US20040195581A1 - Substrate for light emitting diodes - Google Patents
Substrate for light emitting diodes Download PDFInfo
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- US20040195581A1 US20040195581A1 US10/823,594 US82359404A US2004195581A1 US 20040195581 A1 US20040195581 A1 US 20040195581A1 US 82359404 A US82359404 A US 82359404A US 2004195581 A1 US2004195581 A1 US 2004195581A1
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- set plate
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- 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
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- 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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- 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
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- 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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- 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
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Definitions
- the present invention relates to a substrate for a light emitting diode (LED) used in an electronic instrument such as a portable telephone.
- LED light emitting diode
- 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.
- FIG. 15 is a perspective view showing a conventional substrate for an LED.
- the substrate comprises a metal base 51 made of copper or aluminum, an insulation layer of prepreg adhered on the metal base 51 , circuit patterns 53 and 54 made of copper foil on which gold is plated.
- An LED 70 is mounted on the circuit pattern 53 and connected to the circuit pattern 54 by a wire 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 of metal bases 61 made of copper, an insulation member 63 between the metal bases 61 , insulation layers 62 of prepreg adhered to both sides of the metal bases 61 , circuit patterns 64 a and 64 b made of copper foil on which gold is plated.
- An LED 72 is mounted on the circuit pattern 64 a and connected to the circuit pattern 64 b by a wire.
- circuit patterns can not be provided on the underside of the metal base 51 .
- the insulation layer 62 is provided on the underside of the metal 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.
- 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.
- 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.
- 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.
- 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 1 a and 1 b made of copper, each having a cubic shape, a first heat insulation layer 2 of prepreg between the metal bases 1 a and 1 b, a second heat insulation layer 3 of prepreg adhered to the metal bases 1 a and 1 b, a pair of circuit patterns 4 a and 4 b made of copper foil provided on the second insulation layer 3 .
- electrodes 6 a are formed by gold plating, and terminal electrodes 6 b are formed on the underside of metal bases.
- An LED 40 is securely mounted on both the circuit patterns 4 a and 4 b.
- the LED 40 on the circuit patterns 4 a and 4 b is connected to the terminal electrodes 6 a and 6 b by through holes 5 passing through the metal bases 1 a and 1 b.
- 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 of metal base aggregations 101 and first heat insulation layer aggregations 102 are prepared.
- a pair of metal base aggregations 101 and the insulation layer aggregation are adhered by heat compression, thereby providing a set plate 105 .
- a plurality of set plates 105 are arranged between guide plates 106 , interposing a gap 105 a between adjacent set plates 105 .
- the set plates 105 and guide plates 106 are cut along cutting lines 107 , so that a set plate aggregation 108 is provided as shown in FIG. 5.
- a second heat insulation layer aggregation 103 and a circuit pattern layer aggregation 104 are mounted on the set plate aggregation 108 and adhered by heat compression to form an aggregation 109 .
- the circuit pattern layer aggregation 104 is cut by etching to form a plurality of grooves 104 a, thereby separating the aggregation 104 into first and second circuit pattern aggregations 104 F and 104 S. Further, the aggregation 104 is cut to form grooves 104 b corresponding to the gaps 105 a. In addition, a plurality of through holes are formed in both aggregations 104 F and 104 S.
- the substrate of the aggregation 109 is covered by gold plating to form electrodes 6 a and 6 b. At that time, the gold enters through holes to connect the upper and lower electrodes 6 a and 6 b.
- FIG. 10 is a perspective view showing a substrate according to a second embodiment.
- the substrate comprises a pair of metal bases 11 a and 11 b made of copper, a first heat insulation layer 12 of prepreg between the metal bases 11 a and 11 b, a second heat insulation layer 13 of prepreg adhered to the metal bases 11 a and 11 b.
- the insulation layer 13 has a central hole 13 a.
- An LED 20 is mounted on both the metal bases 11 a and 11 b in the central hole 13 a.
