contract the cylinder shaft  631 . 
     The hot air supplier  200  of the temperature control apparatus may provide hot air heated to a certain temperature into the chamber  100 , and a cold air supplier  300  may provide cold air cooled to a certain temperature into the chamber  100 . 
     Furthermore, the control module  400  may include a selector  410  to select one of the hot air supplier  200  and the cold air supplier  300  to operate. The selector  410  may be a programmed electronic device or a physical apparatus that automatically selects which supplier  200 ,  300  to operate, or it may be a manual selector to receive an input from a user. The control module  400  may include electronic components including processors, logic circuitry, memory, and interfaces to receive signals and/or inputs from the selector and the temperature control apparatus, and to output signals to the temperature control apparatus and other components of the semiconductor test apparatus  1000 . 
     The hot air supplier  200  of the temperature control apparatus may include a first air compressor  210  to compress external air, a housing  220  to receive the compressed air from the first air compressor  210 , a suction pipe  230  to connect the first air compressor  210  to the housing  220 , and a power supply  251  electrically connected to the control module  400 . A heater  250  may be located in the housing  220  to be electrically connected to the power supply  251  and to receive an electrical signal from the control module  400  to heat the compressed air to a certain temperature. An exhaust pipe  240  may connect the housing  220  to the interior of the chamber  100  to provide the heated compressed air into the chamber  100 . 
     The cold air supplier  300  may include a second air compressor  310  to compress external air and a vortex tube  320  to receive the compressed air from the second air compressor  310  to be rotated at a certain speed to form flow paths having different temperatures and to supply the compressed air cooled to a certain temperature into the chamber  100 . 
     As illustrated in  FIG. 3 , the vortex tube  320  may include a vortex rotary chamber  321  in the chamber  100  and may have a rotary space  321   a  to rotate the compressed air introduced from the second air compressor  310  at a certain speed. A compressed air supply pipe  322  may introduce the compressed air from the second air compressor  310  into the vortex rotary chamber  321 . A hot air discharge pipe  323  may expose the rotary space of the vortex rotary chamber  321  to the exterior of the chamber  100  and may guide a first vortex stream {circle around ( 1 )} generated by rotation from the rotary space. A regulation valve  324  installed at an end of the hot air discharge pipe  323  may receive an electrical signal from the control module  400  to vary the discharge of the first vortex stream {circle around ( 1 )} to the exterior of the chamber  100 . A cold air discharge pipe  325  may expose the rotary space of the vortex rotary chamber  321  to the interior of the chamber  100  and may guide a second vortex stream {circle around ( 2 )} generated by rotation from the rotary space in a direction different from the first vortex stream {circle around ( 1 )}. 
     In addition, a silencer  330  may be installed at an end of the cold air discharge pipe  325 . The silencer  330  may include a silencer body  331  having a flow hole  331   a  that has the same area as the discharge pipe  325  at the point where the silencer  330  connects to the cold air discharge pipe  325  and gradually decreases in diameter from the end of the cold air discharge pipe  325  to the flow hole  331   a . The silencer body  331  may be made of, or may include, a sound-absorbing material  332 . 
     Referring to the hot air supplier  200 , a diffuser  260 , illustrated in  FIG. 8 , may be installed at an end of the exhaust pipe  240 . The diffuser  260  has a plurality of discharge holes  261  to discharge heated air from the exhaust pipe  240 . The exhaust pipe  240  may be connected to a center part of the diffuser  260 , and the discharge holes  261  may extend radially from the center part. The discharge holes  261  may have diameters that increase from the center part outward. For example, where Dn represents a diameter of an outermost discharge hole  261  and D 1  represents a diameter of a center-most discharge hole  261 , D 1 &lt; . . . &lt;Dn. Increasing the diameter of the discharge holes  261  from the center outward aids in evenly diffusing the air from the exhaust pipe  240 , since it is more difficult for air to exit the narrower discharge holes  261  at the center of the diffuser  260  where the air from the exhaust pipe  240  has a higher air pressure than at an outer end of the diffuser  260 . 
     The first air compressor  210  may be further connected to a moisture removing apparatus (not shown) to remove moisture from external air to a predetermined level before passing the air into the chamber  100 . The air, from which the moisture is removed, may then be compressed with the first air compressor  210 , and the compressed air may be provided to the vortex tube  320 . Therefore, the cold air supplied into the chamber  100  may have no moisture or may have a moisture level below a predetermined threshold. 
     Hereinafter, operation of the apparatus to test a semiconductor device and a method of testing a semiconductor device using the same in accordance with the present general inventive concept will be described. 
