WO2012050110A1 - Ledモジュール - Google Patents
Ledモジュール Download PDFInfo
- Publication number
- WO2012050110A1 WO2012050110A1 PCT/JP2011/073386 JP2011073386W WO2012050110A1 WO 2012050110 A1 WO2012050110 A1 WO 2012050110A1 JP 2011073386 W JP2011073386 W JP 2011073386W WO 2012050110 A1 WO2012050110 A1 WO 2012050110A1
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- WIPO (PCT)
- Prior art keywords
- led module
- led chip
- led
- submount substrate
- module according
- Prior art date
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- 229920005989 resin Polymers 0.000 claims abstract description 96
- 239000011347 resin Substances 0.000 claims abstract description 96
- 239000000758 substrate Substances 0.000 claims abstract description 94
- 239000004065 semiconductor Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 29
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- 235000014676 Phragmites communis Nutrition 0.000 claims 1
- 239000012466 permeate Substances 0.000 claims 1
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/44—Semiconductor devices having potential barriers 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 coatings, e.g. passivation layer or anti-reflective coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers 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 having potential barriers 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
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- H—ELECTRICITY
- 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
- H01L2224/48225—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 non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—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 non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- 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
- H01L2224/48257—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 die pad of the item
-
- H—ELECTRICITY
- 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
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/44—Semiconductor devices having potential barriers 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 coatings, e.g. passivation layer or anti-reflective coating
- H01L33/46—Reflective coating, e.g. dielectric Bragg reflector
Definitions
- the present invention relates to an LED module including an LED chip as a light source.
- FIG. 33 shows an example of a conventional LED module (see, for example, Patent Document 1).
- an LED chip 902 is mounted on a substrate 901.
- the LED chip 902 is surrounded by a frame-shaped reflector 905.
- a space surrounded by the reflector 905 is filled with a sealing resin 906.
- the LED chip 902 includes a submount substrate 903 made of Si and a semiconductor layer 904 stacked on the submount substrate 903.
- the semiconductor layer 904 is electrically connected to the substrate 901 through the submount substrate 903.
- Si which is the material of the submount substrate 903
- Si easily absorbs, for example, blue light emitted from the semiconductor layer 904. For this reason, out of the light emitted from the semiconductor layer 904, the light traveling to the submount substrate 903 is absorbed by the submount substrate 903. Therefore, high brightness of the LED module 900 has been hindered.
- the present invention has been conceived under the circumstances described above, and an object thereof is to provide an LED module capable of achieving high brightness.
- the LED module provided by the present invention includes a submount substrate made of Si, one or more LED chips having a semiconductor layer stacked on the submount substrate, and the semiconductor layer among the submount substrates stacked. And an opaque resin that covers at least a part of the side surface connected to the formed surface and does not transmit light from the semiconductor layer.
- the opaque resin is white.
- the opaque resin covers all of the side surfaces of the submount substrate and exposes the semiconductor layer.
- a Zener diode is formed on the submount substrate to avoid applying an excessive reverse voltage to the semiconductor layer.
- the semiconductor layer emits blue light or green light.
- a substrate having a base material and a wiring pattern is further provided, and the LED chip is mounted on the substrate.
- two wires for connecting the submount substrate and the wiring pattern are provided, and the opaque resin is formed from the side surface of the submount substrate and the wires, the wiring pattern, and the like. It is provided in a region that does not reach the joint portion.
- one wire for connecting the submount substrate and the wiring pattern is provided, and the surface of the submount substrate opposite to the surface on which the semiconductor layer is laminated is provided.
- the surface and the wiring pattern are conductively bonded, and the opaque resin is provided in a region that does not reach the bonding portion between the wire and the wiring pattern from the side surface of the submount substrate.
- two electrode pads are formed on the surface of the submount substrate opposite to the surface on which the semiconductor layer is laminated, and these electrode pads are Conductive bonding is made with the wiring pattern.
- a reflector attached to the substrate and having a reflective surface surrounding the LED chip, and a sealing resin that covers the LED chip and transmits light from the LED chip And further.
- a sealing resin which is formed on the substrate and covers the LED chip and transmits light from the LED chip is further provided.
- a plurality of leads are provided, and the LED chip is mounted on one of the plurality of leads.
- two wires for connecting the submount substrate and the plurality of leads are provided, and the opaque resin is formed from the side surface of the submount substrate by the wires and the plurality of wires. It is provided in a region that does not reach the joint with the lead.
