US20060033112A1 - Substrate for light emitting diodes - Google Patents
Substrate for light emitting diodes Download PDFInfo
- Publication number
- US20060033112A1 US20060033112A1 US11/234,201 US23420105A US2006033112A1 US 20060033112 A1 US20060033112 A1 US 20060033112A1 US 23420105 A US23420105 A US 23420105A US 2006033112 A1 US2006033112 A1 US 2006033112A1
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- United States
- Prior art keywords
- substrate
- metal bases
- insulation layer
- led
- circuit patterns
- Prior art date
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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
- H01L33/64—Heat extraction or cooling elements
- H01L33/647—Heat extraction or cooling elements the elements conducting electric current to or from the semiconductor body
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- 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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- 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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- 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
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- 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
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- 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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- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- 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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- 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
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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
- H01L33/64—Heat extraction or cooling elements
- H01L33/642—Heat extraction or cooling elements characterized by the shape
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Led Device Packages (AREA)
- Structure Of Printed Boards (AREA)
- Insulated Metal Substrates For Printed Circuits (AREA)
Abstract
A substrate has a pair of metal bases, and a first heat insulation layer disposed between the metal bases. A second heat insulation layer is securely mounted on the metal bases, and a pair of circuit patterns are securely mounted on the second heat insulation layer for mounting an LED.
Description
- This application is a continuation of Ser. No. 10/823,594 filed Apr. 21, 2004, which is a continuation of Ser. No. 10/411,134, filed Apr. 11, 2003, now U.S. Pat. No. 6,740,903.
- The present invention relates to a substrate for a light emitting diode (LED) used in an electronic instrument such as a portable telephone.
- In recent years, it is required that the substrate for the LED has a high heat radiation property, heat-resistant property and high mechanical strength in accordance with the tendencies of a high performance, multifunction, small size of the electronic instrument.
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FIG. 15 is a perspective view showing a conventional substrate for an LED. The substrate comprises ametal base 51 made of copper or aluminum, an insulation layer of prepreg adhered on themetal base 51,circuit patterns LED 70 is mounted on thecircuit pattern 53 and connected to thecircuit pattern 54 by awire 71. - The
metal base 51 has a high heat radiation property. -
FIG. 16 is another conventional perspective view of a double face substrate. The substrate comprises a pair ofmetal bases 61 made of copper, aninsulation member 63 between themetal bases 61,insulation layers 62 of prepreg adhered to both sides of themetal bases 61,circuit patterns LED 72 is mounted on thecircuit pattern 64 a and connected to thecircuit pattern 64 b by a wire. - In the substrate of
FIG. 15 , circuit patterns can not be provided on the underside of themetal base 51. In the substrate ofFIG. 16 , since theinsulation layer 62 is provided on the underside of themetal bases 61, the heat radiation property is insufficient. - An object of the present invention is to provide a substrate having a high heat radiation property.
- According to the present invention, there is provided a substrate comprising a pair of metal bases, a first heat insulation layer disposed between the metal bases, a second heat insulation layer securely mounted on the metal bases, and mounting means for mounting an LED on the substrate.
- The mounting means comprises a pair of circuit patterns securely mounted on the second heat insulation layer, the LED is securely mounted on both the circuit patterns.
- In another aspect, the mounting means comprises a hole formed in the second heat insulation layer to expose surfaces of metal bases, the LED is securely mounted on both the metal bases.
- The substrate further comprises upper and lower electrodes provided on an upper surface of the circuit patterns and on undersides of the metal bases.
- One of the metal bases is different from the other metal base in size of a sectional shape.
- These and other objects and features of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings.