     Referring to  FIGS. 1 to 4 ,  8 , and  9 , a semiconductor device positioning step S 100  is performed to position a plurality of semiconductor devices  50  in an inner space of a chamber  100 . 
     In the semiconductor device positioning step S 100 , the chamber  100  may be rotated and opened using a rotary member  600  attached to a side wall  100   b  of the chamber  100  and mounted on the mounting apparatus  500 . 
     A control module  400  may a pneumatic pressure supplier  640 , and the pneumatic pressure supplier  640  may supply a pneumatic pressure to a cylinder  630  to expand and contract a cylinder shaft  631  of the cylinder  630  to a certain length as shown in  FIG. 2 . The cylinder  630  may be a double acting cylinder in which two cylinder shafts expand and contract from both ends of the cylinder  630 . 
     As the cylinder shaft  631  is contracted toward the cylinder  630 , a first hinge end  610  connected to an end of the cylinder shaft  631  is rotated, and the cylinder  630  is rotated by a second hinge end  620  mounted to the mounting apparatus  500 . As a result, the chamber  100  having the first hinge end  610  may be opened as shown in  FIG. 2 . 
     While the chamber  100  is opened, the semiconductor devices  50  may be positioned on the board  510  mounted on the upper surface of the mounting apparatus  500 . The semiconductor devices may be electrically connected to the board  510 . 
     The board  510  may be electrically connected to the control module  400 , and a plurality of sockets  520  may be provided on the board  510 . The sockets  520  may receive the semiconductor devices  50  to electrically connect the semiconductor devices  50  to external devices, such as the control module  400 . 
     After the semiconductor devices  50  are inserted into the sockets  520 , the chamber  100  is returned to its original position by the rotary member  600 . The chamber  100  is returned to its original position by operating the cylinder shaft  631  in a reverse sequence of the above operation. 
     Specifically, the control module  400  operates the pneumatic pressure supplier  640 , and the pneumatic pressure supplier  640  supplies a pneumatic pressure to the cylinder  630  to expand the cylinder shaft  631  of the cylinder  630  to a certain length. Therefore, the chamber  100  is rotated downward to be returned to the original position as shown in  FIG. 1 . 
     Since a lower surface of the chamber  100  is separated from the upper surface of the mounting apparatus  500  by a gap G, an inner space of the chamber  100  may be exposed to the exterior of the chamber  100  through the gap G. 
     Next, a test step S 200  is performed to select whether to heat or cool the inner space of the chamber  100  using a temperature control apparatus configured to receive an electrical signal from the control module  400  and connected to the chamber  100 . 
     Specifically, a selector  410  electrically connected to the control module  400  selects one of a hot air supplier  200  of the temperature control apparatus to provide hot air heated to a certain temperature into the chamber  100  and a cold air supplier  300  of the temperature control apparatus o provide cold air cooled to a certain temperature into the chamber  100  (S 200 ). 
     When the selector  410  selects the hot air supplier  200  (S 310 ), the control module  400  sets a test temperature value set in the inner space of the chamber  100  (S 311 ). 
     Next, the control module  400  transmits an electrical signal to the hot air supplier  200 , and the hot air supplier  200  supplies hot air into the inner space of the chamber  100  (S 312 ). 
     The above step will be described in detail. 
     A first compressed air supplier  210  supplies the compressed air into a housing  220  through a suction pipe  230 . The compressed air supplied into the housing  220  is heated to a certain temperature by a heater  250  that receives power from and is heated by a power source  251 . In addition, the heated compressed air is supplied into the chamber  100  through an exhaust pipe  240 . 
     The compressed air is supplied into the inner space of the chamber  100  through a diffuser  260  at the end of the exhaust pipe  240 . The diffuser  260  has a plurality of discharge holes  261 . As discussed above, the discharge holes  261  have diameters that gradually increase from a center part of the diffuser  260  toward an outer periphery thereof. According to the above configuration, the compressed air may flow into the inner space of the chamber  100  through the plurality of discharge holes  261  at a uniform pressure. 
     The hot air introduced into the chamber  100  may flow toward the exterior of the chamber through a gap G formed between a lower surface  100   c  of the chamber  100  and an upper surface of the mounting apparatus  500 . 
     In addition, a temperature sensor  420  installed in the chamber  100  detects a temperature value of the inner space of the chamber  100 , and transmits the detected temperature value to the control module  400 . The control module  400  determines whether the detected temperature value of the inner space of the chamber  100  is equal to a predetermined test temperature value (S 313 ). 
     The control module  400  maintains operation of the hot air supplier  200  for a predetermined period of time when the detected temperature value of the inner space of the chamber  100  is equal to a predetermined test temperature, and receives an electrical signal from the semiconductor devices  50  through a board  510  mounted on the mounting apparatus  500  (S 400 ). The predetermined period of time is a semiconductor device test time set in the control module  400 . 