- a wire for connecting the submount substrate and the plurality of leads is provided, and a side of the submount substrate opposite to the surface on which the semiconductor layer is laminated is provided.
- the surface and one of the plurality of leads are conductively joined, and the opaque resin is provided in a region that does not reach the joint between the wire and the plurality of leads from the side surface of the submount substrate. .
- two electrode pads are formed on the surface of the submount substrate opposite to the surface on which the semiconductor layer is laminated, and these electrode pads are Conductive bonding is performed with a plurality of leads.
- a reflector that covers at least a part of each of the plurality of leads and has a reflective surface surrounding the LED chip; And a sealing resin that covers the LED chip and transmits light from the LED chip.
- each of the plurality of leads and the LED chip are covered, and a sealing resin that transmits light from the LED chip is further provided.
- two leads are provided, the LED chip is mounted on the tip of one of the leads, and the submount substrate and the tip of the other lead are mounted.
- a wire for conducting is bonded, covers the tip of the two leads and the LED chip, and has a lens that transmits light from the LED chip and enhances the directivity of light from the LED chip.
- a sealing resin is provided.
- the tip of the one lead is formed with a cup portion on which the LED chip is mounted on the bottom surface, and the portion of the bottom surface not covered with the LED chip is It is covered with the opaque resin.
- the above-mentioned two LED chips and an additional LED chip in which one surface is an electrode surface that is conductively connected, and a wire is connected to the surface facing the one surface.
- the opaque resin exposes the additional LED chip.
- one of the two LED chips emits blue light, the other emits green light, and the additional LED chip emits red light.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2.
- FIG. 6 is a sectional view taken along line IV-IV in FIG. 5.
- FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8.
- FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. It is sectional drawing which shows the LED module based on 5th Embodiment of this invention. It is sectional drawing which shows the LED module based on 6th Embodiment of this invention. It is a perspective view which shows the LED module based on 7th Embodiment of this invention. It is a top view which shows the LED module of FIG.
- FIG. 17 is a sectional view taken along line XVII-XVII in FIG. 16.
- FIG. 21 is a cross-sectional view taken along line XXI-XXI in FIG. 20. It is sectional drawing which shows the LED module based on 11th Embodiment of this invention. It is sectional drawing which shows the LED module based on 12th Embodiment of this invention. It is a top view which shows the LED module based on 13th Embodiment of this invention. It is a bottom view which shows the LED module of FIG. FIG.
- FIG. 25 is a sectional view taken along line XXVI-XXVI in FIG. 24.
- FIG. 25 is a cross-sectional view taken along line XXVII-XXVII in FIG. 24. It is a top view which shows the LED module based on 14th Embodiment of this invention.
- FIG. 29 is a sectional view taken along line XXIX-XXIX in FIG. 28.
- FIG. 29 is a cross-sectional view taken along line XXX-XXX in FIG. 28.
- It is a perspective view which shows the LED module based on 15th Embodiment of this invention.
- FIG. 32 is a sectional view taken along line XXII-XXXII in FIG. 31. It is sectional drawing which shows an example of the conventional LED module.
- the LED module 101 of this embodiment includes a substrate 300, an LED chip 200, two wires 500, a white resin 280, a reflector 600, and a sealing resin 700.
- the sealing resin 700 is omitted in FIGS. 1 and 2.
- the substrate 300 includes a base material 310 and a wiring pattern 320 formed on the base material 310.
- the base material 310 has a rectangular shape and is made of, for example, a glass epoxy resin.
- the wiring pattern 320 is made of, for example, a metal such as Cu or Ag, and has bonding portions 321 and 322, detour portions 323 and 324, and mounting terminals 325 and 326.
- the bonding parts 321 and 322 are formed on the upper surface of the base material 310.
- the detour portions 323 and 324 are connected to the bonding portions 321 and 322 and are formed on both side surfaces of the base material 310.
- the mounting terminals 325 and 326 are formed on the lower surface of the base 310 and are connected to the detour portions 323 and 324.
- the mounting terminals 325 and 326 are used for mounting the LED module 101 on, for example, a circuit board.
- the LED chip 200 has a structure having a submount substrate 210 made of Si and a semiconductor layer 220 in which an n-type semiconductor layer, an active layer, and a p-type semiconductor layer made of, for example, a GaN-based semiconductor are stacked.
