Source: https://patents.google.com/patent/US20090236700A1/en
Timestamp: 2018-11-21 18:17:37
Document Index: 634591400

Matched Legal Cases: ['art 38', 'art 38', 'art 38', 'art 38', 'art 38', 'arts 38', 'arts 39', 'arts 39', 'art 38']

US20090236700A1 - Semiconductor device and manufacturing method of the same - Google Patents
US20090236700A1
US20090236700A1 US12479915 US47991509A US2009236700A1 US 20090236700 A1 US20090236700 A1 US 20090236700A1 US 12479915 US12479915 US 12479915 US 47991509 A US47991509 A US 47991509A US 2009236700 A1 US2009236700 A1 US 2009236700A1
US12479915
US8018033B2 (en )
First, a main surface (a surface where an electronic circuit element and an electronic circuit are formed) of the semiconductor element 33 having a rear surface where die bonding material 81 such as a die bonding film is adhered and held by an absorbing collet 82. The semiconductor element 33 adhered and held by the absorbing collet 82 is mounted on and fixed to, via the die bonding material 81, a large size board 83 which will become the wiring board 32. See FIG. 14( a). Plural semiconductor elements 33 are mounted on and fixed to the board 83.
The electrode pads of the semiconductor element 33 and the electrode pads of the board 83 (not illustrated) provided so as to correspond to the electrode pads of the semiconductor element 33 are connected to each other by using the bonding wires 34. See FIG. 14( b). At this time, in an area situated outside the electrode pads to which the bonding wires 34 are connected on the upper surface of the board 83, namely in a position far from the semiconductor elements 33, bonding wires 84A are provided in a loop shape so as to connect to electrode pads (not illustrated) connected to the ground wiring pattern 35 in an area where the neighboring semiconductor elements 33 are mounted. See FIG. 15( c). In a case where the loop-shaped bonding wire 84A has the same diameter as that of the bonding wire 34 and is formed of the same material as that of the bonding wire 34, the loop-shaped bonding wire 84A can be formed in the same wire boding step.
The ground electrode 38 may be formed by using the conductive member 85 such as a metal plate or metal stick having a configuration of a rectangle without one side, in addition to the bonding wire 84A. In this case, the conductive member 85 connects, like a bridge, the electrode pads connected to the ground wiring pattern 35. See FIG. 15( c)′. In any case, while the diameter of the bonding wire 34 is, for example, approximately 18 μm through approximately 30 μm, the diameter of the ground electrode 38 is substantially equal to or greater than the diameter of the bonding wire 34. For example, the diameter of the ground electrode 38 is approximately 100 μm through approximately 500 μm.
Next, plural semiconductor elements 33 mounted on the board 83, the bonding wires 34 connected to the semiconductor elements 33, the ground electrodes 38, and others are sealed by the sealing resin 36A. See FIG. 16( d). At this time, plural semiconductor elements 33 mounted on and fixed to the main surface of the board 83, the bonding wires 34 connected to the semiconductor elements 33, the loop-shaped bonding wires 84A, and others are sealed in a lump.
After that, solder balls 31 as outside connection terminals, corresponding to plural semiconductor elements 33, are provided on another main surface (rear surface) of the board 83. See FIG. 16( e). Next, the board 83 and the sealing resin 36A are cut in their thickness directions at the substantially center part in the length direction of the loop-shaped bonding wires 84A (or the conductive members 85 such as the metal plate or metal stick having a configuration of a rectangle without one side). See FIG. 17( f). In this cutting process, the semiconductor element 33 sealed by the sealing resin 36A on the main surface of the board 83, the bonding wires 34 connected to the semiconductor element 33, and others are treated as a single unit. A blade dicing method using a dicing saw 88 may be used as a cutting method. A so called laser dicing method also may be used.
As a result of this, the semiconductor device 30 is formed where the semiconductor element 33, the bonding wires 34 connected to the semiconductor element 33, the ground electrodes 38, and others are provided on the main surface of the wiring board 32 and sealed by the sealing resin 36. See FIG. 17( g). In the semiconductor device 30, the end part 38-1 of the ground electrode 38 formed by cutting the bonding wire 84A is exposed at the side surface of the sealing resin 36. On the other hand, the solder balls 31 as the outside connection terminals are provided on another main surface of the wiring board 32.
