JP2011120221A - 駆動回路、当該駆動回路を具備する表示装置、及び当該表示装置を具備する電子機器 - Google Patents
駆動回路、当該駆動回路を具備する表示装置、及び当該表示装置を具備する電子機器 Download PDFInfo
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- 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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Abstract
【解決手段】半導体層の上下に絶縁層を介して配置された第1のゲート及び第2のゲートを有する単極性のトランジスタで構成される駆動回路において、第1のゲートには、トランジスタのスイッチングを制御するための第1の信号が入力され、第2のゲートには、トランジスタのしきい値電圧を制御するための第2の信号が入力され、第2の信号は、トランジスタのソースとドレインとの間を流れる電流を含む、駆動回路の消費電流の値に応じて制御されるものとする。
【選択図】図1
Description
本実施の形態では、駆動回路周辺の各回路のブロック図について示す。図1では、表示装置の駆動回路を例に挙げて説明を行うものである。
本実施の形態では、上記実施の形態で説明した駆動回路、及び当該駆動回路によって制御される表示部を具備する表示装置の断面図について、図5を用いて説明する。また本実施の形態では、表示装置として液晶表示装置の一例について説明をおこなうが、有機EL等の発光素子を具備する表示装置、または電気泳動素子を具備する電子ペーパーの駆動回路としても適用することが可能である。なお、上記実施の形態で説明した構成は、表示装置の駆動回路に限らず、光センサ用駆動回路等の他の装置にも適用可能である。
本実施の形態では、同一基板上に少なくとも駆動回路の一部と、画素部に配置する薄膜トランジスタを作製する例について以下に説明する。なお基板上に配置する薄膜トランジスタは、実施の形態2の断面図に示すよう形成すればよい。
本実施形態においては、上記実施の形態で説明した表示装置を表示部に具備する電子機器の例について説明する。
11 配線
12 配線
13 配線
14 配線
15 配線
16 配線
17 配線
18 配線
21 入力端子
22 入力端子
23 入力端子
24 入力端子
25 入力端子
26 出力端子
27 出力端子
28 入力端子
31 トランジスタ
32 トランジスタ
33 トランジスタ
34 トランジスタ
35 トランジスタ
36 トランジスタ
37 トランジスタ
38 トランジスタ
39 トランジスタ
40 トランジスタ
41 トランジスタ
51 配線
52 配線
53 配線
61 期間
62 期間
100 駆動回路
101 表示部駆動回路
102 制御回路
104 表示部
105 基板
106 信号生成回路
107 バックゲート電圧制御回路
108 電流値検出回路
109 判定回路
110 補正電圧記憶回路
111 補正電圧出力回路
201 ステップ
202 ステップ
203 ステップ
204 ステップ
205 ステップ
206 ステップ
701 薄膜トランジスタ
702 容量
703 薄膜トランジスタ
704 画素電極層
705 絶縁層
706 基板
707 絶縁層
708 対向電極層
709 着色層
710 対向基板
711 液晶層
713 端子
714 接続電極
715 端子電極
716 端子
717 端子電極
718 導電層
720 導電層
721 ゲート電極層
722 ゲート絶縁層
723 半導体層
724 酸化物絶縁層
900 薄膜トランジスタ
901 ゲート
902 ゲート絶縁膜
903 酸化物半導体膜
905 絶縁層
906 ゲート
907 基板
911 曲線
912 曲線
913 曲線
921 薄膜トランジスタ
922 薄膜トランジスタ
923 薄膜トランジスタ
924 薄膜トランジスタ
925 容量素子
926 配線
927 配線
928 配線
1011 筐体
1012 支持台
1013 表示部
1031 本体
1032 表示部
1033 受像部
1034 操作キー
1035 外部接続ポート
1036 シャッターボタン
103A ゲート線駆動回路
103B 信号線駆動回路
1051 本体
1052 筐体
1053 表示部
1054 キーボード
1055 外部接続ポート
1056 ポインティングデバイス
1101 矢印
204A ソース端子
204B ドレイン端子
5601 シフトレジスタ
5602 スイッチング回路
5603 薄膜トランジスタ
5604 配線
5605 配線
719b ドレイン電極層
904A ソース端子
904B ドレイン端子
Claims (6)
- 半導体層の上下に絶縁層を介して配置された第1のゲート及び第2のゲートを有する単極性のトランジスタで構成される駆動回路において、
前記第1のゲートには、前記トランジスタのスイッチングを制御するための第1の信号が入力され、