- the LED 20 is directly mounted on the metal bases 11 a and 11 b, the heat radiation property is high.
- the manufacturing method is the same as the steps of FIGS. 2 through 5 of the first embodiment.
- a second heat insulation layer aggregation 203 having a plurality of central holes 13 a is mounted on the set plate aggregation 108 and adhered by heat compression to form an aggregation 209 .
- the second heat insulation layer aggregation 203 is cut at the gap 105 a by cutting to form a plurality of grooves, thereby separating the aggregation 203 .
- the guide plates 106 are cut off, and the aggregation 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 30 a and 30 b made of copper, a first heat insulation layer 31 of prepreg between the metal bases 30 a and 30 b, a second heat insulation layer 32 of prepreg adhered to the metal bases 30 a and 30 b, a pair of circuit patterns 33 a and 33 b made of copper foil provided on the second insulation layer 32 .
- An LED 35 is mounted on both the circuit patterns 33 a and 33 b.
- the LED 35 on the circuit patterns 33 a and 33 b is connected to the metal bases 30 a and 30 b by through holes 36 .
- the sizes of the metal bases 30 a and 30 b are different in sectional shape, thereby deflecting the position of the first heat insulation layer from the center line.
- the coefficient of the thermal expansion of the first heat insulation layer 31 in the thickness direction is high, so that the positions of the metal bases 30 a and 30 b are deflected, which may generate stress in the LED 35 .
- a substrate is excellent in heat radiation performance, heat insulation performance and rely can by obtained.
Abstract
A method for manufacturing a plurality or metal core substrates for a surface-mounted light emitting diode includes steps of adhering a pair of metal base plates and a plurality of insulation layers, adhering a pair of metal base plates interposing one of the insulation layers as a first insulation layer to form a set plate, stacking a plurality of set plates between a pair of guide plates, interposing a separation gap between adjacent set plates to form a set plate block, cutting the set plate block in a stacking direction to form a set plate aggregation, securing a second insulation layer to a cut surface of the set plate aggregation, securing a circuit pattern aggregation layer to the second insulation layer to form a metal core substrate aggregation, forming a separation groove on the circuit pattern aggregation layer between adjacent set plates, corresponding to the separation gap, forming a groove along a center line of the set plate to separate the set plate into first and second circuit pattern aggregations, forming electrodes on both sides of the substrate aggregation, separating the guide plates, and cutting off the substrate aggregation into independent substrates.
Description
- 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.
- FIG. 15 is a perspective view showing a conventional substrate for an LED. The substrate comprises a
metal 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 of
metal 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 the
metal base 51. In the substrate of FIG. 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 heat insulation layer 2 of prepreg between themetal bases metal bases circuit patterns circuit 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 of
metal base aggregations 101 and first heatinsulation layer aggregations 102 are prepared. As shown in FIG. 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 of
set 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 in FIG. 5. - Referring to FIG. 6, a second heat
insulation 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 circuit
pattern 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 through holes are formed in bothaggregations - As shown in FIG. 8, the substrate of the
aggregation 109 is covered by gold plating to formelectrodes lower electrodes - Finally, as shown in FIG. 9, the
guide 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 heat insulation layer 12 of prepreg between themetal bases heat 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 heat
insulation 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 heat
insulation 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, the
guide 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 heat insulation layer 31 of prepreg between themetal bases heat 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
heat 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
heat 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 heat 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 (4)
1-5. (canceled).
6. A method for manufacturing a plurality or metal core substrates for a surface-mounted light emitting diode, comprising the steps of:
preparing a plurality of metal base plates and a plurality of insulation layers;
adhering a pair of metal base plates and a plurality of insulation layers;
adhering a pair of metal base plates interposing one of the insulation layers as a first insulation layer to form a set plate;
stacking a plurality of set plates at a position between a pair of guide plates, interposing a separation gap between adjacent set plates to form a set plate block;
cutting the set plate block in a stacking direction along lines corresponding to a predetermined height of the metal base to form a set plate aggregation;
securing a second insulation layer to a cut surface of the set plate aggregation;
securing a circuit pattern aggregation layer to the second insulation layer to form a metal core substrate aggregation;
forming a separation groove on the circuit pattern aggregation layer between adjacent set plates, corresponding to the separation gap;
forming a groove along a center line of the set plate to separate the set plate into first and second circuit pattern aggregations;
forming electrodes on both sides of the substrate aggregation;
separating the guide plates; and
cutting off the substrate aggregation into independent substrates.