The adhesive member 40 made of a conductive adhesive such as solder or silver (Ag) paste is selectively provided to the end part 38-1 of the ground electrode 38 exposed at the side surface of the sealing resin 36 by using a dispensing method, a screen printing method, or the like. See FIG. 18( h). Next, the shielding member 39 formed by a box-shaped metal body (having a cross section of a rectangle without one side) is provided so as to cover the sealing resin 36. See FIG. 18( i). At this time, by providing adhesive 89 on the internal bottom surface of the shielding member 39 in advance, the shielding member 39 is fixed to the sealing resin 36 by the adhesive 89.
Next, a heating process is applied in this state so that the end part 38-1 of the ground electrode 38 and the shielding member 39 are connected to each other by the adhesive 40. See FIG. 19( j). Here, as a heating method, a method for selectively heating a portion of the side surface of the shielding member 39, the portion being where the end part 38-1 of the ground electrode 38 is positioned, may be applied. In addition, in a case where the adhesive 40 is made of solder, heating may be applied by reflow. In a case where the adhesive 40 is made of conductive adhesive such as silver (Ag) paste, a high temperature tank is used so that heat hardening may take place.
That is, after the step illustrated in FIG. 17( g), the adhesive member 40 made of a conductive adhesive such as solder or silver (Ag) paste is provided to the end part 38-1 of the ground electrode 38 exposed at the side surface of the sealing resin 36 by a using dispensing method, a screen printing method, or the like. See FIG. 20( h)′. Next, a plate-shaped or a foil metal shielding member 39A having a substantially cross-shaped configuration is arranged on the upper surface of the sealing resin 36 of the semiconductor device 30. See FIG. 20( i)′. At this time, by selectively providing the adhesive 89 in advance on the shielding member 39A coming in contact with the upper surface of the sealing resin 36, the shield member 39A is fixed to the upper surface of the sealing resin 36 via the adhesive 89.
Next, the plate-shaped or the foil shielding member 39A is bent along the external side surfaces of the sealing resin 36 so as to be in parallel with the side surfaces. See FIG. 21( i)″. As a result of this, the shield member 39 having a cross section of a rectangle without one side is formed.
After that, a heating process is applied to the semiconductor device where the shielding member 39 is fixed. See FIG. 21( j)′. As a result of this, the end parts 38-1 of the ground electrodes 38 and the shielding member 39 are connected to each other via the adhesive material 40. Here, as a heating method, the same method as that discussed with reference to FIG. 19( j) may be used.
That is, after the step illustrated in FIG. 17( g), the metal shielding member 39 having a cross section of a rectangle without one side is provided from an upper part of the sealing resin 36 of the semiconductor device 30. See FIG. 22. At this time, the connection projection parts 39B are provided at parts of the internal side surface of the shielding member 39, the parts corresponding to the end surfaces 38-1 of the ground electrodes 38 exposed at the side surfaces of the sealing resin 36. In addition, the length L between the connection projection parts 39B facing each other is substantially equal to or slightly shorter than the external dimension P of the semiconductor device 30. In addition, the adhesive 40 is provided on the internal bottom surface of the shielding member 39.
First, a main surface (a surface where an electronic circuit element and an electronic circuit are formed) of the semiconductor element 33 having a rear surface where the die bonding material 81 such as a die bonding film is adhered and held by an absorbing collet 82. The semiconductor element 33 absorbed and held by the absorbing collet 82 is mounted on and fixed to, via the die bonding material 81, a large size board 83 which will become the wiring board 32. See FIG. 24( a). Plural semiconductor elements 33 are mounted on and fixed to the board 83.
