JP3784785B2 - 垂直構造窒化ガリウム系発光ダイオードの製造方法 - Google Patents
垂直構造窒化ガリウム系発光ダイオードの製造方法 Download PDFInfo
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- JP3784785B2 JP3784785B2 JP2003270638A JP2003270638A JP3784785B2 JP 3784785 B2 JP3784785 B2 JP 3784785B2 JP 2003270638 A JP2003270638 A JP 2003270638A JP 2003270638 A JP2003270638 A JP 2003270638A JP 3784785 B2 JP3784785 B2 JP 3784785B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 18
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 title description 90
- 229910002601 GaN Inorganic materials 0.000 title description 88
- 239000000758 substrate Substances 0.000 claims description 105
- 239000010410 layer Substances 0.000 claims description 86
- 229910052594 sapphire Inorganic materials 0.000 claims description 63
- 239000010980 sapphire Substances 0.000 claims description 63
- 238000005253 cladding Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 26
- 239000012790 adhesive layer Substances 0.000 claims description 25
- 239000013078 crystal Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 229910052738 indium Inorganic materials 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 7
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 4
- 229910017942 Ag—Ge Inorganic materials 0.000 claims description 4
- 229910015363 Au—Sn Inorganic materials 0.000 claims description 4
- 229910020220 Pb—Sn Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- 239000010944 silver (metal) Substances 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 229910003465 moissanite Inorganic materials 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 nitride compound Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
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Classifications
-
- 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
- H01L33/005—Processes
- H01L33/0093—Wafer bonding; Removal of the growth substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S438/00—Semiconductor device manufacturing: process
- Y10S438/977—Thinning or removal of substrate
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Led Devices (AREA)
Description
22 反射層
24 導電性接着層
25a p型GaNクラッド層
25b 活性層
25c n型GaNクラッド層
25 GaN単結晶発光構造物
27、29 p型コンタクト、n型コンタクト
Claims (8)
- サファイア基板上に、第1導電型GaNクラッド層、活性層及び第2導電型GaNクラッド層が順次に配置された発光構造物を形成する段階と、
前記サファイア基板上に第1導電型GaNクラッド層が0.01−1μm範囲の厚で残留されるよう所望の最終発光ダイオードの大きさに合わせて前記発光構造物を分離する段階と、
前記発光構造物の間に分離された空間が空いた状態で維持されるよう導電性接着層を利用し前記発光構造物の上面に導電性基板を接合する段階と、
前記サファイア基板の下面にレーザービームを照射することにより前記発光構造物から前記サファイア基板を除去する段階と、
前記第1導電型クラッド層の両面のうち前記サファイア基板が除去された面と前記導電性基板が露出した面に第1及び第2コンタクトを各々形成する段階と、
前記分離された発光構造物に合わせて前記導電性基板を切断する段階とを含み、
前記サファイア基板の除去段階は前記レーザービームを照射時に発生される前記発光構造物と前記サファイア基板の界面応力により前記残留した第2導電型GaNクラッド層部分が粉砕され前記発光構造物が前記最終発光ダイオードの大きさに完全に分離される過程を随伴することを特徴とするGaN発光ダイオードの製造方法。 - 前記発光構造物を形成する段階は、前記第2導電型GaNクラッド層上に導電性物質から成る反射層を形成する段階をさらに有することを特徴とする請求項1に記載のGaN発光ダイオードの製造方法。
- 前記反射層は、Au、Ni、Ag、Al及びその合金から成るグループから選択した物質から成ることを特徴とする請求項2に記載のGaN発光ダイオードの製造方法。
- 前記発光構造物の上面に導電性基板を接合する段階は、
前記導電性基板の下面に前記導電性接着層を形成する段階と、
前記導電性基板の前記下面と前記発光構造物の露出した上面とを接合させる段階と、
を有することを特徴とする請求項1に記載のGaN発光ダイオードの製造方法。 - 前記発光構造物の上面に導電性基板を接合する段階は、
前記発光構造物の上面に前記導電性接着層を形成する段階と、
前記導電性基板を前記発光構造物の上面に接合させる段階と,
を有することを特徴とする請求項1に記載のGaN発光ダイオードの製造方法。 - 前記導電性基板は、シリコン、ゲルマニウム、SiC、ZnO、ダイアモンド及びGaAsから成るグループから選択した物質から成ることを特徴とする請求項1に記載のGaN発光ダイオードの製造方法。
- 前記導電性接着層は、Au−Sn、Sn、In、Au−Ag、Ag−In、Ag−Ge、Ag−Cu及びPb−Snから成るグループから選択した物質から成ることを特徴とする請求項1に記載のGaN発光ダイオードの製造方法。
- 前記第1導電型GaNクラッド層はn型不純物のドーピングされたGaN結晶層で、前記第2導電型クラッド層はp型不純物のドーピングされたGaN結晶層であることを特徴とする請求項1に記載のGaN発光ダイオードの製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0035766A KR100483049B1 (ko) | 2003-06-03 | 2003-06-03 | 수직구조 질화갈륨계 발광다이오드의 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004363532A JP2004363532A (ja) | 2004-12-24 |
JP3784785B2 true JP3784785B2 (ja) | 2006-06-14 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003270638A Expired - Fee Related JP3784785B2 (ja) | 2003-06-03 | 2003-07-03 | 垂直構造窒化ガリウム系発光ダイオードの製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6818531B1 (ja) |
JP (1) | JP3784785B2 (ja) |
KR (1) | KR100483049B1 (ja) |
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