JP5383143B2 - 半導体基板の作製方法および半導体装置の作製方法 - Google Patents
半導体基板の作製方法および半導体装置の作製方法 Download PDFInfo
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- JP5383143B2 JP5383143B2 JP2008261866A JP2008261866A JP5383143B2 JP 5383143 B2 JP5383143 B2 JP 5383143B2 JP 2008261866 A JP2008261866 A JP 2008261866A JP 2008261866 A JP2008261866 A JP 2008261866A JP 5383143 B2 JP5383143 B2 JP 5383143B2
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- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- 102100040862 Dual specificity protein kinase CLK1 Human genes 0.000 description 1
- 101000749294 Homo sapiens Dual specificity protein kinase CLK1 Proteins 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- LDDQLRUQCUTJBB-UHFFFAOYSA-O azanium;hydrofluoride Chemical compound [NH4+].F LDDQLRUQCUTJBB-UHFFFAOYSA-O 0.000 description 1
- BHVMAFDNFMTYLQ-UHFFFAOYSA-N azanylidyne(azanylidynegermyloxy)germane Chemical compound N#[Ge]O[Ge]#N BHVMAFDNFMTYLQ-UHFFFAOYSA-N 0.000 description 1
- 239000005380 borophosphosilicate glass Substances 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- GPTXWRGISTZRIO-UHFFFAOYSA-N chlorquinaldol Chemical compound ClC1=CC(Cl)=C(O)C2=NC(C)=CC=C21 GPTXWRGISTZRIO-UHFFFAOYSA-N 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000001887 electron backscatter diffraction Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- BIXHRBFZLLFBFL-UHFFFAOYSA-N germanium nitride Chemical compound N#[Ge]N([Ge]#N)[Ge]#N BIXHRBFZLLFBFL-UHFFFAOYSA-N 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 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
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005499 laser crystallization Methods 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- 150000002831 nitrogen free-radicals Chemical class 0.000 description 1
- 235000013842 nitrous oxide Nutrition 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 1
- 229910021342 tungsten silicide Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0214—Manufacture or treatment of multiple TFTs using temporary substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/268—Bombardment with radiation with high-energy radiation using electromagnetic radiation, e.g. laser radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76251—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques
- H01L21/76254—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques with separation/delamination along an ion implanted layer, e.g. Smart-cut, Unibond
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/411—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs characterised by materials, geometry or structure of the substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6704—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device