The electrode pads of the semiconductor elements 33 and the electrode pads (not illustrated) of the board 83 (not illustrated) provided so as to correspond to the electrode pads of the semiconductor elements 33 are connected to each other by using the bonding wires 34. See FIG. 24( b)1. At this time, in an area situated outside the electrode pads to which the bonding wires 34 are connected on the upper surface of the board 83, namely in a position far from the semiconductor elements 33, the bonding wires 84B are provided in a loop shape so as to connect the electrode pads (not illustrated) connected to the ground wiring pattern 35 in an area where the neighboring semiconductor elements 33 are mounted. See FIG. 24( b)1. In other words, the loop-shaped bonding wires 84B are positioned on the boundary with a mounting area of neighboring other semiconductor elements 33 at four sides of each semiconductor element 33 and extend in parallel with the boundary. See FIG. 24( b)2. In a case where the loop shaped bonding wire 84B has the same diameter as that of the bonding wire 34 and is formed of the same material as that of the bonding wire 34, the loop shaped bonding wires 84B can be formed in the same wire bonding step.
The ground electrodes 38 may be formed by using the conductive member 85 such as a metal plate or metal stick having a configuration of a rectangle without one side, in addition to the bonding wire 84B. In this case, the conductive member 85 connects, like a bridge, the electrode pads connected to the ground wiring pattern 35. See FIG. 15( c)′.
Next, plural semiconductor elements 33 mounted on the board 83, the bonding wires 34 connected to the semiconductor elements 33, the bonding wires 84B, and others are sealed by the sealing resin 36A. See FIG. 25( c). At this time, plural semiconductor elements 33 mounted on and fixed to the main surface of the board 83, the bonding wires 34 connected to the semiconductor elements 33, the bonding wires 84B, and others are sealed in a lump.
After that, solder balls 31 as outside connection terminals, corresponding to plural semiconductor elements 33, are provided on another main surface (rear surface) of the board 83. See FIG. 25( d). Next, the board 83 and the sealing resin 36A are cut in their thickness directions at the substantially center part in the length direction of the loop shaped bonding wire 84B (or the conductive member 85 such as the metal plate or metal stick having a configuration of a rectangle without one side). See FIG. 26( e). In this cutting process, the semiconductor element 33 sealed by the sealing resin 36A on the main surface of the board 83, the bonding wires 34 connected to the semiconductor element 33, and others are treated as a single unit. A blade dicing method using a dicing saw 88 may be used as a cutting method. A so called laser dicing method also may be used.
As a result of this, the semiconductor device 50 is formed where the semiconductor element 33, the bonding wires 34 connected to the semiconductor element 33, the bonding wires 84B, and others are provided on the main surface of the wiring board 32 and sealed by the sealing resin 36. See FIG. 26( f). In the semiconductor device 50, the ground electrode 38 formed by cutting the bonding wire 84B in the length direction is provided so that the width (diameter) cross section of the bonding wire 84B is exposed in the loop shape at the side surface of the sealing resin 36. On the other hand, the solder balls 31 as the outside connection terminals are provided on another main surface of the wiring board 32.
First, a main surface (a surface where an electronic circuit element and an electronic circuit are formed) of the semiconductor element 33 having a rear surface where the die bonding material 81 such as a die bonding film is adhered and held by an absorbing collet 82. The semiconductor element 33 adhered and held by the absorbing collet 82 is mounted on and fixed to, via the die bonding material 81, a large size board 83 which will become the wiring board 32. See FIG. 28( a). Plural semiconductor elements 33 are mounted on and fixed to the board 83.
Next, the electrode pads of the semiconductor elements 33 and the electrode pads of the board 83 (not illustrated) provided so as to correspond to the electrode pads of the semiconductor elements 33 are connected to each other by using the bonding wires 34. See FIG. 28( b). At this time, in an area situated outside the electrode pads to which the bonding wires 34 are connected on the upper surface of the board 83, namely in a position far from the semiconductor elements 33, the bonding wires 84C extending in the substantially vertical direction are provided on the electrode pads (not illustrated) connected to the ground wiring pattern 35 (not shown) by using the bonding tool 90. In a case where the bonding wire 84C extending in the vertical direction has the same diameter as that of the boding wire 34 and is formed by the same material as that of the bonding wire 34, the boding wires 84C can be formed in the same wire bonding step. In other words, wire bonding is performed by using a known bonding tool 90 on the electrode pads 37 (see, for example, FIG. 3) and the bonding tool 90 is pulled up in the vertical direction. In a position higher than the top part of the wire loop of the bonding wire 84C, the wire is cut.