- a submount substrate 210 made of Si and a semiconductor layer 220 in which an n-type semiconductor layer, an active layer, and a p-type semiconductor layer made of, for example, a GaN-based semiconductor are stacked.
- two electrode pads 230 (230A, 230B) are formed on the semiconductor layer 220 on the submount substrate 210 side. These electrode pads 230 are bonded to a wiring pattern (not shown) formed on the submount substrate 210 by a conductive paste 231 and bumps 234.
- the submount substrate 210 is bonded to the bonding part 321 with an insulating paste 251.
- Two electrodes (not shown) are formed on the submount substrate 210.
- each of the two wires 500 is bonded to these electrodes, and the LED chip 200 is configured as a so-called two-wire type.
- the other end of one wire 500 is bonded to the bonding portion 321, and the other end of the other wire 500 is bonded to the bonding portion 322.
- a Zener diode (not shown) for preventing an excessive reverse voltage from being applied to the semiconductor layer 220 is formed in the submount substrate 210.
- the white resin 280 is made of a white resin material that does not transmit light from the LED chip 200 and corresponds to an example of an opaque resin in the present invention.
- the white resin 280 covers all of the side surfaces of the submount substrate 210.
- the semiconductor layer 220 is not covered with the white resin 280.
- the white resin 280 surrounds the LED chip 200 in a plan view, and the outer peripheral edge of the white resin 280 extends from the bonding portion between the wire 500 and the bonding portions 321 and 322. Retracted slightly to the side. For this reason, the wire 500 is not covered with the white resin 280.
- the reflector 600 is made of white resin, for example, and has a frame shape surrounding the LED chip 200.
- a reflecting surface 601 is formed on the reflector 600.
- the reflective surface 601 surrounds the LED chip 200.
- the reflective surface 601 is inclined so as to be farther from the LED chip 200 in a direction perpendicular to the thickness direction of the substrate 300 as it is separated from the substrate 300 in the thickness direction of the substrate 300. .
- the sealing resin 700 covers the LED chip 200 and fills the space surrounded by the reflective surface 601.
- the sealing resin 700 is made of, for example, a material obtained by mixing a phosphor material into a transparent epoxy resin. This phosphor material emits yellow light when excited by blue light emitted from the semiconductor layer 220 of the LED chip 200, for example.
- the LED module 101 emits white light by mixing these blue light and yellow light.
- a material that emits red light and a material that emits green light when excited by blue light may be used as the phosphor material.
- the semiconductor layer 220 is bonded to the submount substrate 210.
- the reflector 600 is formed on the substrate 300.
- the LED chip 200 is mounted on the substrate 300.
- a wire 500 is bonded to the LED chip 200.
- the white resin 280 is formed by applying a white liquid resin material.
- the sealing resin 700 the LED module 101 is completed.
- the white resin 280 may be formed before the wire 500 is bonded.
- the LED chip 200 may be mounted after applying a liquid insulating resin material to a region of the bonding portion 321 to which the LED chip 200 is bonded and applying a liquid white resin material around the region.
- the white resin 280 has a higher reflectance than, for example, Si, the light from the semiconductor layer 220 is favorably reflected. Therefore, the ratio of light emitted from the LED chip 200 emitted from the sealing resin 700 can be increased, and the brightness of the LED module 101 can be increased.
- the semiconductor layer 220 that emits blue light is generally made of a GaN-based semiconductor, and is easily damaged by application of a reverse voltage. According to this embodiment, the LED chip 200 that emits blue light can be appropriately protected.
- the direction directly above the LED module 101 can be illuminated more brightly.
- the LED module 102 of the present embodiment is different from the LED module 101 described above in the configuration of the LED chip 200 and the formation range of the white resin 280.
- only one wire 500 is bonded to the submount substrate 210 of the LED chip 200, and the submount substrate 210 is configured as a so-called one-wire type. .
- the wire 500 is connected to the bonding part 322.
- An electrode (not shown) is formed on the lower surface of the submount substrate 210. This electrode is conductively bonded to the bonding portion 321 by the conductive paste 252.
- the white resin 280 has the left side portion of the outer peripheral edge located between the submount substrate 210 and the bonding portion of the wire 500 to the bonding portion 322.
- the other part of the outer peripheral edge of the white resin 280 reaches the reflecting surface 601 of the reflector 600. For this reason, in FIG. 5, the region extending from the LED chip 200 to the reflection surface 601 in the vertical direction and the right direction in the drawing is filled with the white resin 280.
