KR100879814B1 - Sic 디바이스용의 솔더링 가능한 탑 메탈 - Google Patents
Sic 디바이스용의 솔더링 가능한 탑 메탈 Download PDFInfo
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- KR100879814B1 KR100879814B1 KR1020077009758A KR20077009758A KR100879814B1 KR 100879814 B1 KR100879814 B1 KR 100879814B1 KR 1020077009758 A KR1020077009758 A KR 1020077009758A KR 20077009758 A KR20077009758 A KR 20077009758A KR 100879814 B1 KR100879814 B1 KR 100879814B1
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- South Korea
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- passivation layer
- solderable contact
- solderable
- top surface
- contact
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 title description 28
- 239000002184 metal Substances 0.000 title description 28
- 238000002161 passivation Methods 0.000 claims abstract description 96
- 229910000679 solder Inorganic materials 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 30
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 29
- 229910052709 silver Inorganic materials 0.000 claims description 27
- 239000004332 silver Substances 0.000 claims description 27
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 12
- 239000004642 Polyimide Substances 0.000 claims description 9
- 229920001721 polyimide Polymers 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 3
- -1 Contacts Inorganic materials 0.000 abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
Description
Claims (20)
- 최상면을 갖는 실리콘 카바이드 기판과;상기 기판의 상기 최상면 위의 적어도 하나의 파워 전극과;상기 파워 전극의 외부 주변 에지를 둘러싸며 상기 기판의 상기 최상면 위에 있는 페시베이션층과; 그리고상기 파워 전극의 최상면의 일부에 배치된 솔더링 가능한 콘택을 포함하여 이루어지며,상기 솔더링 가능한 콘택은, 상기 솔더링 가능한 콘택 및 상기 페시베이션층의 인접하는 측면들이 갭을 형성하도록 상기 페시베이션층으로부터 소정거리 이격되며, 상기 갭은 상기 파워 전극의 최상면까지 확장되는 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 솔더링 가능한 콘택의 최상면 및 측면들은, 솔더 연결(solder connection)에 대해 전부 노출되는 것을 특징으로 하는 반도체 디바이스.
- 제 2 항에 있어서,상기 솔더링 가능한 콘택은 은을 포함하는 콘택이며, 솔더링 이후에, 상기 솔더링 가능한 콘택의 전체 최상면 및 측면들은 솔더 합금으로 완전히 변환되는 것 을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 갭은 5㎛ 내지 80㎛ 의 폭을 갖는 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 솔더링 가능한 콘택은 은을 포함하는 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 솔더링 가능한 콘택은, 솔더링 가능한 트리메탈이며, 상기 트리메탈의 최상부는 은으로 이루어진 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 페시베이션층은 비정질 실리콘층인 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 페시베이션층은 제 1 페시베이션층이며, 상기 디바이스는 상기 제 1 페 시베이션층 위에 형성된 제 2 페시베이션층을 더 포함하여 이루어진 것을 특징으로 하는 반도체 디바이스.
- 제 8 항에 있어서,상기 제 2 페시베이션층은, 상기 제 2 페시베이션층의 측면이 상기 솔더링 가능한 콘택의 측면과 이웃하도록 확장되며, 이에 의해 상기 갭을 더 정의하는 것을 특징으로 하는 반도체 디바이스.
- 제 9 항에 있어서,상기 솔더링 가능한 콘택의 측면은 상기 기판의 최상면 위로 제 1 높이까지 확장되고, 상기 제 2 페시베이션층의 측면은 상기 기판의 최상면 위로 제 2 높이까지 확장되며, 상기 제 2 높이는 상기 제 1 높이와 동일하거나 또는 상기 제 1 높이보다 더 높은 것을 특징으로 하는 반도체 디바이스.
- 제 8 항에 있어서,상기 제 2 페시베이션층은 광 이미지화 될 수 있는(photo imagable) 폴리이미드층, PSG 산화물층, 및 실리콘 질화물층 중 어느 하나인 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 디바이스는 쇼트키 다이오드이며, 상기 적어도 하나의 파워 전극은 애노드 전극인 것을 특징으로 하는 반도체 디바이스.
- 제 12 항에 있어서,적어도 하나의 가드 링을 포함하는 터미네이션 영역을 더 포함하여 이루어진 것을 특징으로 하는 반도체 디바이스.
