WO1999063594A1 - Dispositif a semi-conducteurs - Google Patents
Dispositif a semi-conducteurs Download PDFInfo
- Publication number
- WO1999063594A1 WO1999063594A1 PCT/JP1999/002356 JP9902356W WO9963594A1 WO 1999063594 A1 WO1999063594 A1 WO 1999063594A1 JP 9902356 W JP9902356 W JP 9902356W WO 9963594 A1 WO9963594 A1 WO 9963594A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin package
- semiconductor device
- resin
- internal terminal
- semiconductor chip
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 156
- 229920005989 resin Polymers 0.000 claims abstract description 156
- 239000011347 resin Substances 0.000 claims abstract description 156
- 239000000463 material Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 description 16
- 239000000758 substrate Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- 230000008602 contraction Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
- H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01029—Copper [Cu]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12043—Photo diode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/483—Containers
- H01L33/486—Containers adapted for surface mounting
Definitions
- the present invention relates to a resin package type semiconductor device.
- the present invention relates to a semiconductor device suitable for surface mounting on a substrate.
- FIGS. 18 and 19 show examples of a conventional semiconductor device.
- the illustrated semiconductor device B is configured as a light emitting device and includes a resin package 90, a semiconductor chip 93, a wire W, a first lead 91, and a second lead 92.
- the first and second leads 91 and 92 include horizontal internal terminals 9 la and 92 a located in the resin package 90 and external terminals 9 lb and 9 lb exposed outside the resin package 90. 9 2b. Bottom portions 94a, 94b flush with the bottom surface 90b of the resin package 90 are formed on the external terminals 91b, 92b.
- the semiconductor chip 93 is, for example, a light emitting element, and is bonded to the internal terminal 91 a and sealed in a resin package 90.
- the wire W has a first end bonded to an electrode on the upper surface of the semiconductor chip 93 and a second end bonded to an internal terminal 92a, which is enclosed in a resin package 90. It has been.
- the resin package 90 is made of, for example, a transparent epoxy resin into which no filler is mixed, and a lens portion 95 as a convex lens is formed on an upper surface 90 a of the resin package 90.
- the above-described semiconductor device B has the following problems.
- the wire W may be broken.
- solder paste H is applied to the electrode pads 97a and 97b on the substrate 96. Apply.
- the semiconductor device B is mounted on the substrate 96.
- the substrate 96 and the semiconductor device B are placed in a heating furnace and heated.
- the heating temperature is, for example, about 240 ° C.
- the heating temperature is, for example, about 240 ° C.
- the solder paste H is re-melted.
- the solder paste H is solidified, and the semiconductor device B is fixed to the substrate 96.
- the solder paste H is solidified at, for example, 18 ° C., whereby the first and second leads 91, 92 are solidified. Are fixed to the electrode pads 97a and 97b.
- the resin package 90 is still in a softened state in which thermal expansion has occurred, and subsequently contracts with decreasing temperature. The reason is that the glass transition temperature of the epoxy resin containing no filler is about 120 ° C., which is lower than the temperature at which the solder paste H solidifies.
- the lens part 95 and the semiconductor chip 93 are combined with each other in order to enhance the light condensing effect. It is desired to increase the interval between the two. The reason is that the light emitted from the semiconductor chip 93 travels at a certain spread angle, while the light reaching the lens part 95 is increased by increasing the distance between the semiconductor chip 93 and the lens part 95. This is because it is possible to approach the light ray parallel to the optical axis of the lens portion 95.
- the entire semiconductor device B becomes larger.
- the thickness t of the resin decreases over a wide range. In this case, the strength of the resin package 90 is poor, and the resin package 90 is easily cracked. It becomes. Disclosure of the invention
- An object of the present invention is to provide a semiconductor device capable of solving or reducing the above-mentioned problems of the conventional technology.
- the semiconductor device provided by the present invention includes:
- a resin having a top surface and a bottom surface facing in the thickness direction, and a first side surface and a second side surface facing in the width direction.
- a semiconductor device comprising:
- At least one of the first and second internal terminals is characterized by being bent in the thickness direction of the resin package.
- the semiconductor chip is one of a light emitting element and a light receiving element
- the resin package has a light transmitting property
- the resin package is made of an epoxy resin.
- a focusing lens portion is provided on the upper surface of the resin package.
- the bonding portion of the semiconductor chip is such that the first internal terminal has the first side surface on the first side surface.
- the resin is more deviated toward the bottom of the package than the position where it is immersed in the package.