- the brightness of the LED module 102 can be increased. Further, the larger area of the white resin 280 is advantageous for increasing the brightness of the LED module 102.
- the LED module 103 of the present embodiment is different from the LED modules 101 and 102 described above in the configuration of the LED chip 200 and the formation range of the white resin 280.
- two electrode pads 232 are formed on the lower surface of the submount substrate 210 of the LED chip 200. These electrode pads 232 are electrically connected to the two electrode pads 230 via a conduction path (not shown) formed in the submount substrate 210. The two electrode pads 232 are conductively connected to the bonding portions 321 and 322 via the conductive paste 252.
- the submount substrate 210 having such a configuration is referred to as a so-called flip chip type.
- the white resin 280 covers the entire annular region from the submount substrate 210 to the reflection surface 601 of the reflector 600.
- the brightness of the LED module 103 can be increased.
- the area surrounded by the reflective surface 601 is covered with the white resin 280 except for the area occupied by the LED chip 200. Thereby, more light from the semiconductor layer 220 of the LED chip 200 can be reflected. This is suitable for increasing the brightness of the LED module 103.
- the LED module 104 of the present embodiment is different from the LED modules 101, 102, and 103 described above in that the reflector 600 is not provided.
- the sealing resin 700 has a rectangular shape in plan view and is slightly smaller than the substrate 300.
- the sealing resin 700 covers the LED chip 200 and the two wires 500.
- the brightness of the LED module 104 can be increased. Further, the light emitted by the LED chip 200 is emitted from the upper surface and side surfaces of the sealing resin 700. Thereby, the irradiation range of the LED module 104 can be expanded.
- FIG. 13 shows an LED module based on the fifth embodiment of the present invention.
- the LED module 105 of the present embodiment is different from the LED module 104 described above in the configuration of the LED chip 200.
- the submount substrate 210 is configured as a so-called one-wire type shown in FIG.
- the right edge of the outer peripheral edge of the white resin 280 is at a position close to the right edge of the sealing resin 700. According to such an embodiment, it is possible to increase the brightness of the LED module 105.
- FIG. 14 shows an LED module based on the sixth embodiment of the present invention.
- the LED module 106 of the present embodiment is different from the LED modules 104 and 105 described above in the configuration of the LED chip 200.
- the submount substrate 210 is configured as a so-called flip chip type shown in FIG. Both ends of the outer peripheral edge of the white resin 280 are close to both ends of the sealing resin 700. According to such an embodiment, it is possible to increase the brightness of the LED module 106.
- the LED module 107 of this embodiment is different from the LED modules 101 to 103 described above in that the leads 410 and 420 are provided, and the configuration of the reflector 600 is different.
- the leads 41 and 420 are formed by punching and bending a plate made of, for example, Cu or Cu alloy.
- the lead 410 has a bonding part 411, a bypass part 412, and a mounting terminal 413.
- the lead 420 includes a bonding part 421, a bypass part 422, and a mounting terminal 423.
- the LED chip 200 is bonded to the bonding portion 411.
- the bonding part 411 and the mounting terminal 413 are substantially parallel to each other, and are connected to each other by the detour part 412.
- the bonding part 421 and the mounting terminal 423 are substantially parallel to each other and are connected to each other by the detour part 422.
- the LED chip 200 of this embodiment is configured as a two-wire type shown in FIG. One of the two wires 500 is bonded to the bonding portion 411, and the other is bonded to the bonding portion 421.
- the reflector 600 has a frame-shaped part 602 and a base part 603.
- the frame-shaped portion 602 is a portion where the reflective surface 601 is formed, and surrounds the LED chip 200.
- the base portion 603 is connected to the lower side of the frame-like portion 602 and is shaped to be held by the leads 410 and 420.
- the brightness of the LED module 107 can be increased.
- the leads 410 and 420 made of a metal plate are relatively excellent in heat conduction. For this reason, the heat generated from the LED chip 200 can be dissipated out of the LED module 107 more efficiently.
- FIG. 18 shows an LED module according to the eighth embodiment of the present invention.
- the LED module 108 of the present embodiment is different from the LED module 107 described above in the configuration of the submount substrate 210.
- the submount substrate 210 is configured as a one-wire type shown in FIG.
- the right end of the outer peripheral edge of the white resin 280 reaches the reflection surface 601. Also according to such an embodiment, it is possible to increase the brightness of the LED module 108. Further, since the area of the white resin 280 is large, higher luminance can be promoted than the LED module 107.
