JP5042077B2 - 表示装置 - Google Patents
表示装置 Download PDFInfo
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- JP5042077B2 JP5042077B2 JP2008062257A JP2008062257A JP5042077B2 JP 5042077 B2 JP5042077 B2 JP 5042077B2 JP 2008062257 A JP2008062257 A JP 2008062257A JP 2008062257 A JP2008062257 A JP 2008062257A JP 5042077 B2 JP5042077 B2 JP 5042077B2
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- transistor
- voltage
- circuit
- gate
- threshold voltage
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Classifications
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Thin Film Transistor (AREA)
- Electroluminescent Light Sources (AREA)
- Shift Register Type Memory (AREA)
- Liquid Crystal Display Device Control (AREA)
Description
YongSoon Lee、外6名、SID 06 DIGEST、16.2(p.1083−p.1086)(2006)
図1を用いて、本発明の表示装置の構成について説明する。図1(A)は本発明の表示装置のブロック図である。本発明の表示装置は、閾値制御回路101と、電源制御回路102と、モニター回路103と、出力回路104と、を有している。図1(A)に示す本発明の表示装置は、さらに出力回路104を有するシフトレジスタ105、シフトレジスタ105を有する走査線駆動回路106、画素部107が示されている。上記構成に加え、本発明の表示装置は、信号線駆動回路を有していても良い。
本実施の形態では、本発明の表示装置が有する、閾値制御回路のより具体的な構成の一例について説明する。図2に示す閾値制御回路200は、コントローラ201と、演算回路202と、計測回路203と、メモリ204とを有している。また図2では、電源制御回路210と、モニター回路211と、AD変換回路212とが図示されている。
本実施の形態では、モニター回路の具体的な構成について説明する。図4に示すように本発明のモニター回路300は、モニター用トランジスタ301を有している。さらに本発明のモニター回路300は、図4に示すように容量303、スイッチング素子SW1を有していても良い。
本実施の形態では、本発明の半導体装置が有する走査線駆動回路の、より詳しい構成とその動作について説明する。
本実施の形態では、本発明の表示装置の全体的な構成について説明する。図11に、本実施の形態の表示装置のブロック図を示す。図11に示す表示装置は、表示素子を備えた画素を複数有する画素部400と、各画素をラインごとに選択する走査線駆動回路410と、選択されたラインの画素へのビデオ信号の入力を制御する信号線駆動回路420と、閾値制御回路430と、電源制御回路431と、モニター回路432とを有する。
102 電源制御回路
103 モニター回路
104 出力回路
105 シフトレジスタ
106 走査線駆動回路
107 画素部
108 トランジスタ
109 トランジスタ
110 モニター用トランジスタ
200 閾値制御回路
201 コントローラ
202 演算回路
203 計測回路
204 メモリ
210 電源制御回路
211 モニター回路
212 AD変換回路
213 モニター用トランジスタ
220 シフトレジスタ
221 出力回路
223 トランジスタ
224 トランジスタ
300 モニター回路
301 モニター用トランジスタ
303 容量
400 画素部
410 走査線駆動回路
411 シフトレジスタ
412 出力回路
420 信号線駆動回路
421 シフトレジスタ
422 ラッチ
423 ラッチ
430 閾値制御回路
431 電源制御回路
432 モニター回路
440 基板
441 FPC
450 基板
451 FPC
460 基板
461 FPC
501 シフトレジスタ
502 ラッチ
503 ラッチ
504 レベルシフタ
505 バッファ
506 ディレイ型フリップフロップ(DFF)
507 記憶回路
508 記憶回路
601 画素部
602 画素
603 スイッチング用トランジスタ
604 駆動用トランジスタ
605 発光素子
606 保持容量
610 画素部
611 画素
612 トランジスタ
613 液晶セル
614 保持容量
700 基板
701 導電膜
703 ゲート絶縁膜
704 半導体膜
705 半導体膜
706 半導体膜
