JP5792953B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5792953B2 JP5792953B2 JP2010287758A JP2010287758A JP5792953B2 JP 5792953 B2 JP5792953 B2 JP 5792953B2 JP 2010287758 A JP2010287758 A JP 2010287758A JP 2010287758 A JP2010287758 A JP 2010287758A JP 5792953 B2 JP5792953 B2 JP 5792953B2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
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- G09G3/3413—Details of control of colour illumination sources
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- 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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- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Television Receiver Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
本実施の形態では、静止画モードと動画モードを有する液晶表示装置について図1を用いて説明する。なお、本明細書において、表示装置が表示装置に入力する画像信号を静止画と判断しておこなう動作を静止画モード、動画と判断して行う動作を動画モードというものとする。
本実施の形態では、画素接続図、タイミングチャート等を用いて、液晶表示装置の駆動方法について説明する。まず図2には、液晶表示装置の表示パネルの概略図について示している。図2には、画素部201、走査線202(ゲート線ともいう)、信号線203(データ線ともいう)、画素210、共通電極218(コモン電極ともいう)、容量線219、走査線側駆動回路206、信号線側駆動回路207を有する。
図4に液晶表示モジュール190の構成を示す。液晶表示モジュール190はバックライト部130と、バックライト部130と重なる位置にカラーフィルタを有し、液晶素子がマトリクス状に設けられた表示パネル120と、表示パネル120を挟む偏光板125a、及び偏光板125bを有する。バックライト部130は、面状に均一な白色光を発する。例えば導光板の端部に白色の発光素子133を配置し、表示パネル120との間に拡散板134を設けたものをバックライト部130に用いることができる。また、外部入力端子となるFPC(フレキシブルプリントサーキット)126は表示パネル120に設けた端子部と電気的に接続されている。
本実施の形態では、本明細書に開示する液晶表示装置に適用できるトランジスタの例を示す。本明細書に開示する液晶表示装置に適用できるトランジスタの構造は特に限定されず、例えばトップゲート構造、又はボトムゲート構造のスタガ型及びプレーナ型などを用いることができる。また、トランジスタはチャネル形成領域が一つ形成されるシングルゲート構造でも、二つ形成されるダブルゲート構造もしくは三つ形成されるトリプルゲート構造であっても良い。また、チャネル領域の上下にゲート絶縁層を介して配置された2つのゲート電極層を有する、デュアルゲート型でもよい。なお、図9(A)乃至(D)にトランジスタの断面構造の一例を以下に示す。図9(A)乃至(D)に示すトランジスタは、半導体として酸化物半導体を用いるものである。酸化物半導体を用いることのメリットは、比較的簡単かつ低温のプロセスで高い移動度と低いオフ電流が得られることであるが、もちろん、他の半導体を用いてもよい。
本実施の形態は、酸化物半導体層を含むトランジスタ、及び作製方法の一例を図10を用いて詳細に説明する。上記実施の形態と同一部分又は同様な機能を有する部分、及び工程は、上記実施の形態と同様に行うことができ、繰り返しの説明は省略する。また同じ箇所の詳細な説明は省略する。
本実施の形態では、半透過型液晶表示装置の1画素当たりの反射光量と透過光量を向上せしめる画素構成について、図11、図12、及び図13を用いて説明する。