- H10D30/6713—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device characterised by the properties of the source or drain regions, e.g. compositions or sectional shapes
- H10D30/6715—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device characterised by the properties of the source or drain regions, e.g. compositions or sectional shapes characterised by the doping profiles, e.g. having lightly-doped source or drain extensions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0221—Manufacture or treatment of multiple TFTs comprising manufacture, treatment or patterning of TFT semiconductor bodies
- H10D86/0223—Manufacture or treatment of multiple TFTs comprising manufacture, treatment or patterning of TFT semiconductor bodies comprising crystallisation of amorphous, microcrystalline or polycrystalline semiconductor materials
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- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Recrystallisation Techniques (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
- Thin Film Transistor (AREA)
Description
本実施形態では、バッファ層を介して単結晶半導体層が支持基板に固定されている半導体基板およびその作製方法について説明する。
本実施形態では、図5(A)のレーザビーム122の照射工程に用いることのできるレーザ照射装置について説明する。
図12〜図14を用いて、本実施形態では、半導体基板10を用いた半導体装置の作製方法の一例として、薄膜トランジスタ(TFT)を作製する方法を説明する。複数の薄膜トランジスタを組み合わせることで、各種の半導体装置が形成される。以下、図12〜図14の断面図を用いて、TFTの作製方法を説明する。なお、本実施形態では、nチャネル型のTFTとpチャネル型のTFTを同時に作製する方法を説明する。
実施形態3では、半導体装置の作製方法の一例として、TFTの作製方法を説明したが、半導体膜付き基板に、TFTと共に容量、抵抗など各種の半導体素子を形成することで、高付加価値の半導体装置を作製することができる。本実施形態では、図面を参照しながら半導体装置の具体的な態様を説明する。
実施形態1では、バッファ層を3層とする例を示したが、本実施の形態は、バッファ層を2層とする例を示す。本実施形態では、無アルカリガラス基板(商品名AN100)を用いて複数のシリコン基板を固定した後、複数の単結晶シリコン層を形成する例を図29(A)に示す。
また、無アルカリガラス基板(商品名EAGLE2000(登録商標))を用いて複数のシリコン基板を固定した後、それぞれの単結晶半導体層の間を狭くする例を図29(B)に示す。
図7に示したレーザ照射装置の構成の一例とは異なる例を図30に示す。
本実施の形態では、基板の表面側及び裏面側の両方に加熱した窒素ガスを吹きつけてレーザ照射ができ、且つ、大面積基板を処理できる製造装置の断面図の一例を図31(A)に示す。
図33を用いて、本実施形態では、半導体基板10を用いた半導体装置の作製方法の一例としてトランジスタを作製する方法を説明する。複数の薄膜トランジスタを組み合わせることで、各種の半導体装置が形成される。なお、本実施形態では、nチャネル型のトランジスタとpチャネル型のトランジスタを同時に作製する方法を説明する。
本実施形態では、本発明に係る半導体基板を用いた半導体装置、およびその作製方法について説明する。本実施形態では、本発明に係る半導体基板を用いた半導体装置の一例として、トランジスタについて説明する。複数のトランジスタを組み合わせることで、各種の半導体装置が形成される。以下、図34〜図36の断面図を用いて、トランジスタの作製方法を説明する。なお、本実施形態では、nチャネル型のトランジスタとpチャネル型のトランジスタを同時に作製する方法を説明する。
20 半導体基板
100 支持基板
101 バッファ層
102 絶縁層
104 接合層
110 単結晶半導体基板
112 絶縁層
112a 絶縁膜
112b 絶縁膜
113 損傷領域
114 接合層
115 単結晶半導体層
116 単結晶半導体層
117 単結晶半導体基板
121 イオンビーム
122 レーザビーム
123 矢印
124 窒素ガス
200 マイクロプロセッサ
201 演算回路
202 演算回路制御部
203 命令解析部
204 制御部
205 タイミング制御部
206 レジスタ
207 レジスタ制御部
208 バスインターフェース
209 専用メモリ
210 メモリインターフェース
