JP2010283338A - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP2010283338A JP2010283338A JP2010096566A JP2010096566A JP2010283338A JP 2010283338 A JP2010283338 A JP 2010283338A JP 2010096566 A JP2010096566 A JP 2010096566A JP 2010096566 A JP2010096566 A JP 2010096566A JP 2010283338 A JP2010283338 A JP 2010283338A
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- oxide semiconductor
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- semiconductor film
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- UMJICYDOGPFMOB-UHFFFAOYSA-N zinc;cadmium(2+);oxygen(2-) Chemical compound [O-2].[O-2].[Zn+2].[Cd+2] UMJICYDOGPFMOB-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】酸化物半導体層の上方に設けるゲート電極を形成するとき、酸化物半導体層のパターニングと同時に形成することで、第2のゲート電極の作製に要するプロセス数の増加を削減する。
【選択図】図1
Description
本実施の形態では、上下を2つのゲート電極に挟まれた酸化物半導体膜を用いた薄膜トランジスタを含む半導体装置の作製方法について断面図を用いて説明する。
本実施の形態では、上下を2つのゲート電極に挟まれた酸化物半導体膜を用いた薄膜トランジスタを含む半導体装置の作製方法について実施の形態1とは異なる断面図を用いて説明する。
本実施の形態では、上下を2つのゲート電極に挟まれた酸化物半導体膜を用いた薄膜トランジスタを含む半導体装置の作製方法について実施の形態1、実施の形態2とは異なる断面図を用いて説明する。
本実施の形態では、上下を2つのゲート電極に挟まれた酸化物半導体膜を用いた薄膜トランジスタを含む半導体装置の作製方法について実施の形態1とは異なる断面図を用いて説明する。
本実施の形態では、上下を2つのゲート電極に挟まれた酸化物半導体膜を用いた薄膜トランジスタを含む半導体装置の作製方法について実施の形態2とは異なる断面図を用いて説明する。
本実施の形態では、上下を2つのゲート電極に挟まれた酸化物半導体膜を用いた薄膜トランジスタを含む半導体装置の作製方法について実施の形態3とは異なる断面図を用いて説明する。
本実施の形態では、表示装置について、ブロック図、回路図、各信号等の電位変化を示す波形図、上面図(レイアウト図)等を参照して説明する。
本実施の形態では、上記実施の形態1乃至6のいずれか一で述べた薄膜トランジスタを具備する表示装置として発光表示装置の一例を示す。表示装置の有する表示素子としては、ここではエレクトロルミネッセンスを利用する発光素子を用いて示す。エレクトロルミネッセンスを利用する発光素子は、発光材料が有機化合物であるか、無機化合物であるかによって区別され、前者は有機EL素子、後者は無機EL素子と呼ばれている。
実施の形態1乃至6のいずれか一に示した酸化物半導体膜を用いた薄膜トランジスタを作製し、該薄膜トランジスタを駆動回路、さらには画素部に用いて表示機能を有する液晶表示装置を作製することができる。また、薄膜トランジスタを駆動回路の一部または全体を、画素部と同じ基板上に一体形成し、システムオンパネルを形成することができる。
本実施の形態では、酸化物半導体膜を有する薄膜トランジスタを複数有する半導体装置として電子ペーパーの一例を示す。
実施の形態1乃至6のいずれか一に示す工程により作製される薄膜トランジスタを含む半導体装置は、さまざまな電子機器(遊技機も含む)に適用することができる。
101 ゲート電極
111 ゲート絶縁膜
112 配線層
113 酸化物半導体膜
121 酸化物半導体膜
122 絶縁膜
123 導電層
124 チャネル保護膜
131 酸化物半導体膜
132 ゲート絶縁膜
133 ゲート電極
134 レジストマスク
135 バッファ層
136 チャネル保護膜
141 薄膜トランジスタ
142 樹脂層
143 引き回し配線
144 画素電極
580 基板
581 薄膜トランジスタ
582 引き回し配線