7. A method according to claim 6 , further comprising a step of forming a plurality of through-holes in each of the circuit pattern aggregations.
8. A method for manufacturing a plurality or metal core substrates for a surface-mounted light emitting diode, comprising the steps of:
preparing a plurality of metal base plates and a plurality of insulation layers;
adhering a pair of metal base plates interposing one of the insulation layers as a first insulation layer by thermocompression to form a set plate;
stacking a plurality of set plates at a position between a pair of guide plates, interposing a separation gap between adjacent set plates to form a set plate block;
cutting the set plate block in a stacking direction along lines corresponding to a predetermined height of the metal base to form a set plate aggregation;
securing a second insulation layer to a cut surface of the set plate aggregation to form a metal core substrate aggregation;
forming an electrolytic gold plating surface on the metal core substrate aggregation.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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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 |
Applications Claiming Priority (4)
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 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/411,134 Continuation US6740903B2 (en) | 2002-04-15 | 2003-04-11 | Substrate for light emitting diodes |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/234,201 Continuation US20060033112A1 (en) | 2002-04-15 | 2005-09-26 | Substrate for light emitting diodes |
Publications (1)
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US20040195581A1 true US20040195581A1 (en) | 2004-10-07 |
Family
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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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 (1)
Application Number | Title | Priority Date | Filing Date |
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US10/411,134 Expired - Fee Related US6740903B2 (en) | 2002-04-15 | 2003-04-11 | Substrate for light emitting diodes |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US11/234,201 Abandoned US20060033112A1 (en) | 2002-04-15 | 2005-09-26 | Substrate for light emitting diodes |
Country Status (4)
Country | Link |
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US (3) | US6740903B2 (en) |
JP (1) | JP2003309292A (en) |
CN (1) | CN1242496C (en) |
DE (1) | DE10317328B4 (en) |
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US20080303039A1 (en) * | 2007-06-08 | 2008-12-11 | Philips Lumileds Lighting Company, Llc | Mount for a Semiconductor Light Emitting Device |
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US9847462B2 (en) | 2013-10-29 | 2017-12-19 | Point Engineering Co., Ltd. | Array substrate for mounting chip and method for manufacturing the same |
US20150123161A1 (en) * | 2013-11-06 | 2015-05-07 | Starlite Led Inc. | Led package and method of manufacturing the same |
US9502628B2 (en) * | 2013-11-06 | 2016-11-22 | Starlite Led Inc. | LED package and method of manufacturing the same |
US9595650B2 (en) | 2013-11-06 | 2017-03-14 | Starlite Led Inc. | LED package and method of manufacturing the same |
US9666558B2 (en) | 2015-06-29 | 2017-05-30 | Point Engineering Co., Ltd. | Substrate for mounting a chip and chip package using the substrate |
JP2019516248A (en) * | 2016-05-02 | 2019-06-13 | ルミレッズ ホールディング ベーフェー | Thermal block assembly, LED device having the same, and method of manufacturing the thermal block assembly |
Also Published As
Publication number | Publication date |
---|---|
US20030193083A1 (en) | 2003-10-16 |
CN1452255A (en) | 2003-10-29 |
DE10317328A1 (en) | 2003-10-30 |
US20060033112A1 (en) | 2006-02-16 |
DE10317328B4 (en) | 2009-08-06 |
US6740903B2 (en) | 2004-05-25 |
JP2003309292A (en) | 2003-10-31 |
CN1242496C (en) | 2006-02-15 |
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