707 マスク
708 導電膜
709 マスク
710 配線
713 配線
714 絶縁膜
715 絶縁膜
716 絶縁膜
717 配線
718 陽極
719 隔壁
720 電界発光層
721 陰極
722 発光素子
900 パルス出力回路
910 走査方向切替回路
911 トランジスタ
912 トランジスタ
913 トランジスタ
914 トランジスタ
920 振幅補償回路
921 トランジスタ
922 トランジスタ
930 振幅補償回路
931 トランジスタ
932 トランジスタ
940 出力回路
941 トランジスタ
942 トランジスタ
951 スイッチング素子
952 スイッチング素子
953 スイッチング素子
2101 本体
2102 表示部
2103 音声入力部
2104 音声出力部
2105 操作キー
2401 筐体
2402 表示部
2403 スピーカー部
2601 本体
2602 表示部
2603 筐体
2604 外部接続ポート
2605 リモコン受信部
2606 受像部
2607 バッテリー
2608 音声入力部
2609 操作キー
2610 接眼部
3001 トランジスタ
3002 トランジスタ
4001 基板
4002 画素部
4003 信号線駆動回路
4004 走査線駆動回路
4005 モニター回路
4006 基板
4007 充填材
4008 トランジスタ
4009 駆動用トランジスタ
4010 スイッチング用トランジスタ
4011 発光素子
4012 対向電極
4013 電界発光層
4014 配線
4015 配線
4016 接続端子
4017 配線
4018 FPC
4019 異方性導電膜
4020 シール材
Claims (8)
- 第1のトランジスタを有する出力回路と、
第2のトランジスタを有し、且つ前記第2のトランジスタの閾値電圧を取得するモニター回路と、
順方向バイアスの電圧または逆方向バイアスの電圧を選択し、且つ前記逆方向バイアスの電圧が選択される時間を、前記閾値電圧を用いて決める閾値制御回路と、
選択された前記順方向バイアスの電圧または前記逆方向バイアスの電圧を、前記第1のトランジスタのゲート及び前記第2のトランジスタのゲートに与える電源制御回路と、を有することを特徴とする表示装置。 - 第1のトランジスタを有する出力回路と、
第2のトランジスタを有し、且つ前記第2のトランジスタの閾値電圧を取得するモニター回路と、
順方向バイアスの電圧または逆方向バイアスの電圧を選択するコントローラと、
前記閾値電圧を用いて前記逆方向バイアスの電圧が前記コントローラによって選択される時間を決める演算回路と、
選択された前記順方向バイアスの電圧または前記逆方向バイアスの電圧を、前記第1のトランジスタのゲート及び前記第2のトランジスタのゲートに与える電源制御回路と、を有することを特徴とする表示装置。 - 第1のトランジスタを有する出力回路と、
第2のトランジスタを有し、且つ前記第2のトランジスタの閾値電圧を取得するモニター回路と、
順方向バイアスの電圧または逆方向バイアスの電圧を選択するコントローラと、
前記閾値電圧の変化量と前記逆方向バイアスの電圧が選択される時間との関係のデータが記憶されたメモリと、
前記閾値電圧及び前記データを用いて、前記逆方向バイアスの電圧が前記コントローラによって選択される時間を決める演算回路と、
選択された前記順方向バイアスの電圧または前記逆方向バイアスの電圧を、前記第1のトランジスタのゲート及び前記第2のトランジスタのゲートに与える電源制御回路と、を有することを特徴とする表示装置。 - 第1のトランジスタを有する出力回路と、
第2のトランジスタを有し、且つ前記第2のトランジスタの閾値電圧を取得するモニター回路と、
順方向バイアスの電圧または逆方向バイアスの電圧を選択するコントローラと、
前記閾値電圧の変化量と前記逆方向バイアスの電圧が選択される時間との関係のデータが記憶されたメモリと、
前記閾値電圧及び前記データを用いて、前記逆方向バイアスの電圧が前記コントローラによって選択される時間を決める演算回路と、
前記逆方向バイアスの電圧が前記コントローラによって選択される時間を計測する計測回路と、
選択された前記順方向バイアスの電圧または前記逆方向バイアスの電圧を、前記第1のトランジスタのゲート及び前記第2のトランジスタのゲートに与える電源制御回路と、を有することを特徴とする表示装置。 - 請求項3または請求項4において、
前記メモリは不揮発性メモリであることを特徴とする表示装置。 - 請求項1乃至請求項5のいずれか1項において、
前記第1のトランジスタ及び前記第2のトランジスタは、極性が同じであることを特徴とする表示装置。 - 請求項1乃至請求項5のいずれか1項において、
前記第1のトランジスタ及び前記第2のトランジスタは、極性が同じであり、且つ酸化珪素よりも誘電率の高い絶縁膜を用いたゲート絶縁膜を有することを特徴とする表示装置。 - 請求項1乃至請求項7のいずれか1項において、
前記出力回路を有する駆動回路から信号が入力される画素部を有することを特徴とする表示装置。
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