本実施の形態においては、上記実施の形態で説明した液晶表示装置を具備する電子機器の例について説明する。
101:画像信号供給源
102:A/D変換回路
106:走査線側駆動回路
107:信号線側駆動回路
111 記憶回路
112 比較回路
113 表示制御回路
115 選択回路
120:表示パネル
121 駆動回路部
122 画素部
123 画素
125a 偏光板
125b 偏光板
126 FPC(フレキシブルプリントサーキット)
130 バックライト部
131 バックライト制御回路
132 バックライト
133 発光素子
134 拡散板
135 光
139 外光
201 画素部
202 走査線
203 信号線
206 走査線側駆動回路
207 信号線側駆動回路
210:画素
212:画素トランジスタ
213:液晶素子
214:容量素子
218:共通電極
219:容量線
301 動画表示期間
302 静止画表示期間
303 静止画書き込み期間
304 静止画保持期間
401 ゲート電極層
402 ゲート絶縁層
403 酸化物半導体層
405a ソース電極層
405b ドレイン電極層
407 絶縁層
408 容量配線層
409 保護絶縁層
410 トランジスタ
413 層間膜
416 着色層
420 トランジスタ
427 絶縁層
430 トランジスタ
436a 配線層
436b 配線層
437 絶縁層
440 トランジスタ
441 第1の基板
442 第2の基板
444 液晶層
446 反射電極層
447 透明電極層
448 共通電極層
449 導電層
450 トランジスタ
460a 配向膜
460b 配向膜
470 カラーフィルタ
480 絶縁層
482 絶縁層
498 反射領域
499 透過領域
505 基板
506 保護絶縁層
507 ゲート絶縁層
510 トランジスタ
511 ゲート電極層
515a ソース電極層
515b ドレイン電極層
516 絶縁層
530 酸化物半導体膜
531 酸化物半導体層
800 基板
820 構造体
821 反射層
822 有機樹脂膜
823 透明電極
825 反射電極
826 開口部
827 絶縁膜
828 絶縁膜
831 透過光
832 反射光
841 バックライト射出光口
842 バックライト入射光口
851 トランジスタ
852 配線
853 容量配線
854 配線
855 コンタクトホール
856 ソース電極
857 ドレイン電極
858 ゲート電極
871 保持容量
880 部位
881 部位
9630 筐体
9631 表示部
9632 操作キー
9633 太陽電池
9634 充放電制御回路
9635 バッテリー
9636 コンバータ
9637 コンバータ
Claims (4)
- 表示パネルと、バックライト部と、画像処理回路とを有し、
前記表示パネルは、第1の駆動回路と、画素部とを有し、
前記画素部は、透光性を有する導電層と、反射性を有する導電層と、前記透光性を有する導電層と電気的に接続されたトランジスタと、カラーフィルタとを有し、
前記画素部は、透過領域と、反射領域とを有し、
前記透過領域は、前記カラーフィルタと、前記透光性を有する導電層とが重なる領域を有し、
前記反射領域は、前記トランジスタと、前記透光性を有する導電層と、前記反射性を有する導電層とが重なる領域を有し、
前記反射性を有する導電層は、前記透光性を有する導電層と接する領域を有し、
前記バックライト部は、第2の駆動回路と、バックライトとを有し、
前記表示パネルが動画を表示する場合は、前記画像処理回路から前記第2の駆動回路に前記バックライトを点灯する機能を有する第1の信号が出力され、且つ、前記画像処理回路から前記第1の駆動回路に第1の画像信号が出力され、
前記表示パネルが静止画を表示する場合は、前記画像処理回路から前記第2の駆動回路への前記第1の信号の出力が停止されて前記バックライトが消灯し、且つ、前記画像処理回路から前記第1の駆動回路に第2の画像信号が出力され、前記トランジスタにより第2の画像信号に対応する信号が保持された後、前記第2の画像信号の出力が停止され、
前記透光性を有する導電層と、前記反射性を有する導電層とは、絶縁層を介して重なる領域を有し、
前記反射性を有する導電層は、複数の第1の開口部を有し、
前記絶縁層は、複数の第2の開口部を有し、
複数の前記第1の開口部は、複数の前記第2の開口部と重なり、
複数の前記第1及び前記第2の開口部において、前記透光性を有する導電層は、前記反射性を有する導電層の上面よりも突出した領域を有し、
複数の前記第1の開口部は、前記透過領域であり、
前記反射性を有する導電層のうち複数の前記第1の開口部以外は、前記反射領域であり、