前記第2のゲートには、前記トランジスタのしきい値電圧を制御するための第2の信号が入力され、
前記第2の信号は、前記トランジスタのソースとドレインとの間を流れる電流を含む、前記駆動回路の消費電流の値に応じて制御されることを特徴とする駆動回路。 - 請求項1において、前記第2の信号は、前記消費電流の値の増減に応じて、前記第2のゲートに印加する電圧レベルを変更するよう補正するバックゲート電圧制御回路により供給される信号であることを特徴とする駆動回路。
- 請求項1または請求項2において、前記バックゲート電圧制御回路は、前記消費電流の値を検出する電流値検出回路、前記消費電流の値に応じて補正のための電圧を記憶する補正電圧記憶回路、及び前記補正のための電圧を第2のゲートに出力する補正電圧出力回路を有することを特徴とする駆動回路。
- 請求項1乃至請求項3のいずれか一において、前記半導体層は、酸化物半導体であることを特徴とする駆動回路。
- 請求項1乃至請求項4のいずれか一に記載の前記駆動回路を具備する表示装置。
- 請求項5に記載の表示装置を具備する電子機器。
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JP2010236342A JP5178801B2 (ja) | 2009-10-30 | 2010-10-21 | 半導体装置 |
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JP2010236342A JP5178801B2 (ja) | 2009-10-30 | 2010-10-21 | 半導体装置 |
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JP2011120221A true JP2011120221A (ja) | 2011-06-16 |
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JP2013001039A Expired - Fee Related JP5728507B2 (ja) | 2009-10-30 | 2013-01-08 | 表示装置 |
JP2015022143A Withdrawn JP2015135500A (ja) | 2009-10-30 | 2015-02-06 | 表示装置 |
JP2016168046A Active JP6328709B2 (ja) | 2009-10-30 | 2016-08-30 | 表示装置 |
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JP2015022143A Withdrawn JP2015135500A (ja) | 2009-10-30 | 2015-02-06 | 表示装置 |
JP2016168046A Active JP6328709B2 (ja) | 2009-10-30 | 2016-08-30 | 表示装置 |
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US (1) | US8674979B2 (ja) |
JP (4) | JP5178801B2 (ja) |
KR (1) | KR101712340B1 (ja) |
CN (1) | CN102484471B (ja) |
TW (2) | TWI592918B (ja) |
WO (1) | WO2011052368A1 (ja) |
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JP2015135500A (ja) | 2015-07-27 |
JP2013077838A (ja) | 2013-04-25 |
JP2016218472A (ja) | 2016-12-22 |
JP6328709B2 (ja) | 2018-05-23 |
WO2011052368A1 (en) | 2011-05-05 |
TWI594222B (zh) | 2017-08-01 |
TW201207809A (en) | 2012-02-16 |
CN102484471A (zh) | 2012-05-30 |
US8674979B2 (en) | 2014-03-18 |
JP5178801B2 (ja) | 2013-04-10 |
TW201626350A (zh) | 2016-07-16 |
KR101712340B1 (ko) | 2017-03-06 |
TWI592918B (zh) | 2017-07-21 |
US20110102409A1 (en) | 2011-05-05 |
CN102484471B (zh) | 2015-04-01 |
JP5728507B2 (ja) | 2015-06-03 |
KR20120112371A (ko) | 2012-10-11 |
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