588 電極層
589 球形粒子
595 充填材
596 基板
800 基板
801 画素部
802 走査線駆動回路
803 信号線駆動回路
804 薄膜トランジスタ
820 基板
822 信号線入力端子
823 走査線
824 信号線
827 画素部
828 画素
829 画素TFT
830 保持容量部
831 画素電極
832 容量線
833 コモン端子
835 保護回路
1101 導電層
1102 酸化物半導体膜
1103 導電層
1104 導電層
1105 導電層
1106 開口部
2201 ゲート電極
2202 絶縁膜
2203A ソース電極
2203B ドレイン電極
2204 酸化物半導体膜
2205 絶縁膜
2206 ゲート電極
2301 曲線
2302 曲線
2600 素子基板
2601 対向基板
2602 シール材
2603 素子層
2604 液晶層
2606 偏光板
2607 偏光板
2608 配線回路部
2609 フレキシブル配線基板
2611 反射板
2612 回路基板
2613 光学シート
2700 電子書籍
2701 筐体
2703 筐体
2705 表示部
2707 表示部
2711 綴じ部
2721 電源
2723 操作キー
2725 スピーカ
2912 LED制御回路
4001 基板
4002 画素部
4003 信号線駆動回路
4004 走査線駆動回路
4005 シール材
4006 基板
4008 液晶層
4010 薄膜トランジスタ
4011 薄膜トランジスタ
4013 液晶素子
4015 接続端子電極
4016 端子電極
4018 FPC
4019 異方性導電膜
4020 ゲート絶縁膜
4021 層間絶縁層
4028 引き回し配線
4029 引き回し配線
4030 画素電極層
4031 共通電極層
4032 偏光板
4034 遮光層
4035 スペーサ
4500 基板
4502 画素部
4505 シール材
4506 基板
4507 充填材
4508 層間絶縁層
4509 薄膜トランジスタ
4510 薄膜トランジスタ
4511 発光素子
4512 電界発光層
4513 電極層
4515 接続端子電極
4516 端子電極
4517 電極層
4519 異方性導電膜
4520 隔壁
4521 導電層
4522 導電層
585A 層間絶縁層
585B 層間絶縁層
587A 電極層
587B 電極層
590A 黒色微粒子
590B 白色微粒子
6400 画素
6401 スイッチング用トランジスタ
6402 駆動用トランジスタ
6403 容量素子
6404 発光素子
6405 信号線
6407 電源線
6408 共通電極
7001 薄膜トランジスタ
7002 発光素子
7003 陰極
7004 発光層
7005 陽極
7006 隔壁
7009 引き回し配線
7010 導電膜
7011 薄膜トランジスタ
7012 発光素子
7013 陰極
7014 発光層
7015 陽極
7016 遮蔽膜
7017 層間絶縁層
7019 引き回し配線
7021 薄膜トランジスタ
7022 発光素子
7023 陰極
7024 発光層
7025 陽極
7028 導電膜
7029 引き回し配線
823A 走査線
823B 制御線
9630 筐体
9631 表示部
9633 スピーカ
9635 操作キー
9636 接続端子
9638 マイクロフォン
9672 記録媒体読込部
9676 シャッターボタン
9677 受像部
9680 外部接続ポート
9681 ポインティングデバイス
2910B 発光ダイオード
2910G 発光ダイオード
2910R 発光ダイオード
4003a 信号線駆動回路
4003b 信号線駆動回路
4503a 信号線駆動回路
4504a 走査線駆動回路
4518a FPC
6406A 走査線
6406B 制御線
Claims (10)
- 絶縁表面上に第1の導電層を形成し、第1のパターニングにより第1のゲート電極を形成し、
前記第1のゲート電極上に第1の絶縁膜を形成し、
前記第1の絶縁膜上に第2の導電層を形成し、第2のパターニングにより配線層を形成し、
前記第1の絶縁膜上及び前記配線層上に、酸化物半導体膜と、第2の絶縁膜と、第3の導電層を形成し、第3のパターニングにより、島状の酸化物半導体膜、前記島状の酸化物半導体膜上の島状の第2の絶縁膜、及び前記第2の絶縁膜上の第2のゲート電極を形成し、
前記第1の絶縁膜、前記配線層、前記島状の酸化物半導体膜、前記島状の第2の絶縁膜、及び前記第2のゲート電極を覆う層間絶縁層を形成し、第4のパターニングにより前記第2のゲート電極及び前記配線層に達する開口を形成し、
前記層間絶縁層上に導電性材料を形成し、第5のパターニングにより、前記第2のゲート電極に接続される引き回し配線、及び前記配線層に接続される画素電極を形成することを特徴とする半導体装置の作製方法。 - 絶縁表面上に第1の導電層を形成し、第1のパターニングにより第1のゲート電極を形成し、