複数の前記第1の開口部同士に挟まれた前記反射領域の部分では、前記反射性を有する導電層の上面は凹形状の湾曲面を有することを特徴とする半導体装置。 - 表示パネルと、バックライト部と、画像処理回路とを有し、
前記表示パネルは、第1の駆動回路と、画素部とを有し、
前記画素部は、透光性を有する導電層と、反射性を有する導電層と、前記透光性を有する導電層と電気的に接続されたトランジスタと、カラーフィルタとを有し、
前記画素部は、透過領域と、反射領域とを有し、
前記透過領域は、前記カラーフィルタと、前記透光性を有する導電層とが重なる領域を有し、
前記反射領域は、前記トランジスタと、前記透光性を有する導電層と、前記反射性を有する導電層とが重なる領域を有し、
前記反射性を有する導電層は、前記透光性を有する導電層と接する領域を有し、
前記トランジスタは、酸化物半導体を有し、
前記バックライト部は、第2の駆動回路と、バックライトとを有し、
前記表示パネルが動画を表示する場合は、前記画像処理回路から前記第2の駆動回路に前記バックライトを点灯する機能を有する第1の信号が出力され、且つ、前記画像処理回路から前記第1の駆動回路に第1の画像信号が出力され、
前記表示パネルが静止画を表示する場合は、前記画像処理回路から前記第2の駆動回路への前記第1の信号の出力が停止されて前記バックライトが消灯し、且つ、前記画像処理回路から前記第1の駆動回路に第2の画像信号が出力され、前記トランジスタにより第2の画像信号に対応する信号が保持された後、前記第2の画像信号の出力が停止され、
前記透光性を有する導電層と、前記反射性を有する導電層とは、絶縁層を介して重なる領域を有し、
前記反射性を有する導電層は、複数の第1の開口部を有し、
前記絶縁層は、複数の第2の開口部を有し、
複数の前記第1の開口部は、複数の前記第2の開口部と重なり、
複数の前記第1及び前記第2の開口部において、前記透光性を有する導電層は、前記反射性を有する導電層の上面よりも突出した領域を有し、
複数の前記第1の開口部は、前記透過領域であり、
前記反射性を有する導電層のうち複数の前記第1の開口部以外は、前記反射領域であり、
複数の前記第1の開口部同士に挟まれた前記反射領域の部分では、前記反射性を有する導電層の上面は凹形状の湾曲面を有することを特徴とする半導体装置。 - 請求項1または2において、
前記反射性を有する導電層は、表面に凹凸形状を有することを特徴とする半導体装置。 - 請求項1乃至3のいずれか一において、
前記表示パネルが動画を表示する場合は、カラー画像の表示を行い、
前記表示パネルが静止画を表示する場合は、モノクロ画像の表示を行うことを特徴とする半導体装置。
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JP2017033001A (ja) * | 2010-01-20 | 2017-02-09 | 株式会社半導体エネルギー研究所 | 表示装置 |
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JP5933904B2 (ja) | 2016-06-15 |
US9448433B2 (en) | 2016-09-20 |
US10600372B2 (en) | 2020-03-24 |
WO2011081041A1 (en) | 2011-07-07 |
JP2016177301A (ja) | 2016-10-06 |
TW201137837A (en) | 2011-11-01 |
US20110157252A1 (en) | 2011-06-30 |
US10242629B2 (en) | 2019-03-26 |
US20160365041A1 (en) | 2016-12-15 |
JP2015222440A (ja) | 2015-12-10 |
JP6194053B2 (ja) | 2017-09-06 |
JP2017021358A (ja) | 2017-01-26 |
JP2011154357A (ja) | 2011-08-11 |
JP5178948B2 (ja) | 2013-04-10 |
US20190221170A1 (en) | 2019-07-18 |
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US20160365040A1 (en) | 2016-12-15 |
TWI514354B (zh) | 2015-12-21 |
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