     In addition, the control module  400  may output results of an electrical test result via a display  430  based on the electrical signals transmitted from the semiconductor devices  50  (S 500 ). The test results may include data that the semiconductor devices  50  operate normally in an atmosphere with a predetermined test temperature value for a predetermined period of time. 
     After the completion of the semiconductor device test by the hot air supplier  200 , the control module  400  may stop an operation of the hot air supplier  200 , and open the chamber  100  using the rotary member  600  as shown in  FIG. 2  to set a state in which the tested semiconductor devices  50  can be removed from sockets  520 , thereby completing the test step. 
     Meanwhile, when the selector  410  in accordance with the present general inventive concept selects the cold air supplier  300  (S 320 ), the control module  400  sets a cold test temperature value in the inner space of the chamber  100  (S 321 ). 
     Then, the control module  400  transmits an electrical signal to the cold air supplier  300 , and the cold air supplier  300  supplies cold air into the inner space of the chamber  100  (S 322 ). 
     Specifically, the control module  400  transmits an electrical signal to a second air compressor  310 , and the second air compressor  310  generates compressed air, which is supplied into a vortex rotary chamber  321  through a compressed air supply pipe  322 . 
     A hot air discharge pipe  323  of a vortex tube  320  is in communication with the exterior of the chamber  100 , and a cold air discharge pipe  325  is in communication with the inner space of the chamber  100 . The orientations of the hot air discharge pipe  323  and the cold air discharge pipe  325  may be varied depending upon the desired characteristics of the semiconductor device test apparatus  1000 . 
     When the compressed air is supplied through the second air compressor  310  into the vortex rotary chamber  321 , the compressed air may be rotated at about one million rpm. This may be referred to as a primary vortex stream {circle around ( 1 )} or primary rotary air. 
     The primary rotary air {circle around ( 1 )} is discharged through the hot air discharge pipe  323 , and the remaining air is returned by a regulation valve  324  to form a secondary vortex stream {circle around ( 2 )} or secondary rotary air and then be discharged through the cold air discharge pipe  325 . 
     At this time, a flow of the secondary rotary air {circle around ( 2 )} passes through a lower pressure region than an inside region of a flow of the primary rotary air {circle around ( 1 )} to lose the amount of heat and then flow through the cold air discharge pipe  325 , and then, is discharged into the inner space of the chamber  100  through a silencer  330  installed at an end of the cold air discharge pipe  325 . 
     In the flows of the primary and secondary rotary air {circle around ( 1 )} and {circle around ( 2 )}, since one rotation time of the secondary rotary air {circle around ( 2 )} is equal to that of the primary rotary air {circle around ( 1 )}, an actual moving speed is lower than a moving speed of the primary rotary air {circle around ( 1 )}. 
     The difference in the moving speeds means that kinetic energy is reduced, and the reduced kinetic energy is converted into heat to increase the temperature of the primary rotary air {circle around ( 1 )} and decrease the temperature of the secondary rotary air {circle around ( 2 )}. 
     Therefore, the primary rotary air {circle around ( 1 )} finally discharged through the hot air discharge pipe  323  is discharged as hot air heated in comparison with the compressed air, and the secondary rotary air {circle around ( 2 )} discharged through the cold air discharge pipe  325  is discharged as cold air cooled in comparison with the compressed air. 
     Therefore, the cold air may be supplied into the inner space of the chamber  100  through the vortex tube  320 . 
     The cold air introduced into the inner space of the chamber  100  may flow to the exterior of the chamber  100  through the gap G between the lower surface  100   c  of the chamber  100  and the upper surface of the mounting apparatus  500 . 
     As discussed above, the temperature sensor  420  installed in the chamber  100  detects a temperature value of the inner space of the chamber  100  and transmits the detected temperature value of the inner space of the chamber  100  to the control module  400 . The control module  400  determines whether the detected temperature value of the inner space of the chamber  100  is equal to a predetermined test temperature value (S 323 ). 
     The control module  400  maintains operation of the cold air supplier  300  for a predetermined period of time when the detected temperature value of the inner space of the chamber  100  is equal to a predetermined test temperature value. The control module  400  receives electrical signals from the semiconductor devices  50  through the board  510  installed on the upper surface of the mounting apparatus  500  (S 400 ). The predetermined period of time is a semiconductor device test time set in the control module  400 . 
     The control module  400  may output an electrical test result through a display  430  based on the electrical signals transmitted from the semiconductor devices  50  (S 500 ). The test result may include data on whether the semiconductor devices  50  operate normally for a predetermined period of time in an atmosphere with a test temperature value. 
