JP5273423B2 - 窒化物半導体発光素子の製造方法 - Google Patents
窒化物半導体発光素子の製造方法 Download PDFInfo
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- JP5273423B2 JP5273423B2 JP2006211250A JP2006211250A JP5273423B2 JP 5273423 B2 JP5273423 B2 JP 5273423B2 JP 2006211250 A JP2006211250 A JP 2006211250A JP 2006211250 A JP2006211250 A JP 2006211250A JP 5273423 B2 JP5273423 B2 JP 5273423B2
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- emitting structure
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- 150000004767 nitrides Chemical class 0.000 title claims description 164
- 239000004065 semiconductor Substances 0.000 title claims description 85
- 238000004519 manufacturing process Methods 0.000 title claims description 52
- 239000000758 substrate Substances 0.000 claims description 99
- 238000000034 method Methods 0.000 claims description 78
- 239000000853 adhesive Substances 0.000 claims description 47
- 230000001070 adhesive effect Effects 0.000 claims description 47
- 239000000463 material Substances 0.000 claims description 43
- 229920000642 polymer Polymers 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 12
- 229910052594 sapphire Inorganic materials 0.000 claims description 9
- 239000010980 sapphire Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims description 7
- 238000004528 spin coating Methods 0.000 claims description 6
- 229910010093 LiAlO Inorganic materials 0.000 claims description 4
- 229910020068 MgAl Inorganic materials 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims 2
- 239000010410 layer Substances 0.000 description 96
- 239000013078 crystal Substances 0.000 description 43
- 238000005520 cutting process Methods 0.000 description 23
- 230000035882 stress Effects 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910015363 Au—Sn Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000001534 heteroepitaxy Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
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- C30B29/40—AIIIBV compounds wherein A is B, Al, Ga, In or Tl and B is N, P, As, Sb or Bi
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Description
前記発光構造物に前記溝を形成する段階において、前記幅は、10〜500μmであることが好ましい。
前記予備基板は、サファイア、SiC、Si、MgAl 2 O 4 、MgO、LiAlO 2 及びLiGaO 2 から構成された群より選択された物質から成る基板であることが好ましい。
前記硬化性接着物質は、エポキシ樹脂であることが好ましい。
前記硬化性接着物質を塗布する工程は、スピンコーティングまたはハンドプリンティングによって行われることが好ましい。
前記ポリマー支持層の厚さは、0.01〜5mmであることが好ましい。
前記第1及び第2導電型窒化物半導体層は、それぞれp型及びn型窒化物半導体層であることが好ましい。
15 窒化物単結晶層
21 予備基板
25 窒化物単結晶層
26 硬化性接着物質
26' ポリマー支持層
31 予備基板
35 窒化物発光構造物
35a 第1導電型窒化物半導体層
35b 活性層
35c 第2導電型窒化物半導体層
36 硬化性接着物質
36' ポリマー支持層
41 永久基板
42 導電性接着層
44a 第1電極
44b 第2電極
51 予備基板
55 窒化物発光構造物
55a 第1導電型窒化物半導体層
55b 活性層
55c 第2導電型窒化物半導体層
56 硬化性接着物質
56’ ポリマー支持層
64 電極
Claims (18)
- 予備基板上に第1導電型窒化物半導体層、活性層及び第2導電型窒化物半導体層が順次積層された発光構造物を形成する段階と、