前記第1のゲート電極上に第1の絶縁膜を形成し、
前記第1の絶縁膜上に第2の導電層を形成し、第2のパターニングにより配線層を形成し、
前記第1の絶縁膜上及び前記配線層上に、酸化物半導体膜と、チャネル保護膜と、第2の絶縁膜と、第3の導電層を形成し、第3のパターニングにより、島状の酸化物半導体膜、前記島状の酸化物半導体膜上の島状のチャネル保護膜、前記島状のチャネル保護膜上の島状の第2の絶縁膜、及び前記島状の第2の絶縁膜上の第2のゲート電極を形成し、
前記第1の絶縁膜、前記配線層、前記島状の酸化物半導体膜、前記島状のチャネル保護膜、前記島状の第2の絶縁膜、及び前記第2のゲート電極を覆う層間絶縁層を形成し、第4のパターニングにより前記第2のゲート電極及び前記配線層に達する開口を形成し、
前記層間絶縁層上に導電性材料を形成し、第5のパターニングにより、前記第2のゲート電極に接続される引き回し配線、及び前記配線層に接続される画素電極を形成することを特徴とする半導体装置の作製方法。 - 請求項1または請求項2において、
前記酸化物半導体膜は第1の酸化物半導体膜であり、
前記第2のパターニングによって、前記配線層上に第2の酸化物半導体膜を形成し、
前記第3のパターニングによって、前記酸化物半導体膜と、前記配線層とが重畳する領域に、第2の酸化物半導体膜でなるバッファ層を形成することを特徴とする半導体装置の作製方法。 - 請求項1または請求項2において、
前記酸化物半導体膜は第1の酸化物半導体膜であり、
前記第2のパターニングによって、前記配線層の下に第2の酸化物半導体膜を形成することを特徴とする半導体装置の作製方法。 - 請求項1乃至請求項4のいずれか一において、前記引き回し配線は、前記第2のゲート電極に重畳して設けられていることを特徴とする半導体装置の作製方法。
- 請求項1乃至請求項5のいずれか一において、前記層間絶縁層は、ポリイミドであることを特徴とする半導体装置の作製方法。
- 請求項2乃至請求項6のいずれか一において、前記チャネル保護膜は、アモルファスシリコン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乃至請求項7のいずれか一において、前記酸化物半導体膜は、酸化珪素を含んで形成されることを特徴とする半導体装置の作製方法。
- 請求項1乃至請求項8のいずれか一において、前記引き回し配線は、前記第1のゲート電極に接続されて形成されることを特徴とする半導体装置の作製方法。
- 請求項1乃至請求項9のいずれか一において、前記第2の絶縁膜の膜厚は、50nm以上500nm以下に作製することを特徴とする半導体装置の作製方法。
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Also Published As
Publication number | Publication date |
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TWI567799B (zh) | 2017-01-21 |
CN102422426B (zh) | 2016-06-01 |
JP6471213B2 (ja) | 2019-02-13 |
TW201120947A (en) | 2011-06-16 |
WO2010125986A1 (en) | 2010-11-04 |
KR20150052328A (ko) | 2015-05-13 |
JP5106703B1 (ja) | 2012-12-26 |
JP2016129258A (ja) | 2016-07-14 |
US20100279474A1 (en) | 2010-11-04 |
CN102422426A (zh) | 2012-04-18 |
JP2015079986A (ja) | 2015-04-23 |
KR20120007068A (ko) | 2012-01-19 |
KR101690216B1 (ko) | 2016-12-27 |
JP2018064117A (ja) | 2018-04-19 |
KR101842182B1 (ko) | 2018-03-26 |
JP5669426B2 (ja) | 2015-02-12 |
US8278162B2 (en) | 2012-10-02 |
JP2013038427A (ja) | 2013-02-21 |
JP5997756B2 (ja) | 2016-09-28 |
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