- the first internal terminal is provided with an inclined surface that faces each of the semiconductor chip and the lens unit and that can reflect received light.
- the second internal terminal since the second internal terminal is bent, the second internal terminal faces the semiconductor chip and the lens unit, and can reflect received light.
- An inclined surface is provided.
- the first internal terminal has a concave surface surrounding the periphery of the semiconductor chip, facing the upper surface of the resin package, and capable of reflecting received light.
- the concave portion defined by the concave surface is filled with a coating material having a light transmitting property that is softer than the resin package, and the semiconductor chip is covered with the coating material. I have.
- each of the first and second internal terminals is bent, so that the bonding portion of the semiconductor chip is such that the first internal terminal enters the resin package on the first side surface.
- the position is deviated toward the bottom of the resin package from the position, and the bonding portion at the second end of the wire is such that the second internal terminal is located on the second side surface, and It is deviated closer to the bottom surface of the resin package than the position where it is immersed in the resin package.
- each of the first and second internal terminals has a crank shape.
- each of the first and second internal terminals is bent, so that the bonding portion of the semiconductor chip is such that the first internal terminal enters the resin package on the first side surface.
- the position of the wire is shifted toward the upper surface of the resin package from the position, and the bonding portion at the second end of the wire is such that the second internal terminal is located inside the resin package on the second side surface. It is deviated closer to the upper surface of the resin package than the immersion position.
- the entirety of the semiconductor chip and the wires are heated when the resin package is heated together with the resin package so as to soften the resin package. It is surrounded by a softer material than the cage.
- each of the first and second external terminals has a bottom surface extending along the bottom surface of the resin package.
- the first and second external terminals are exposed to the outside of the resin package from a first side surface and a second side surface of the resin package.
- At least one of the first and second external terminals is exposed to the outside of the resin package from a bottom surface of the resin package.
- FIG. 1 is a perspective view of a semiconductor device according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along the line II-II of FIG.
- FIG. 3 is a plan view of a lead frame used for manufacturing the semiconductor device of FIG.
- FIG. 4 is a plan view showing a state where a semiconductor chip is mounted on the lead frame of FIG. 3 and wire bonding is performed.
- FIG. 5 is a plan view showing a state where the semiconductor chips and wires of FIG. 4 are surrounded by a resin cage.
- FIG. 6 is a cross-sectional view illustrating an operation when the semiconductor device according to the first embodiment is mounted.
- FIG. 7 is a sectional view of a semiconductor device according to a second embodiment of the present invention.
- FIG. 8 is a sectional view of a semiconductor device according to a third embodiment of the present invention.
- FIG. 9 is a perspective view of a main part of a semiconductor device according to the third embodiment.
- FIG. 10 is a sectional view of a semiconductor device according to a fourth embodiment of the present invention.
- FIG. 11 is a sectional view of a semiconductor device according to a fifth embodiment of the present invention.
- FIG. 12 is a perspective view of a semiconductor device according to a sixth embodiment of the present invention.
- FIG. 13 is a sectional view of FIG. 110X111-XIII.
- FIG. 14 is a cross-sectional view illustrating the operation of the semiconductor device according to the sixth example.
- FIG. 15 is a sectional view of a semiconductor device according to a seventh embodiment of the present invention.
- FIG. 16 is a sectional view of a semiconductor device according to an eighth embodiment of the present invention.
- FIG. 17 is a sectional view of a semiconductor device according to a ninth embodiment of the present invention.
- FIG. 18 is a perspective view illustrating an example of a conventional semiconductor device.
- FIG. 19 is a cross-sectional view illustrating the operation of the semiconductor device of FIG.
- FIG. 20 is a cross-sectional view illustrating a state in which the height of the lead of the semiconductor device of FIG. 18 is changed.
- the semiconductor device A includes a light emitting element 1 as a semiconductor chip, a wire W, a resin package 2, a first lead 4 and a second lead 5.
- the resin package 2 is made of, for example, a transparent epoxy resin containing no filler, and is formed in a rectangular parallelepiped shape surrounding the light emitting element 1 and the wire W. However, on the upper surface 2a of the resin package 2, a hemispherical lens portion 3 protruding upward is formed.
- the first and second leads 4 and 5 are both formed of a thin metal plate such as copper having a certain width.
- the first lead 4 has a first internal terminal 4 a immersed in the resin package 2 from the first side surface 2 c of the resin package 2 and a first internal terminal 4 a exposed to the outside of the resin package 2 from the first side surface 2 c. 1 external terminal 4b.