前記発光構造物を個別の発光ダイオードの大きさで区画するように、前記発光構造物を所定の幅で所定の残存厚さを有するよう上面から除去して溝を形成する段階と、
流動性を有する硬化性接着物質を、前記溝を充填し前記発光構造物の上面に所定の厚さを有するように塗布し、その後前記硬化性接着物質を硬化させることにより前記発光構造物を支持するポリマー支持層を形成する段階と、
前記溝の残存厚さで前記発光構造物が分離していない状態で、前記予備基板の下面にレーザーを照射し前記予備基板から前記発光構造物を分離する段階と、
前記発光構造物の分離された面を接合面として、前記発光構造物と導電性を有する永久基板とを接合する段階と、
前記発光構造物から前記ポリマー支持層を除去する段階と、
前記永久基板の下面と前記発光構造物の上面にそれぞれ第1及び第2電極を形成する段階とを有し、
前記予備基板から前記発光構造物を分離する段階において、前記発光構造物の前記残存厚さの部分はレーザーの照射による分解により分離し前記個別の発光ダイオードの大きさで自動的に分離されることを特徴とする窒化物半導体発光素子の製造方法。 - 前記発光構造物に前記溝を形成する段階において、前記発光構造物の残存厚さは、5nm〜500nmであることを特徴とする請求項1に記載の窒化物半導体発光素子の製造方法。
- 前記発光構造物に前記溝を形成する段階において、前記幅は、10〜500μmであることを特徴とする請求項1又は2に記載の窒化物半導体発光素子の製造方法。
- 前記予備基板は、サファイア、SiC、Si、MgAl2O4、MgO、LiAlO2及びLiGaO2から構成された群より選択された物質から成る基板であることを特徴とする請求項1乃至3のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記硬化性接着物質は、前記発光構造物と接着力を有し、熱硬化性樹脂、紫外線硬化性樹脂及び自然硬化性樹脂から構成された群より選択された少なくとも一種であることを特徴とする請求項1乃至4のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記硬化性接着物質は、エポキシ樹脂であることを特徴とする請求項1乃至5のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記硬化性接着物質を塗布する工程は、スピンコーティングまたはハンドプリンティングによって行われることを特徴とする請求項1乃至6のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記ポリマー支持層の厚さは、0.01〜5mmであることを特徴とする請求項1乃至7のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記第1及び第2導電型窒化物半導体層は、それぞれp型及びn型窒化物半導体層であることを特徴とする請求項1乃至8のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 予備基板上に第1導電型窒化物半導体層、活性層及び第2導電型窒化物半導体層が順次に積層された発光構造物を形成する段階と、
前記発光構造物を個別の発光ダイオードの大きさで区画するように、前記発光構造物を所定の幅で所定の残存厚さを有するよう上面から除去して溝を形成する段階と、
前記第2導電型窒化物半導体層上に電極を形成する段階と、
流動性を有する硬化性接着物質を、前記溝を充填し前記発光構造物の上面に所定の厚さを有するように塗布し、その後前記硬化性接着物質を硬化させることにより前記発光構造物を支持するポリマー支持層を形成する段階と、
前記溝の残存厚さで前記発光構造物が分離していない状態で、前記予備基板の下面にレーザーを照射し前記予備基板から前記発光構造物を分離する段階と、
前記発光構造物から前記ポリマー支持層を除去する段階とを有し、
前記予備基板から前記発光構造物を分離する段階において、前記発光構造物の前記残存厚さの部分はレーザーの照射による分解により分離し前記個別の発光ダイオードの大きさで自動的に分離されることを特徴とする窒化物半導体発光素子の製造方法。 - 前記発光構造物に前記溝を形成する段階において、前記発光構造物の残存厚さは、5nm〜500nmであることを特徴とする請求項10に記載の窒化物半導体発光素子の製造方法。
- 前記発光構造物に前記溝を形成する段階において、前記幅は、10〜500μmであることを特徴とする請求項10又は11に記載の窒化物半導体発光素子の製造方法。
- 前記予備基板は、サファイア、SiC、Si、MgAl2O4、MgO、LiAlO2及びLiGaO2から構成された群より選択された物質から成る基板であることを特徴とする請求項10乃至12のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記硬化性接着物質は、前記発光構造物と接着力を有し、熱硬化性樹脂、紫外線硬化性樹脂及び自然硬化性樹脂から構成された群より選択された少なくとも1種であることを特徴とする請求項10乃至13のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記硬化性接着物質は、エポキシ樹脂であることを特徴とする請求項10乃至14のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記硬化性接着物質を塗布する工程は、スピンコーティングまたはハンドプリンティングにより行われることを特徴とする請求項10乃至15のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記ポリマー支持層の厚さは、0.01〜5mmであることを特徴とする請求項10乃至16のいずれか一項に記載の窒化物半導体発光素子の製造方法。
- 前記発光構造物を形成する段階を、900度から1200度の温度で実行し、
前記予備基板から前記発光構造物を分離する段階を、常温で実行することを特徴とする請求項1又は10に記載の窒化物半導体発光素子の製造方法。
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |