JP2010206186A - 保護回路、半導体装置、光電変換装置および電子機器 - Google Patents
保護回路、半導体装置、光電変換装置および電子機器 Download PDFInfo
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/0203—Particular design considerations for integrated circuits
- H01L27/0248—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection
- H01L27/0251—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices
- H01L27/0255—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices using diodes as protective elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1222—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or crystalline structure of the active layer
- H01L27/1225—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or crystalline structure of the active layer with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
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Abstract
【解決手段】集積回路と電気的に接続された信号線と、信号線と第1の電源線との間に設けられた第1のダイオード、及び第1のダイオードと並列に設けられた第2のダイオードと、第1の電源線と第2の電源線との間に設けられた第3のダイオードとを有し、第1のダイオードは、トランジスタをダイオード接続することによって形成されたダイオードであり、第2のダイオードはPIN接合又はPN接合を有するダイオードである保護回路。上記保護回路は、特に薄膜トランジスタを用いて作製される半導体装置に用いられることで効果を発揮する。
【選択図】図1
Description
以下に、本発明の一実施形態を示す。ここでは、本発明の一態様の保護回路は半導体を用いた集積回路に適用する場合を挙げる。
実施の形態1と同様に、本発明の一実施形態を示す。ここでは、本発明の一態様の保護回路は半導体を用いた集積回路に適用する場合を挙げる。
実施の形態1、実施の形態2と同様に、本発明の一実施形態を示す。ここでは、本発明の一態様の保護回路は半導体を用いた集積回路に適用する場合を挙げる。
本実施形態の一態様では、保護回路を含む半導体装置の作製方法について説明する。図4に、保護回路の横接合ダイオードとダイオード接続薄膜トランジスタ(TFT)の平面図を示す。ダイオード接続TFTをA−A’、横接合ダイオードをB−B’で切断した断面図を図5乃至図11に示す。
本実施の形態の一態様は機能回路のトランジスタと、保護回路のダイオードとトランジスタを作製した後の光電変換装置を作製する工程について図7A−図11の断面図を用いて説明する。
本実施の形態の一態様では、上記保護回路を用いて作製された光電変換装置の用途を説明する。
305 トランジスタ
311 電源端子
312 電源端子
321 横接合ダイオード
400 半導体膜
401 N型不純物領域
402 P型不純物領域
403 高抵抗領域
405 半導体膜
406 N型高濃度不純物領域
407 低濃度不純物領域
408 チャネル形成領域
410 導電膜
411 導電膜
421 導電膜
450 光電変換層
451 P型非晶質シリコン膜
451 非晶質シリコン膜
452 I型非晶質シリコン膜
453 N型非晶質シリコン膜
461 導電膜
462 チタン膜
463 ニッケル膜
464 Au膜
500 ガラス基板
501 窒化酸化シリコン膜
502 酸化窒化シリコン膜
503 酸化窒化シリコン膜
504 酸化窒化シリコン膜
504 膜
505 窒化酸化シリコン膜
506 酸化窒化シリコン膜
507 窒化酸化シリコン膜
507 窒化酸化シリコン膜
508 酸化シリコン膜
509 窒化酸化シリコン膜
510 封止膜
520 非晶質シリコン膜
521 結晶性シリコン膜
525 窒化タンタル膜
526 タングステン膜
527 レジストマスク
528 レジストマスク
529 レジストマスク
530 低濃度不純物領域
531 低濃度不純物領域
541 周囲
542 周囲
1101 本体
1102 表示パネル
1103 操作キー
1104 音声出力部
1105 音声入力部
1106 光電変換装置
1107 光電変換装置
1111 本体
1112 表示パネル
1113 キーボード
1114 外部接続ポート
1115 ポインティングデバイス
1121 筐体
1122 支持台
1123 表示パネル
1131 リリースボタン
1132 メインスイッチ
1133 ファインダ窓
1134 フラッシュライト
1135 レンズ
1137 筺体
1138 ファインダ接眼窓
1139 表示パネル
1140 操作ボタン
1146 鏡胴
101 ダイオード接続トランジスタ
102 ダイオード
103 ダイオード
104 抵抗
1201 ダイオード
1202 ダイオード
1301 ダイオード接続トランジスタ
1302 ダイオード
1704 Nチャネル型トランジスタ
1705 Pチャネル型トランジスタ
Claims (7)
- 集積回路と電気的に接続された信号線と、
前記信号線と第1の電源線との間に設けられた第1のダイオード、及び前記第1のダイオードと並列に設けられた第2のダイオードと、
前記第1の電源線と第2の電源線との間に設けられた第3のダイオードとを有し、
前記第1のダイオードは、トランジスタをダイオード接続することによって形成されたダイオードであり、前記第2のダイオードはPIN接合又はPN接合を有するダイオードであることを特徴とする保護回路。 - 請求項1において、
前記第1のダイオードを構成するトランジスタは、前記集積回路が有する少なくとも一のトランジスタと同時に形成されたトランジスタであることを特徴とする保護回路。 - 請求項1又は請求項2において、
前記第2のダイオードは、半導体層にP型を付与する不純物と、N型を付与する不純物とが添加されることによって前記PIN接合又は前記PN接合が形成された横接合ダイオードであり、前記半導体層は、前記トランジスタが有する半導体層と同時に形成された半導体層であることを特徴とする保護回路。 - 請求項1乃至請求項3のいずれか一において、
前記信号線が前記集積回路と電気的に接続されている経路のいずれかに直列に設けられた抵抗を有することを特徴とする保護回路。 - 請求項1乃至請求項4のいずれか一に記載の保護回路を、少なくとも一の信号線に設けたことを特徴とする半導体装置。
- 請求項5に記載の半導体装置を具備したことを特徴とする光電変換装置。
- 請求項5に記載の半導体装置、又は請求項6に記載の光電変換装置を具備したことを特徴とする電子機器。
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US9263399B2 (en) | 2011-03-09 | 2016-02-16 | Renesas Electronics Corporation | Semiconductor device with electro-static discharge protection device above semiconductor device area |
US9530769B2 (en) | 2011-03-09 | 2016-12-27 | Renesas Electronics Corporation | Semiconductor device with electro-static discharge protection device above semiconductor device area |
JP2013102145A (ja) * | 2011-10-14 | 2013-05-23 | Semiconductor Energy Lab Co Ltd | 半導体装置 |
JP2014056972A (ja) * | 2012-09-13 | 2014-03-27 | Ricoh Co Ltd | 静電破壊保護回路及び半導体集積回路 |
US9977299B2 (en) | 2013-10-11 | 2018-05-22 | Seiko Epson Corporation | Static electricity protection circuit, electro-optical apparatus, and electronic equipment |
Also Published As
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US20100202090A1 (en) | 2010-08-12 |
KR20100091111A (ko) | 2010-08-18 |
US8749930B2 (en) | 2014-06-10 |
KR101712379B1 (ko) | 2017-03-06 |
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