- 제 13 항에 있어서,상기 디바이스는 300V 내지 1600V 의 차단 전압을 지원(support)하도록 된 것을 특징으로 하는 반도체 디바이스.
- 제 1 항에 있어서,상기 솔더링 가능한 콘택에 전기적으로 연결되는 도전성 클립 또는 리드프레임을 더 포함하여 이루어진 것을 특징으로 하는 반도체 디바이스.
- 최상면을 갖는 실리콘 카바이드 기판과;상기 기판의 상기 최상면 위의 적어도 하나의 파워 전극과;상기 파워 전극의 외부 주변 에지를 둘러싸며 상기 기판의 상기 최상면 위에 있는 제 1 페시베이션층과;상기 파워 전극의 외부 주변 에지를 둘러싸며 상기 제 1 페시베이션층 위에 있는 제 2 페시베이션층과; 그리고상기 파워 전극의 최상면의 일부에 배치된 솔더링 가능한 콘택을 포함하여 이루어지며,상기 솔더링 가능한 콘택은, 상기 솔더링 가능한 콘택과 상기 제 1 및 제 2 페시베이션층 사이에 갭을 형성하도록 상기 제 1 및 제 2 페시베이션층으로부터 소정거리 이격되는 것을 특징으로 하는 반도체 디바이스.
- 제 16 항에 있어서,상기 갭은 5㎛ 내지 80㎛ 의 폭을 갖는 것을 특징으로 하는 반도체 디바이스.
- 제 16 항에 있어서,상기 제 1 페시베이션층은 비정질 실리콘층이며, 상기 제 2 페시베이션층은 광 이미지화 될 수 있는(photo imagable) 폴리이미드층, PSG 산화물층, 및 실리콘 질화물층 중 어느 하나인 것을 특징으로 하는 반도체 디바이스.
- 제 16 항에 있어서,상기 솔더링 가능한 콘택 및 상기 제 2 페시베이션층의 인접한 측면들은 상기 갭의 일부를 형성하며, 상기 인접한 측면들은 상기 기판의 최상면 위로 동일한 높이로 확장되는 것을 특징으로 하는 반도체 디바이스.
- 제 16 항에 있어서,상기 솔더링 가능한 콘택의 최상면 및 측면들은, 솔더 연결(solder connection)에 대해 전부 노출되며, 상기 솔더링 가능한 콘택은 은을 포함하는 콘택이며, 솔더링 이후에, 상기 솔더링 가능한 콘택의 전체 최상면 및 측면들은 솔더 합금으로 완전히 변환되는 것을 특징으로 하는 반도체 디바이스.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US62075604P | 2004-10-21 | 2004-10-21 | |
US60/620,756 | 2004-10-21 | ||
US11/255,021 | 2005-10-20 | ||
US11/255,021 US7394158B2 (en) | 2004-10-21 | 2005-10-20 | Solderable top metal for SiC device |
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Publication Number | Publication Date |
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KR20070083857A KR20070083857A (ko) | 2007-08-24 |
KR100879814B1 true KR100879814B1 (ko) | 2009-01-22 |
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KR1020077009758A KR100879814B1 (ko) | 2004-10-21 | 2005-10-21 | Sic 디바이스용의 솔더링 가능한 탑 메탈 |
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US (2) | US7394158B2 (ko) |
EP (1) | EP1810338A4 (ko) |
JP (1) | JP5004800B2 (ko) |
KR (1) | KR100879814B1 (ko) |
CN (1) | CN101740382B (ko) |
TW (1) | TWI278090B (ko) |
WO (1) | WO2006047382A2 (ko) |
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TW200620612A (en) | 2006-06-16 |
EP1810338A2 (en) | 2007-07-25 |
EP1810338A4 (en) | 2011-02-23 |
WO2006047382A9 (en) | 2009-12-17 |
JP2008518445A (ja) | 2008-05-29 |
WO2006047382A2 (en) | 2006-05-04 |
WO2006047382A3 (en) | 2007-05-31 |
KR20070083857A (ko) | 2007-08-24 |
US9496421B2 (en) | 2016-11-15 |
TWI278090B (en) | 2007-04-01 |
CN101740382A (zh) | 2010-06-16 |
JP5004800B2 (ja) | 2012-08-22 |
US20080286968A1 (en) | 2008-11-20 |
US7394158B2 (en) | 2008-07-01 |
CN101740382B (zh) | 2013-09-04 |
US20060086939A1 (en) | 2006-04-27 |
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