- FIG. 19 shows an LED module according to the ninth embodiment of the present invention.
- the LED module 109 of this embodiment is different from the LED modules 107 and 108 described above in the configuration of the submount substrate 210.
- the submount substrate 210 is configured as a so-called flip chip type shown in FIG. Both ends of the outer peripheral edge of the white resin 280 reach the reflecting surface 601. Also according to such an embodiment, it is possible to increase the brightness of the LED module 109. Further, since the area of the white resin 280 is large, it is possible to promote higher brightness than the LED module 108.
- the LED module 110 of the present embodiment is different from the LED modules 107 to 109 described above in that the configuration of the leads 410 and 420, the base resin, and the reflector 600 are not provided.
- the lead 410 has a bonding part 411, a mounting terminal 413, an eaves part 414, and an extension part 415
- the lead 420 has a bonding part 421, a mounting terminal 423, an eaves part 424, and an extension. Part 425.
- Most parts of the leads 410 and 420 excluding the bonding parts 411 and 421 and the mounting terminals 413 and 423 are covered with the base resin 701.
- the base resin 701 is made of, for example, a white resin.
- the eaves portion 414 includes a portion extending from the bonding portion 411 toward the lead 420 and a portion extending toward the opposite side of the lead 420.
- the eaves part 424 extends from the bonding part 421 toward the lead 410, and the eaves part 424 extends toward the opposite side of the lead 410.
- the eaves portions 414 and 424 are embedded in the base resin 701.
- the extending portions 415 and 425 extend from the bonding portions 411 and 421, and their tip surfaces are exposed from the base resin 701.
- Ag layers 418 and 428 are formed in the bonding portions 411 and 421.
- the Ag layers 418 and 428 have relatively rough surfaces.
- the sealing resin 700 has a shape and size that match the base resin 701 in a plan view, and covers the LED chip 200 and the wire 500.
- the brightness of the LED module 110 can be increased. Also, the heat radiation from the LED chip 200 can be favorably promoted by the leads 410 and 420. Furthermore, since the eaves portions 414 and 424 and the extending portions 415 and 425 are formed, it is possible to prevent the leads 410 and 420 from falling off the base resin 701.
- FIG. 22 shows an LED module based on the eleventh embodiment of the present invention.
- the LED module 111 of the present embodiment is different from the LED module 110 described above in the configuration of the submount substrate 210.
- the submount substrate 210 is configured as a so-called one-wire type shown in FIG.
- the right edge of the outer peripheral edge of the white resin 280 is at a position close to the right edge of the sealing resin 700. Also according to such an embodiment, it is possible to increase the brightness of the LED module 111.
- FIG. 23 shows an LED module according to the twelfth embodiment of the present invention.
- the LED module 112 of the present embodiment is different from the LED modules 110 and 111 described above in the configuration of the submount substrate 210.
- the submount substrate 210 is configured as a so-called flip chip type shown in FIG. Both ends of the outer peripheral edge of the white resin 280 are close to both ends of the sealing resin 700. Also according to such an embodiment, it is possible to increase the brightness of the LED module 112.
- the LED module 113 of this embodiment is different from the LED modules 101 to 112 described above in that it includes three LED chips 200 and 201.
- the LED module 113 includes leads 430, 431, 432, 433, 434, 435, three LED chips 200, 201, a reflector 600, and a resin package 600. 24 and 25, the sealing resin 700 is omitted for convenience of understanding.
- the leads 430, 431, 432, 433, 434, and 435 are made of, for example, Cu or a Cu alloy, and a part of each is covered with the reflector 600.
- the two LED chips 200 are of the two-wire type shown in FIG. 7, and one emits blue light and the other emits green light.
- the LED chip 201 is an example of an additional LED chip referred to in the present invention, and emits red light.
- the three LED chips 200 and 201 are mounted on the lead 430 in a line.
- two wires 500 bonded to the upper LED chip 200 are bonded to leads 431 and 432.
- the two wires 500 bonded to the lower LED chip 200 in FIG. 24 are bonded to the leads 433 and 434.
- the lower surface of the LED chip 201 is an electrode surface on which an electrode is formed, and is electrically connected to the lead 430.
- One end of a wire 500 is bonded to the upper surface of the LED chip 201.
- the other end of the wire 500 is bonded to the lead 435.