- the first external terminal 4 b is bent and provided with a bottom surface 45 extending flush with the bottom surface 2 b of the resin package 2.
- the first internal terminal 4a is also bent. As a result, the first internal terminal 4a has a horizontal portion 40a near the first side surface 2c, a horizontal portion 40c near the center of the resin package 2, and these horizontal portions 40c. An inclined portion 4 Ob located between a and 40c is provided.
- “horizontal” in the embodiment of the present invention means that it is parallel to the bottom surface 2 b of the resin package 2.
- the height Ha from the bottom surface 2b of the resin package 2 to the horizontal portion 40a is relatively large.
- the light emitting element 1 is bonded on the horizontal part 40 c so that the light emitting element 1 is located directly below the lens part 3. Have been.
- the inclined portion 40b is a portion inclined so that the horizontal portion 40c is displaced to a position lower than the horizontal portion 40a by an appropriate dimension Hb.
- the inclined surface 40b 'as the upper surface of the inclined portion 4Ob faces the lens portion 3 of the resin package 2 and the light emitting element 1 at a fixed angle, and the light emitting element 1 It is a surface that can reflect the light traveling toward O b ′ toward the lens unit 3.
- a means for increasing the light reflection efficiency of the inclined surface 4 Ob ′ a means of providing a white paint film or a metal film having a luminous surface on the inclined surface 40 may be adopted.
- the second lead 5 includes a second internal terminal 5a immersed in the resin package 2 from a second side 2d facing the first side 2c of the resin package 2, and a second side 2 and d has a second external terminal 5 b exposed to the outside of the resin package 2.
- the second external terminal 5 b is bent in a symmetrical shape with the first external terminal 4 b, and has a bottom portion 55 extending flush with the bottom surface 2 b of the resin package 2.
- the second internal terminal 5a has a horizontal shape having the same height as the horizontal portion 40a of the first internal terminal 4a.
- the wire W has a first end bonded to an electrode on the upper surface of the light emitting element 1 and a second end closer to the center of the resin package 2 of the second internal terminal 5a. Bonding.
- the second lead 5 is mechanically and electrically connected to the light emitting element 1 via the wire W.
- a lead frame 6 as shown in FIG. 3 is used.
- the lead frame 6 is obtained by punching a metal plate made of copper, for example, and has a pair of side bands 60 a and 60 Ob extending in parallel. These side bands 60a and 6Ob are separated from each other by a plurality of cross members 61 provided at a constant interval L. In a region between two cross members 61 adjacent to each other, leads 62 a and 62 b extending so as to approach each other are provided on the side bands 60 a and 60 ob so as to be separated from each other. I have. These leads 62a and 62b are the original parts of the first and second leads 4 and 5 described above, and the inner end of the lead 62a is already bent.
- this portion is formed in the same shape as the first internal terminal 4a shown in FIG.
- the light emitting element 1 is bonded to the inner end of the lead 62a.
- both ends of the wire W are bonded to the upper surface of the light emitting element 1 and the inner end of the lead 62b.
- a resin surrounding the light emitting element 1 and the wire W, and a package 2 are formed.
- This resin cage 2 can be formed by, for example, a transfer molding method, and the lens portion 3 can be formed at the same time. Resin,.
- the leads 62a and 62b are separated from the side bands 60a and 60b (lead cut step). Finally, a portion of the leads 62 and 62b that protrudes from the resin package 2 is bent (lead forming process). Thereby, the semiconductor device A as shown in FIG. 1 is obtained.
- the semiconductor device A is used, for example, mounted on a substrate.
- the solder reflow method is preferably adopted.
- a solder paste H is applied to the surface of two electrode pads 70 provided on the substrate 7 and the first and second external terminals 4 are applied.
- the semiconductor device A is carried into the heating furnace together with the substrate 7 and heated.
- the solder paste H is heated to 240, for example, and re-melted, the semiconductor device A and the substrate 7 are carried out of the heating furnace, and the solder paste H is cooled and solidified.
- the first and second leads 4 and 5 are fixed to the two electrode pads 70.
- the wire bonding is performed by heat shrinking the resin package in a softened state even after the external terminal is fixed to the electrode pad. A large stress was acting on the part.
- the semiconductor device A according to the present embodiment as shown in FIG. 6, when the resin package 2 contracts from the state of thermal expansion to the position indicated by the phantom line in FIG.
- the inclined portion 40b of the first internal terminal 4a provides resistance to resin shrinkage. More specifically, when the resin package 2 contracts, the first lead 4 is relatively pulled out between the resin package 2 and the first lead 4 toward the outside of the resin package 2.