Alternatively, plural ball bumps 84D are stacked on the electrode pad 37 and the upper surface of the top ball bump 84D is positioned at the designated height, so that the ground electrode 38 is formed. See FIG. 29( c)′. In any case, the ground electrode 38 has length whereby the head end part is exposed at the upper surface of the sealing resin 36 of the semiconductor device 70.
Next, plural semiconductor elements 33 mounted on the board 83, the bonding wires 34 connected to the semiconductor elements 33, the bonding wires 84C, and others are sealed by the sealing resin 36A. See FIG. 30( d). At this time, plural semiconductor elements 33 mounted on and fixed to the main surface of the board 83, the bonding wires 34 connected to each semiconductor element 33, the bonding wires 84C, and others are sealed in a lump.
A grinding process is applied to the sealing resin 36A so that the ground electrodes 38B are exposed at the upper surface of the sealing resin 36A. See FIG. 30( e). The grinding process may be performed with a grinder 91.
After that, solder balls 31 as outside connection terminals, corresponding to plural semiconductor elements 33, are provided on another main surface (rear surface) of the board 83. See FIG. 31( f). Next, the board 83 and the sealing resin 36A are cut in their thickness directions. See FIG. 31( g). In this cutting process, the semiconductor element 33 sealed by the sealing resin 36A on the main surface of the board 83, the bonding wires 34 connected to the semiconductor element 33, and others are treated as a single unit. A blade dicing method using a dicing saw 88 may be used as a cutting method. A so called laser dicing method also may be used.
As a result of this, the semiconductor device 70 is formed where the semiconductor element 33, the bonding wires 34 connected to the semiconductor element 33, the ground electrodes 38B, and others are provided on the main surface of the wiring board 32 and sealed by the sealing resin 36. See FIG. 31( g). In the semiconductor device 70, the end part 38-1 of the ground electrode 38B is exposed at the side surface of the sealing resin 36. On the other hand, the solder balls 31 as the outside connection terminals are provided on another main surface of the wiring board 32. See FIG. 31( h). Next, the box-shaped metal shielding member 39 (having a cross section of a rectangle without one side) is provided so as to cover the sealing resin 36.
US12479915 2007-01-31 2009-06-08 Semiconductor device and manufacturing method of the same Active 2027-05-29 US8018033B2 (en)
JP2007051601W JPWO2008093414A6 (en) 2007-01-31 Semiconductor device and manufacturing method thereof
US13198986 US8497156B2 (en) 2007-01-31 2011-08-05 Semiconductor device and manufacturing method of the same
JP2007051601W Continuation JPWO2008093414A6 (en) 2007-01-31 Semiconductor device and manufacturing method thereof
US13198986 Division US8497156B2 (en) 2007-01-31 2011-08-05 Semiconductor device and manufacturing method of the same
US20090236700A1 true true US20090236700A1 (en) 2009-09-24
US8018033B2 US8018033B2 (en) 2011-09-13
ID=39673734
US12479915 Active 2027-05-29 US8018033B2 (en) 2007-01-31 2009-06-08 Semiconductor device and manufacturing method of the same
US13198986 Active US8497156B2 (en) 2007-01-31 2011-08-05 Semiconductor device and manufacturing method of the same
US (2) US8018033B2 (en)
JP (1) JP5120266B6 (en)
KR (1) KR101057368B1 (en)
CN (1) CN101617400A (en)
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US8018033B2 (en) 2011-09-13 grant
KR101057368B1 (en) 2011-08-18 grant
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KR20090087076A (en) 2009-08-14 application
JP5120266B2 (en) 2013-01-16 grant
JP5120266B6 (en) 2018-06-27 grant
JPWO2008093414A1 (en) 2010-05-20 application
US8497156B2 (en) 2013-07-30 grant
WO2008093414A1 (en) 2008-08-07 application
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