211 半導体装置
212 アナログ回路部
213 デジタル回路部
214 共振回路
215 整流回路
216 定電圧回路
217 リセット回路
218 発振回路
219 復調回路
220 変調回路
221 RFインターフェース
222 制御レジスタ
223 クロックコントローラ
224 インターフェース
225 中央処理ユニット
226 ランダムアクセスメモリ
227 専用メモリ
228 アンテナ
229 容量部
230 電源管理回路
300 レーザビーム
301 レーザ発振器
302 被処理物
303 ステージ
304 コントローラ
305 光学系
306 気体噴出部
307 窒素ガス
308 気体貯蔵装置
309 気体供給装置
310 気体加熱装置
311 矢印
320 石英窓
321 チューブ
322 チューブ
323 チューブ
331 窓
332 開口部
333 枠
334 空洞
340 セラミックヒータ
341 発熱体
342 電極
343 電極
344 孔
351 シリンドリカルレンズアレイ
352 シリンドリカルレンズアレイ
353 シリンドリカルレンズアレイ
354 シリンドリカルレンズ
355 シリンドリカルレンズ
356 ミラー
357 ダブレットシリンドリカルレンズ
400 基板
401 選択用トランジスタ
402 表示制御用トランジスタ
403 半導体層
404 半導体層
405 走査線
406 信号線
407 電流供給線
408 画素電極
411 電極
412 ゲート電極
413 電極
427 層間絶縁膜
428 隔壁層
429 EL層
430 対向電極
431 対向基板
432 樹脂層
451 チャネル形成領域
452 不純物領域
510 基板
511 半導体層
512 チャネル形成領域
513 不純物領域
522 走査線
523 信号線
524 画素電極
525 TFT
527 層間絶縁膜
528 電極
529 柱状スペーサ
530 配向膜
532 対向基板
533 対向電極
534 配向膜
535 液晶層
550 加熱温度
603 半導体膜
604 半導体膜
606 ゲート絶縁膜
607 電極
608 高濃度不純物領域
609 低濃度不純物領域
610 チャネル形成領域
612 サイドウォール
614 高濃度不純物領域
617 pチャネル型トランジスタ
618 nチャネル型トランジスタ
619 絶縁膜
620 絶縁膜
621 導電膜
622 導電膜
901 携帯電話機
902 表示部
903 操作スイッチ
911 デジタルプレーヤー
912 表示部
913 操作部
914 イヤホン
921 電子ブック
922 表示部
923 操作スイッチ
Claims (8)
- ガラス基板上に単結晶半導体層をバッファ層を介して固定し、
加熱された窒素ガスを吹きつけながら、ガラス基板の歪点以下の温度で前記単結晶半導体層を加熱し、かつ前記単結晶半導体層の一部にレーザ光を照射して、下層に単結晶半導体を残したまま、上層を溶融させることで、前記単結晶半導体層を前記下層の単結晶半導体と結晶方位が揃った単結晶半導体に再単結晶化させる半導体装置の作製方法であって、
前記窒素ガスは、基板の表面側及び裏面側の両方から吹きつけることを特徴とする半導体装置の作製方法。 - ガラス基板上に単結晶半導体層をバッファ層を介して固定し、
加熱された窒素ガスを吹きつけながら、ガラス基板の歪点以下の温度で前記単結晶半導体層を加熱し、かつ前記単結晶半導体層の一部にレーザ光を照射して、深さ方向の層全体を溶融させて前記レーザ光の照射領域と隣接する領域の単結晶半導体と結晶方位が揃った単結晶半導体に再単結晶化させる半導体装置の作製方法であって、
前記窒素ガスは、基板の表面側及び裏面側の両方から吹きつけることを特徴とする半導体装置の作製方法。 - ガラス基板上に単結晶半導体層をバッファ層を介して固定し、
加熱された窒素ガスを吹きつけながら、ガラス基板の歪点以下の温度で前記単結晶半導体層が固定された前記ガラス基板を加熱し、かつ前記単結晶半導体層の一部に線状のレーザ光を照射して、下層の単結晶半導体と結晶方位が揃った単結晶半導体に再単結晶化させ、
前記線状のレーザ光の照射領域における長手方向に直交する方向に前記ガラス基板を移動させて、前記単結晶半導体層を再単結晶化させ、かつ平坦化させる半導体装置の作製方法であって、
前記窒素ガスは、基板の表面側及び裏面側の両方から吹きつけることを特徴とする半導体装置の作製方法。 - ガラス基板上に単結晶半導体層をバッファ層を介して固定し、
加熱された窒素ガスを吹きつけながら、ガラス基板の歪点以下の温度で前記単結晶半導体層が固定された前記ガラス基板を加熱し、かつ前記単結晶半導体層の一部に線状のレーザ光を照射して、深さ方向の層全体を溶融させて、前記レーザ光の照射領域と隣接する領域の単結晶半導体と結晶方位が揃った単結晶半導体に再単結晶化させ、
前記線状のレーザ光の照射領域における長手方向に直交する方向に前記ガラス基板を移動させて、前記単結晶半導体層を再単結晶化させ、かつ平坦化させる半導体装置の作製方法であって、
前記窒素ガスは、基板の表面側及び裏面側の両方から吹きつけることを特徴とする半導体装置の作製方法。 - 請求項1乃至4のいずれか1項において、
前記再単結晶化とともに前記レーザ光の照射により溶融されていた単結晶部分の欠陥を修復することを特徴とする半導体装置の作製方法。 - 請求項1乃至5のいずれか1項において、
前記支持基板は、無アルカリガラス基板(商品名AN100)、無アルカリガラス基板(商品名EAGLE2000(登録商標))または無アルカリガラス基板(商品名EAGLEXG(登録商標))であることを特徴とする半導体装置の作製方法。 - 請求項1乃至6のいずれか1項において、
前記窒素ガスは、酸素ガスの濃度が30ppm以下であることを特徴とする半導体装置の作製方法。 - 請求項1乃至7のいずれか1項において、
前記窒素ガスは、酸素ガスの濃度が30ppb以下であることを特徴とする半導体装置の作製方法。
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