- the slope 4 O b It exerts a role of reducing opposing actions.
- the inclined portion 4 Ob also has a role of preventing the resin closer to the first side surface 2 c than the inclined portion 40 from moving toward the first end of the light emitting element 1 or the wire W. Fulfill. Therefore, the stress acting on the bonding portion of the first end of the wire W can be reduced.
- the first internal terminal 4a moves around the upper portion of the inclined portion 40b (the portion indicated by reference numeral N1 in FIG. 6). It can be expected that the robot rotates toward the upper part of the arrow N2 and assumes a posture emphasized using a virtual line. When such rotation occurs, the light emitting element 1 moves in the direction of the second internal terminal 5a. This moving direction coincides with the shrinking direction of the resin package 2 and is a direction that weakens the tension of the wire W. Therefore, the effect of preventing the wire W from being disconnected can be obtained by such a configuration.
- the semiconductor device A of the present embodiment is used, for example, as a light emitting device of an optical sensor.
- the light emitting element 1 when the light emitting element 1 emits light, the light traveling from the light emitting element 1 toward the lens unit 3 is refracted by the lens unit 3 in the optical axis direction of the lens unit 3. Can be done. Since the height of the light emitting element 1 in the resin package 2 is low because the first internal terminal 4a is bent, the distance between the light emitting element 1 and the lens unit 3 is increased. be able to. Therefore, the divergence angle of light reaching the lens unit 3 from the light emitting element 1 can be reduced, and ⁇ that has passed through the lens unit 3 is easily focused in the optical axis direction of the lens unit 3 by that much.
- the light emitting element 1 emits light not only upward but also toward its periphery.
- part of the light emitted toward the periphery of the light emitting element 1 travels toward the lens unit 3 by being reflected by the inclined surface 4 Ob ′. Therefore, it is possible to increase the light emission amount of the light from the lens unit 3 and further increase the light irradiation efficiency to a desired area.
- the height of the horizontal portion 40c to which the light emitting element 1 is bonded is low, the remaining portion of the first internal terminal 4a and the entire second internal terminal 5a are located on the bottom surface of the resin package 2. It is located much higher than 2b, and the thickness of the resin in the region below those parts is large. Therefore, the strength of the resin package 2 can be secured. You. When the semiconductor device A is fixed to the substrate using the first and second external terminals 4b and 5b, no matter what the first and second external terminals 4b and 5b and the resin package 2 are.
- the force is applied to the contact point between the first lead 4 on the first side surface 2c and the resin package 2 and the second lead 5 on the second side surface 2d and the resin package 2 It easily acts on the point of contact with However, the force ⁇ those portions are located particularly high from the bottom surface 2 b of the resin package 2 , and the thickness of the resin package 2 in the peripheral portion is large. Cracks can be easily prevented from occurring.
- a light receiving element can be used instead of the light emitting element 1, and the semiconductor device can be configured as a light receiving apparatus for an optical sensor, for example.
- the light receiving element a photodiode or a photo transistor can be used.
- the lens portion 3 acts so as to converge the light traveling toward the lens portion 3 from outside the resin package 2 to the light receiving element.
- the inclined surface 4 Ob ′ of the first internal terminal 4 a plays a role of reflecting light traveling from the outside into the resin package 2 toward the light receiving element. Therefore, when the semiconductor device A is configured as a light receiving device, the light receiving sensitivity can be increased.
- both a light emitting element and a light receiving element can be used as a semiconductor chip.
- FIG. 7 shows a semiconductor device Aa according to the second embodiment of the present invention.
- the same or similar elements as those of the semiconductor device A of the first embodiment are denoted by the same reference numerals.
- the semiconductor device Aa is obtained by bending the second internal terminal 5 a of the second lead 5 so as to provide the inclined portion 50.
- the inclined portion 50 is opposed to the light emitting element 1 and the lens portion 3 and has an inclined surface 50 ′ capable of reflecting received light.
- a first internal terminal 4a is provided with a cap portion 43 having an upward concave surface 43a, and a light emitting element 1 is provided on a bottom portion 43b of the cup portion 43. Are bonded.
- the concave surface 43a can reflect the received light.
- the concave portion of the cup portion 43 is filled with a coating material 75 that is transparent and softer than the resin package 2, and the light emitting element 1 is covered with the coating material 75.
- the coating material 75 for example, a silicone resin is used.