- the white resin 280 is provided around each LED chip 200 and covers the side surface of each submount substrate 210. On the other hand, the LED chip 201 is not covered with the white resin 280.
- Sealing resin 700 is made of, for example, a transparent epoxy resin.
- the phosphor material is not mixed in the sealing resin 700.
- the brightness of the LED module 113 can be increased.
- white light can be emitted by mixing red light, green light, and blue light from the three LED chips 200 and 201.
- light of various color tones can be emitted by individually adjusting the magnitude of the current flowing through the three LED chips 200 and 201.
- the white resin 280 prevents light from being absorbed by the submount substrate 210, but has a low risk of unduly hindering the progress of red light from the LED chip 201.
- the LED module 114 includes a reflector 600, bonding pads 451, 452, 453, 454, 455, 456, 457, 458 and through conductor portions 461, 462, 463, 464, 465, 466, 467, 468. (The through conductor portions 464, 465, and 466 are not shown) and the mounting terminals 471 and 472 are different from the LED module 113 described above.
- the bonding pads 451, 452, 453, 454, 455, 456, 457, and 458 are made of, for example, Ag or Cu.
- Two LED chips 201 are mounted on the bonding pads 451 and 454, respectively.
- Two wires 500 connected to one LED chip 200 are bonded to the bonding pads 452 and 453.
- Two wires 500 connected to the other LED chip 200 are bonded to the bonding pads 455 and 456.
- the LED chip 200 is mounted on the bonding pad 457, and the wire 500 connected to the LED chip 201 is bonded to the bonding pad 458.
- the brightness of the LED module 114 can be increased. Also, white light can be emitted by mixing red light, green light, and blue light from the three LED chips 200 and 201.
- the LED module 115 of the present embodiment includes two leads 441 and 442, an LED chip 200, and a resin package 700, and is configured as a so-called bullet-type LED module as described above. Different from ⁇ 114.
- the leads 441 and 442 have rod shapes extending substantially in parallel with each other, and a part of each is exposed from the resin package 700. These exposed portions are used for mounting the LED module 115 on a circuit board or the like.
- a cup portion 443 and a bonding portion 444 are formed on the lead 441.
- the cup portion 443 is formed near the upper end of the lead 441, and the LED chip 200 is mounted on the bottom surface thereof.
- a portion of the bottom surface that is not covered with the LED chip 200 is covered with the white resin 280.
- the bonding portion 444 is located adjacent to the cup portion 443, and one of the two wires 500 connected to the LED chip 200 is bonded.
- a bonding portion 445 is formed on the upper end of the lead 442.
- the other of the two wires 500 connected to the LED chip 200 is bonded to the bonding unit 445.
- the sealing resin 700 covers the LED chip 200 and a part of each of the leads 441 and 442, and has a columnar part and a dome-shaped part. This dome-shaped portion is a lens 702.