-
FIG. 1 is a perspective view of a substrate according to a first embodiment of the present invention; -
FIGS. 2 and 3 are perspective views showing a preparation of metal bases; -
FIGS. 4 through 9 are perspective views showing a method for manufacturing the substrate; -
FIG. 10 is a perspective view showing a substrate according to a second embodiment; -
FIGS. 11 through 13 are perspective views showing a manufacturing method of the substrate of the second embodiment; -
FIG. 14 is a perspective view showing a substrate according to a third embodiment; -
FIG. 15 is a perspective view showing a conventional substrate for an LED; and -
FIG. 16 is a perspective view showing another substrate. -
FIG. 1 is a perspective view of a substrate according to a first embodiment of the present invention. - The substrate comprises a pair of
metal bases electrical insulation layer 2 of prepreg between themetal bases electrical insulation layer 3 of prepreg adhered to themetal bases circuit patterns second insulation layer 3. On thecircuit patterns electrodes 6 a are formed by gold plating, andterminal electrodes 6 b are formed on the underside of metal bases. AnLED 40 is securely mounted on both thecircuit patterns - The
LED 40 on thecircuit patterns terminal electrodes holes 5 passing through themetal bases - Dimensions of the substrate, for example, are as shown in
FIG. 1 . - Since the metal base is made of copper having a high heat conductivity, and there is not provided a heat insulation layer on the underside of the metal base, the substrate is excellent in heat radiation property. Therefore, an LED device using the substrate is properly used in the LED requiring a high current.
-
FIGS. 2 and 3 are perspective views showing a preparation of metal bases. A plurality ofmetal base aggregations 101 and first heatinsulation layer aggregations 102 are prepared. As shown inFIG. 3 , a pair ofmetal base aggregations 101 and the insulation layer aggregation are adhered by heat compression, thereby providing aset plate 105. - Referring to
FIG. 4 , a plurality ofset plates 105 are arranged betweenguide plates 106, interposing agap 105 a betweenadjacent set plates 105. Next, theset plates 105 andguide plates 106 are cut alongcutting lines 107, so that aset plate aggregation 108 is provided as shown inFIG. 5 . - Referring to
FIG. 6 , a second heatinsulation layer aggregation 103 and a circuitpattern layer aggregation 104 are mounted on theset plate aggregation 108 and adhered by heat compression to form anaggregation 109. - Next, as shown in
FIG. 7 , the circuitpattern layer aggregation 104 is cut by etching to form a plurality ofgrooves 104 a, thereby separating theaggregation 104 into first and secondcircuit pattern aggregations aggregation 104 is cut to formgrooves 104 b corresponding to thegaps 105 a. In addition, a plurality of throughholes 5 are formed in bothaggregations - As shown in
FIG. 8 , the substrate of theaggregation 109 is covered by gold plating to formelectrodes lower electrodes - Finally, as shown in
FIG. 9 , theguide plates 106 are cut off, and theaggregation 109 is separated into unit substrates. -
FIG. 10 is a perspective view showing a substrate according to a second embodiment. - The substrate comprises a pair of
metal bases electrical insulation layer 12 of prepreg between themetal bases electrical insulation layer 13 of prepreg adhered to themetal bases insulation layer 13 has acentral hole 13 a. AnLED 20 is mounted on both themetal bases central hole 13 a. - Since the
LED 20 is directly mounted on themetal bases - The manufacturing method is the same as the steps of
FIGS. 2 through 5 of the first embodiment. - Referring to
FIG. 11 , a second electricalinsulation layer aggregation 203 having a plurality ofcentral holes 13 a is mounted on theset plate aggregation 108 and adhered by heat compression to form anaggregation 209. - Next, as shown in
FIG. 12 , the second heatinsulation layer aggregation 203 is cut at thegap 105 a by cutting to form a plurality of grooves, thereby separating theaggregation 203. - As shown in
FIG. 13 , theguide plates 106 are cut off, and theaggregation 209 is separated into unit substrates. -
FIG. 14 is a perspective view showing a substrate according to a third embodiment of the present invention. - The substrate comprises a pair of
metal bases electrical insulation layer 31 of prepreg between themetal bases electrical insulation layer 32 of prepreg adhered to themetal bases circuit patterns second insulation layer 32. AnLED 35 is mounted on both thecircuit patterns - The
LED 35 on thecircuit patterns metal bases holes 36. - In the substrate of the third embodiment, the sizes of the
metal bases - The coefficient of the thermal expansion of the first
electrical insulation layer 31 in the thickness direction is high, so that the positions of themetal bases LED 35. - However, since the thermal expansion coefficient of the second
electrical insulation layer 32 in the plane direction is small, the metal bases are prevented from deflecting, thereby preventing the generation of the stress in the LED. - Furthermore, since the first
heat insulation layer 31 is eccentric, the influence of thermal expansion of the first electrical insulation layer is reduced. - In accordance with the present invention, a substrate is excellent in heat radiation performance, heat insulation performance and rely can by obtained.
