JP2015144257A - 回路基板およびその製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims description 44
- 229910052751 metal Inorganic materials 0.000 claims abstract description 286
- 239000002184 metal Substances 0.000 claims abstract description 286
- 239000000758 substrate Substances 0.000 claims abstract description 112
- 239000000463 material Substances 0.000 claims abstract description 111
- 238000005219 brazing Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 18
- 230000035882 stress Effects 0.000 description 25
- 238000005530 etching Methods 0.000 description 20
- 239000000919 ceramic Substances 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 15
- 229910052802 copper Inorganic materials 0.000 description 15
- 239000010949 copper Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 238000007747 plating Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000000873 masking effect Effects 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
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- 230000002093 peripheral effect Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000004382 potting Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 229910017944 Ag—Cu Inorganic materials 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910015363 Au—Sn Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- PQIJHIWFHSVPMH-UHFFFAOYSA-N [Cu].[Ag].[Sn] Chemical compound [Cu].[Ag].[Sn] PQIJHIWFHSVPMH-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- JVPLOXQKFGYFMN-UHFFFAOYSA-N gold tin Chemical compound [Sn].[Au] JVPLOXQKFGYFMN-UHFFFAOYSA-N 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 229910000969 tin-silver-copper Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- H—ELECTRICITY
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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
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer connector 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
- H01L2224/32221—Disposition the layer connector 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
- H01L2224/32225—Disposition the layer connector 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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- H01L2224/00—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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- H01L2224/42—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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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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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
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- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/4847—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
- H01L2224/48472—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
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- H01L2224/732—Location after the connecting process
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- H01L2924/1304—Transistor
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- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13091—Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
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Abstract
Description
し、前記第2金属板が前記複数の第1金属板領域と対向するように、前記第2金属板の上面を前記絶縁基板の下面に配置する第2工程と、加熱処理によって、前記第1金属板母材および前記第2金属板を前記絶縁基板に接合させる第3工程と、前記第1金属板母材の上面から前記第1溝の底部までの部分を除去し、互いに間隙を空けて分離された複数の第1金属板を形成する第4工程と、を有する。
図1および図2を参照して本発明の実施形態の回路基板10および電子装置20について説明する。図1は(a)は本発明の実施形態の回路基板10および電子装置20の上面図であり、図1(b)は図1(a)のA−A線での断面図であり、図1(c)は下面図である。また、図2(a)は図1に示す回路基板10および電子装置20における要部を拡大して示す断面図であり、図2(b)は図2(a)の変形例を示す断面図である。
り、回路基板の大きさまたは用いる材料の熱伝導率または強度に応じて選択すればよい。
あればよい。
mである。銅板は、電気抵抗が低く高熱伝導性を有するので、第1金属板2を構成する部材として好ましい。
の側面の下部まで延びており、第1傾斜部においても絶縁基板1と第1金属板2との間に介在して両者を互いに接合させている。
板10を提供することができる。
I(Large Scale Integrated circuit)、IGBT(Insulated Gate Bipolar Transistor)、またはMOS−FET(Metal Oxide Semiconductor - Field Effect Transistor)等の半導体素子である。
次に、図1に示す例の回路基板10の製造方法について、図3(a)〜(e)を用いて説明する。なお、以下の説明において用いる図3〜図7の各図は、製造方法に関する各工程の説明を主としたものであり、第1傾斜部および第2傾斜部を省略している。
。
の接合面側から行って第1溝22aを形成した場合、第1金属板2の高密度配置が可能となる。
次に、図4および図5を参照して本発明の第2の製造方法、ならびに当該製造方法によって製造される回路基板10および電子装置20について説明する。
である。また、第2溝3aの深さは、第2金属板3の厚みにもよるが、例えば、約5〜500μmである。
における第2金属板3との熱膨張差は、さらに等しくなるので、絶縁基板1のクラック発生、又は第1および第2金属板2、3の剥離をさらに抑制することができる。
2・・・第1金属板
2a・・・間隙
3・・・第2金属板
3a・・第2溝
4・・・ろう材
5・・・電子部品
6・・・ボンディングワイヤ
7・・・マスキング
10・・・回路基板
20・・・電子装置
22・・・第1金属板母材
22a・・・第1溝
22A、22B、22C・・・複数の第1金属板領域
Claims (4)
- 絶縁基板と、
該絶縁基板の上面にろう材を介して接合されており、互いに対向し合う側面同士の間に間隙を有して配置された複数の第1金属板とを備えており、
該第1金属板の前記側面は、上下方向の中央部から下端部分に向かって内側に傾斜した第1傾斜部を有しており、
前記ろう材が、前記側面の前記第1傾斜部まで延在していることを特徴とする回路基板。 - 前記第1金属板の前記側面は、前記上下方向の中央部から上端部分に向かって内側に傾斜した第2傾斜部をさらに有していることを特徴とする請求項1に記載の回路基板。
- 絶縁基板と、下面に第1溝を有しており、該第1溝を隔てて配置された複数の第1金属板領域を有する第1金属板母材と、第2金属板と、を準備する第1工程と、
前記第1金属板母材の下面を前記絶縁基板の上面にろう材を介して配置し、前記第2金属板が前記複数の第1金属板領域と対向するように、前記第2金属板の上面を前記絶縁基板の下面にろう材を介して配置する第2工程と、
加熱処理によって、前記第1金属板母材および前記第2金属板を前記絶縁基板に接合させる第3工程と、
前記第1金属板母材の上面から前記第1溝の底部までの部分を除去し、互いに間隙を空けて分離された複数の第1金属板を形成する第4工程と、
を有する回路基板の製造方法。 - 前記第1工程においては、前記第2金属板として、上面に前記第1溝と線対称な形状の第2溝が設けられた第2金属板を準備し、
前記第2工程においては、上面視した際に前記第2溝が前記第1溝と重なって沿うように、前記第2金属板の上面を前記絶縁基板の下面に配置する
ことを特徴とする請求項3に記載の回路基板の製造方法。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110660896A (zh) * | 2019-10-24 | 2020-01-07 | 侯立东 | 一种led封装结构及其封装方法 |
WO2022019242A1 (ja) * | 2020-07-22 | 2022-01-27 | 京セラ株式会社 | 回路基板および回路基板の製造方法 |
Citations (5)
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CN110660896B (zh) * | 2019-10-24 | 2020-11-24 | 福建龙业光电科技有限公司 | 一种led封装结构及其封装方法 |
WO2022019242A1 (ja) * | 2020-07-22 | 2022-01-27 | 京セラ株式会社 | 回路基板および回路基板の製造方法 |
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