     After the completion of the semiconductor device test by the cold air supplier  200 , the control module  400  stops the operation of the hot air supplier  200 , and opens the chamber  100  using the rotary member  600  as shown in  FIG. 2  to remove the sockets  520  from the chamber  100 , thereby completing the test. 
     Above, the method of selectively operating any one of the hot air supplier  200  and the cold air supplier  300  using the selector  410  electrically connected to the control module  400  has been described. 
     Referring to  FIG. 10 , after the disposition of the semiconductor devices (S 100 ), a reference temperature value is preset in the control module  400  of the present general inventive concept. The control module  400  may operate the hot air supplier  200  when the set test temperature value is larger than the reference temperature value and the cold air supplier  300  when the test temperature value is lower than the reference temperature value. 
     The test step may include setting a reference temperature value using the control module  400  (S 600 ), setting a heating or cooling test temperature value to the control module  400  (S 700 ), determining whether the reference temperature value is lower than the test temperature value using the control module  400  (S 710 ), operating the hot air supplier  200  of the temperature control apparatus to provide hot air heated to a certain temperature into the chamber  100  using the control module  400  when the set test temperature value is higher than the reference temperature value (S 810 ), and operating the cold air supplier  300  of the temperature control apparatus to provide cold air cooled to a certain temperature into the chamber  100  when the test temperature value is lower than the reference temperature value (S 820 ). 
     Since operations of the hot air supplier  200  and the cold air supplier  300  (S 810  to S 910  and S 820  to S 910 ) are the same as described above, detailed description thereof will not be repeated. 
     Meanwhile, referring to  FIGS. 5 to 7 , the cold air discharge pipe  325  of the cold air supplier  300  may be in communication with the exhaust pipe  240  of the hot air supplier  200 . 
     That is, the silencer  330  installed at an end of the cold air discharge pipe  325  may be in communication with an end of the exhaust pipe  240  by a connection pipe  700 . 
     As the hot air supplier  200  or the cold air supplier  300  is selected by the control module  400 , an opening valve  710  connecting the connection pipe  700  to the exhaust pipe  240  may expose an air flow path of the exhaust pipe  240  or the cold air discharge pipe  325  to the interior of the chamber  100 . 
     The opening valve  710  may be a three-way valve configured to receive an electrical signal from outside the chamber to change directions of flow paths. For example, the opening valve  710  may be controlled by the control module  400 . 
     As described above, if the selector  410  selects the hot air supplier  200  or the hot air supplier  200  is operated when the test temperature value set in the control module  400  is higher than the predetermined reference temperature value, the control module  400  may transmit an electrical signal to the opening valve  710  to supply the hot air into the chamber  100 . 
     Specifically, the opening valve  710  closes the flow path of the cold air discharge pipe  325  and opens the flow path of the exhaust pipe  240  to supply the hot air flowing through the exhaust pipe  240  into the inner space of the chamber  100  through the diffuser  260 . 
     In addition, if the selector  410  selects the cold air supplier  300  or the cold air supplier  300  is operated when the test temperature value set in the control module  400  is lower than the predetermined reference temperature value, the control module  400  may transmit an electrical signal to the opening valve  710  to supply the cold air into the chamber  100 . 
     That is, the opening valve  710  closes the flow path of the exhaust pipe  240  and opens the flow path of the cold air discharge pipe  325  to supply the cold air flowing through the cold air discharge pipe  325  into the inner space of the chamber  100  through the diffuser  260 . 
     Therefore, referring to  FIGS. 5 and 6 , both the cold air and the hot air may be uniformly supplied into the inner space of the chamber  100  through the discharge holes  261  of the diffuser  260  having different diameters. 
     As a result, the hot air or the cold air may be supplied into the chamber  100  through the single diffuser  260 . 
     As can be seen from the foregoing, it is possible to selectively perform heating and cooling environment tests of semiconductor devices in a single chamber. 
     In addition, it is possible to recognize a set test temperature value to form heating or cooling test environments in the chamber, thereby testing semiconductor devices. 
     The foregoing is illustrative of example embodiments and is not to be construed as limiting thereof. Although a few example embodiments have been described, those skilled in the art will readily appreciate that many modifications are possible in example embodiments without materially departing from the novel teachings and advantages. Accordingly, all such modifications are intended to be included within the scope of this general inventive concept as defined in the claims. In the claims, means-plus-function clauses are intended to cover the structures described herein as performing the recited function, and not only structural equivalents but also equivalent structures. Therefore, it is to be understood that the foregoing is illustrative of various example embodiments and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. 
     Although a few embodiments of the present general inventive concept have been illustrated and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.