- the lens 702 is for increasing the directivity of light from the LED chip 200.
- the brightness of the LED module 115 can be increased.
- the LED module according to the present invention is not limited to the embodiment described above.
- the specific configuration of each part of the LED module according to the present invention can be changed in various ways.
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Abstract
Description
上記LEDチップを覆い、かつ上記LEDチップからの光を透過させる封止樹脂と、をさらに備えている。
Claims (21)
- Siからなるサブマウント基板、および上記サブマウント基板上に積層された半導体層を有する、1以上のLEDチップと、
上記サブマウント基板のうち上記半導体層が積層された面につながる側面の少なくとも一部を覆っており、かつ上記半導体層からの光を透過しない不透明樹脂と、を備える、LEDモジュール。 - 上記不透明樹脂は、白色である、請求項1に記載のLEDモジュール。
- 上記不透明樹脂は、上記サブマウント基板の側面のすべてを覆っており、かつ上記半導体層を露出させている、請求項1または2に記載のLEDモジュール。
- 上記サブマウント基板には、上記半導体層に過大な逆電圧が印加されることを回避するためのツェナーダイオードが作りこまれている、請求項1ないし3のいずれかに記載のLEDモジュール。
- 上記半導体層は、青色光または緑色光を発する、請求項4に記載のLEDモジュール。
- 基材および配線パターンを有する基板をさらに備えており、
上記LEDチップは、上記基板に搭載されている、請求項1ないし5のいずれかに記載のLEDモジュール。 - 上記サブマウント基板と上記配線パターンとを接続する2つのワイヤを備えており、
上記不透明樹脂は、上記サブマウント基板の上記側面から上記ワイヤと上記配線パターンとの接合部に達しない領域に設けられている、請求項6に記載のLEDモジュール。 - 上記サブマウント基板と上記配線パターンとを接続する1つのワイヤを備えているとともに、
上記サブマウント基板のうち上記半導体層が積層されている面と反対側の面と上記配線パターンとは導通接合されており、
上記不透明樹脂は、上記サブマウント基板の上記側面から上記ワイヤと上記配線パターンとの接合部に達しない領域に設けられている、請求項6に記載のLEDモジュール。 - 上記サブマウント基板のうち上記半導体層が積層されている面と反対側の面には、2つの電極パッドが形成されているとともに、これらの電極パッドが上記配線パターンと導通接合されている、請求項6に記載のLEDモジュール。
- 上記基板に取り付けられており、かつ上記LEDチップを囲む反射面を有するリフレクタと、
上記LEDチップを覆い、かつ上記LEDチップからの光を透過させる封止樹脂と、をさらに備えている、請求項6ないし9のいずれかに記載のLEDモジュール。 - 上記基板上に形成されており、かつ上記LEDチップを覆っているとともに、上記LEDチップからの光を透過させる封止樹脂をさらに備える、請求項6ないし9のいずれかに記載のLEDモジュール。
- 複数のリードを備えており、
上記LEDチップは、上記複数のリードのいずれかに搭載されている、請求項1ないし5のいずれかに記載のLEDモジュール。 - 上記サブマウント基板と上記複数のリードとを接続する2つのワイヤを備えており、
上記不透明樹脂は、上記サブマウント基板の上記側面から上記ワイヤと上記複数のリードとの接合部に達しない領域に設けられている、請求項12に記載のLEDモジュール。 - 上記サブマウント基板と上記複数のリードとを接続する1つのワイヤを備えているとともに、
上記サブマウント基板のうち上記半導体層が積層されている面と反対側の面と上記複数のリードのいずれかとは導通接合されており、
上記不透明樹脂は、上記サブマウント基板の上記側面から上記ワイヤと上記複数のリードとの接合部に達しない領域に設けられている、請求項12に記載のLEDモジュール。 - 上記サブマウント基板のうち上記半導体層が積層されている面と反対側の面には、2つの電極パッドが形成されているとともに、これらの電極パッドが上記複数のリードと導通接合されている、請求項12に記載のLEDモジュール。
- 上記複数のリードの少なくとも一部ずつを覆っており、かつ上記LEDチップを囲む反射面を有するリフレクタと、
上記LEDチップを覆い、かつ上記LEDチップからの光を透過させる封止樹脂と、をさらに備えている、請求項12ないし15のいずれかに記載のLEDモジュール。 - 上記複数のリードの少なくとも一部ずつおよび上記LEDチップを覆っているとともに、上記LEDチップからの光を透過させる封止樹脂をさらに備える、請求項12ないし15のいずれかに記載のLEDモジュール。
- 2つのリードを備えており、
一方の上記リードの先端には、上記LEDチップが搭載されており、
他方の上記リードの先端には、上記サブマウント基板と導通させるワイヤが接合されており、
上記2つのリードの先端および上記LEDチップを覆っているとともに、上記LEDチップからの光を透過させ、かつ上記LEDチップからの光の指向性を高めるレンズを有する封止樹脂を備える、請求項1ないし5のいずれかに記載のLEDモジュール。 - 上記一方のリードの先端には、底面に上記LEDチップが搭載されたカップ部が形成されており、
上記底面のうち上記LEDチップに覆われていない部分は、上記不透明樹脂によって覆われている、請求項18に記載のLEDモジュール。 - 2つの上記LEDチップと、
一方の面が導通接続される電極面とされ、この一方の面と反対側を向く面にワイヤが接続された追加のLEDチップと、を備えており、
上記不透明樹脂は、上記追加のLEDチップを露出させている、請求項1ないし5のいずれかに記載のLEDモジュール。 - 2つの上記LEDチップの一方は青色光を発し、他方は緑色光を発するとともに、
上記追加のLEDチップは、赤色光を発する、請求項20に記載のLEDモジュール。
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JP2012538687A JP6131048B2 (ja) | 2010-10-12 | 2011-10-12 | Ledモジュール |
US16/040,082 US10749079B2 (en) | 2010-10-12 | 2018-07-19 | LED module |
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