- While the invention has been described in conjunction with preferred specific embodiment thereof, it will be understood that this description is intended to illustrate and not limit the scope of the invention, which is defined by the following claims.
Claims (5)
1. A substrate comprising:
a pair of metal bases;
a first electrical insulation layer disposed between the metal bases;
a second electrical insulation layer securely mounted on the metal bases; and
mounting means for mounting an LED on the substrate.
2. The substrate according to claim 1 wherein the mounting means comprises a pair of circuit patterns securely mounted on the second electrical insulation layer, the LED is securely mounted on both the circuit patterns.
3. The substrate according to claim 1 wherein the mounting means comprises a hole formed in the second electrical insulation layer to expose surfaces of metal bases, the LED is securely mounted on the metal bases.
4. The substrate according to claim 2 further comprising upper and lower electrodes provided on an upper surface of the circuit patterns and on undersides of the metal bases.
5. The substrate according to claim 2 wherein one of the metal bases is different from the other metal base in size of sectional shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/234,201 US20060033112A1 (en) | 2002-04-15 | 2005-09-26 | Substrate for light emitting diodes |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-112645 | 2002-04-15 | ||
JP2002112645A JP2003309292A (en) | 2002-04-15 | 2002-04-15 | Metal core substrate of surface mounting light emitting diode and its manufacturing method |
US10/411,134 US6740903B2 (en) | 2002-04-15 | 2003-04-11 | Substrate for light emitting diodes |
US10/823,594 US20040195581A1 (en) | 2002-04-15 | 2004-04-14 | Substrate for light emitting diodes |
US11/234,201 US20060033112A1 (en) | 2002-04-15 | 2005-09-26 | Substrate for light emitting diodes |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/823,594 Continuation US20040195581A1 (en) | 2002-04-15 | 2004-04-14 | Substrate for light emitting diodes |
Publications (1)
Publication Number | Publication Date |
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US20060033112A1 true US20060033112A1 (en) | 2006-02-16 |
Family
ID=28786681
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/411,134 Expired - Fee Related US6740903B2 (en) | 2002-04-15 | 2003-04-11 | Substrate for light emitting diodes |
US10/823,594 Abandoned US20040195581A1 (en) | 2002-04-15 | 2004-04-14 | Substrate for light emitting diodes |
US11/234,201 Abandoned US20060033112A1 (en) | 2002-04-15 | 2005-09-26 | Substrate for light emitting diodes |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/411,134 Expired - Fee Related US6740903B2 (en) | 2002-04-15 | 2003-04-11 | Substrate for light emitting diodes |
US10/823,594 Abandoned US20040195581A1 (en) | 2002-04-15 | 2004-04-14 | Substrate for light emitting diodes |
Country Status (4)
Country | Link |
---|---|
US (3) | US6740903B2 (en) |
JP (1) | JP2003309292A (en) |
CN (1) | CN1242496C (en) |
DE (1) | DE10317328B4 (en) |
Cited By (5)
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US9018651B2 (en) | 2011-12-15 | 2015-04-28 | Point Engineering Co., Ltd. | Optical device integrated with driving circuit and power supply circuit, method for manufacturing optical device substrate used therein, and substrate thereof |
US9666558B2 (en) | 2015-06-29 | 2017-05-30 | Point Engineering Co., Ltd. | Substrate for mounting a chip and chip package using the substrate |
US9847462B2 (en) | 2013-10-29 | 2017-12-19 | Point Engineering Co., Ltd. | Array substrate for mounting chip and method for manufacturing the same |
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KR101086014B1 (en) | 2011-06-27 | 2011-11-22 | (주)포인트엔지니어링 | Highly heat sink substrate for optical element device and fabricating method thereof |
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CN103904208A (en) * | 2012-12-27 | 2014-07-02 | 宜兴市江旭节能技术有限公司 | Substrate structure |
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Also Published As
Publication number | Publication date |
---|---|
DE10317328A1 (en) | 2003-10-30 |
JP2003309292A (en) | 2003-10-31 |
US20030193083A1 (en) | 2003-10-16 |
DE10317328B4 (en) | 2009-08-06 |
US20040195581A1 (en) | 2004-10-07 |
US6740903B2 (en) | 2004-05-25 |
CN1242496C (en) | 2006-02-15 |
CN1452255A (en) | 2003-10-29 |
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