- the semiconductor device Ab having the above configuration most of the light emitted from the light emitting element 1 toward the periphery thereof can be efficiently reflected toward the lens unit 3 by the concave surface 43a. Therefore, the amount of light emitted from the lens unit 3 can be further increased. Further, since the light emitting element 1 is covered with the covering material 75, even if an external impact force acts on the resin package 2, the impact force is not directly transmitted to the light emitting element 1. Thus, the light-emitting element 1 can be protected.
- the first internal terminal 4 a has a horizontal portion 40 a near the first side surface 2 c of the resin package 2 and a bottom portion 4 3 b of the cup portion 43 formed as a part of the cup portion 43.
- the light emitting element 1 has a configuration in which the bonding portion of the light emitting element 1 is lower than the horizontal portion 40a.
- the basic configuration of the first internal terminal 4a is common to that of the semiconductor device A according to the first embodiment described above. Therefore, in the process of mounting on the board using the solder reflow technique, the same effect of preventing wire breakage as described for the semiconductor device A can be obtained.
- FIG. 10 shows a semiconductor device Ac according to a fourth embodiment of the present invention.
- the semiconductor device Ac has a configuration in which the bottom 43 b of the cup portion 43 provided on the first lead 4 and the bottom surface 2 b of the resin package 2 are exposed to the outside. For this reason, the bottom 43b is an external terminal.
- the first lead 4 originally has a portion exposed to the outside from the first side surface 2 of the resin package 2 as shown by a phantom line in FIG. 10 in the manufacturing process of the semiconductor device Ac. However, this portion has been cut and removed at the portion of the first side surface 2c.
- FIG. 11 shows a semiconductor device Ad according to a fifth embodiment of the present invention.
- This semi The body device Ad is different from the above-described semiconductor device Ac in the shape of the second lead 5, and the other configuration is the same as the semiconductor device Ac.
- the second internal terminal 5 a of the semiconductor device Ad is bent in an L-shape, and has a horizontal portion 51 and a bottom surface of the resin package 2 from an inner end of the horizontal portion 51. It has a falling part 52 extending to 2b.
- the second external terminal 5b extends to the lower end of the falling portion 52, is exposed from the bottom surface 2b of the resin package 2, and overlaps the bottom surface 2b.
- FIGS. 12 to 14 show a semiconductor device Ae according to a sixth embodiment of the present invention.
- the semiconductor device Ae is configured such that the first and second internal terminals are formed such that falling portions 40 d and 50 d are formed in the intermediate portion between the first and second internal terminals 4 a and 5 a.
- Each of 4a and 5a has a configuration bent in a crank shape.
- each of the horizontal portion 40 c to which the light emitting element 1 is bonded and the horizontal portion 50 c to which the second end of the wire W is bonded are connected to the first side surface 2 c and the second side 2 c of the resin package 2.
- the horizontal portions 40a and 50a located near the side surface 2d of the lower surface are located lower than the horizontal portions 40a and 50a.
- the solder paste H when the solder paste H is mounted on the substrate 7 using the solder reflow method, the solder paste H When the resin package 2 still shrinks after solidification, the falling portions 40d and 50d become resistance to the shrinkage. For this reason, according to the same principle as described with reference to FIG. 6, the contraction force of the resin package 2 can be less likely to act on the bonding portion at the first end of the wire W, and the wire W 2 It can hardly act on the bonding part at the end You. Further, as shown by the broken lines in FIG. 14, the horizontal portions 40 c and 50 c of the first and second internal terminals 4 a and 5 a are contracted by the contraction force F a of the resin package 2.
- the falling portions 40 d and 50 d are drawn in an inclined shape, but these falling portions 40 d and 50 d are non-inclined perpendicular to the bottom surface 2 b of the resin package 2. It may be. The same applies to rising portions 40 e and 50 e described later with reference to FIG.
- FIG. 15 shows a semiconductor device A f according to the seventh embodiment of the present invention.
- the semiconductor device Af is different from the above-described semiconductor device Af in that a cup portion 43 is formed in a part of the first internal terminal 4a, and the light emitting element 1 is bonded to a bottom portion 43b.
- the configuration is different from e.
- the cup part 43 has a falling part 40 connecting the horizontal part 40 a near the first side surface 2 c of the resin package 2 and the bottom part 43 b of the cup part 43 to which the light emitting element 1 is bonded. have d.
- the basic bending configuration of the first and second internal terminals 4a and 5a is common to the semiconductor device Ae described above. Similar effects can be expected.
- the efficiency of irradiating light to a desired area can be increased by reflecting light by the concave surface 43a of the cup portion 43, and the filling material 75 Filling work can also be facilitated.
- FIG. 16 shows a semiconductor device Ag according to an eighth embodiment of the present invention.
- the first and second internal terminals 4a and 5a each have a direction opposite to the bending direction of the first and second internal terminals of the semiconductor device Ae described above. It is bent in a crank shape. More specifically, the first and second internal terminals 4 a and 5 a of the semiconductor device Ag are connected to the horizontal portion near the first and second side surfaces 2 c and 2 d of the resin package 2. It has rising portions 40 e, 50 e extending upward from 40 a, 50 a, and horizontal portions 40 c, 50 e extending from these rising portions 40 e, 50 e. The light emitting element 1 and the second end of the wire W are bonded to c.
- the semiconductor device Ah has a configuration in which the resin 76 is filled in the resin package 2 and the light emitting element 1 and the wire W are entirely wrapped by the resin 76. .
- the resin 76 is, for example, a transparent silicone rubber.
- the resin package 2 receives the contraction force when the resin package 2 thermally contracts, so that the contraction force does not directly reach each part of the light emitting element 1 and the wire W. be able to. Therefore, the effect of preventing the wire W from breaking can be further enhanced.
- a light-receiving element can be used instead of a light-emitting element as a semiconductor chip, and for example, a light-emitting device that emits light in a specific wavelength region such as visible light or infrared light other than visible light. Or as a light receiving device for sensing the light.
- a resin package for example, a resin that blocks visible light and transmits only infrared light can be used.
- the semiconductor device according to the present invention can be configured as a photointerrupter.
- a semiconductor chip other than a light emitting element and a light receiving element can be used.
- the first internal terminal to which the semiconductor chip is bonded is not bent, and only the second internal terminal to which the second end of the wire is bonded is in the thickness direction of the resin package. It can also be bent.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99918313A EP1081761A4 (en) | 1998-05-29 | 1999-04-30 | SEMICONDUCTOR DEVICE |
US09/701,239 US6603148B1 (en) | 1998-05-29 | 1999-04-30 | Semiconductor device |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/149580 | 1998-05-29 | ||
JP14958598A JP3908383B2 (ja) | 1998-05-29 | 1998-05-29 | 半導体装置 |
JP10/149585 | 1998-05-29 | ||
JP14958498A JP3967459B2 (ja) | 1998-05-29 | 1998-05-29 | 半導体装置 |
JP10/149584 | 1998-05-29 | ||
JP14958098A JP3808627B2 (ja) | 1998-05-29 | 1998-05-29 | 面実装型半導体装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999063594A1 true WO1999063594A1 (fr) | 1999-12-09 |
Family
ID=27319787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/002356 WO1999063594A1 (fr) | 1998-05-29 | 1999-04-30 | Dispositif a semi-conducteurs |
Country Status (6)
Country | Link |
---|---|
US (1) | US6603148B1 (ja) |
EP (1) | EP1081761A4 (ja) |
KR (1) | KR100372945B1 (ja) |
CN (1) | CN1233039C (ja) |
TW (1) | TW414924B (ja) |
WO (1) | WO1999063594A1 (ja) |
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EP1162669A2 (en) * | 2000-06-09 | 2001-12-12 | SANYO ELECTRIC Co., Ltd. | Light irradiating device, manufacturing method thereof, and lighting apparatus using the light irradiating device |
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- 1999-04-30 US US09/701,239 patent/US6603148B1/en not_active Expired - Lifetime
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---|---|---|---|---|
EP1162669A2 (en) * | 2000-06-09 | 2001-12-12 | SANYO ELECTRIC Co., Ltd. | Light irradiating device, manufacturing method thereof, and lighting apparatus using the light irradiating device |
EP1162669A3 (en) * | 2000-06-09 | 2006-07-05 | SANYO ELECTRIC Co., Ltd. | Light irradiating device, manufacturing method thereof, and lighting apparatus using the light irradiating device |
Also Published As
Publication number | Publication date |
---|---|
TW414924B (en) | 2000-12-11 |
CN1303520A (zh) | 2001-07-11 |
EP1081761A4 (en) | 2006-08-09 |
CN1233039C (zh) | 2005-12-21 |
KR20010071309A (ko) | 2001-07-28 |
EP1081761A1 (en) | 2001-03-07 |
US6603148B1 (en) | 2003-08-05 |
KR100372945B1 (ko) | 2003-02-25 |
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