JP2012208480A - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- JP2012208480A JP2012208480A JP2012048120A JP2012048120A JP2012208480A JP 2012208480 A JP2012208480 A JP 2012208480A JP 2012048120 A JP2012048120 A JP 2012048120A JP 2012048120 A JP2012048120 A JP 2012048120A JP 2012208480 A JP2012208480 A JP 2012208480A
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- Prior art keywords
- wiring
- liquid crystal
- insulating film
- electrode
- layer
- Prior art date
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- Granted
Links
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133345—Insulating layers
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Abstract
【解決手段】第1の配線と第2の配線の交差部において、一方の配線を分断し、分断した配線を絶縁膜上の接続電極で架橋し、寄生容量を低減することができる。また、画素電極である第1の電極層、共通電極である第2の電極層と同時に接続電極を形成し、これらの膜厚を厚くし、配線抵抗の小さい金属を用いることで配線による抵抗を小さくすることができ、液晶表示装置の駆動速度の低下を抑制することができる液晶表示装置および液晶表示装置の作製方法を提供することができる。
【選択図】図1
Description
本実施の形態では、本発明の一態様に係る液晶表示装置およびその作製方法について、図1乃至図5を用いて説明する。また、本発明の一態様に係る液晶表示装置に含まれるトランジスタは、ボトムゲート構造の逆スタガ型のトランジスタであり、分断された上部の配線が接続電極で電気的に接続され、接続配線が下部の配線と交差する構成を一例に挙げる。
本実施の形態では、他の本発明の一態様に係る液晶表示装置およびその作製方法について、図6乃至図8を用いて説明する。
他の本発明の一態様にかかる液晶表示装置の画素領域は、複数の第1の配線と、複数の第2の配線と、複数のトランジスタと、液晶層を挟持する第1の基板および第2の基板と、を有している。本発明の一態様にかかる液晶表示装置の、画素領域の一部の構成について説明する。図10は、液晶表示装置の平面図であり、1画素分の画素を示しており、本実施の形態に示す液晶表示装置では当該画素がマトリクス状に複数設けられる。また、図11は、図10の線X1−X2、線X3−X4、線X5−X6における断面図をそれぞれ示す。
本発明の一態様に係る液晶表示装置のトランジスタは趣旨およびその範囲から逸脱することがなければどのような構成でもいいが特に微結晶シリコンを半導体層に用いたトランジスタが好ましい。よって、本実施の形態では、微結晶シリコンを半導体層に用いたトランジスタを含む本発明の一態様の液晶表示装置について図12、図13を用いて説明する。
本明細書に開示する液晶表示装置は、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。電子機器としては、例えば、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)、コンピュータ用などのモニタ、デジタルカメラ、デジタルビデオカメラ、デジタルフォトフレーム、電子書籍、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯型ゲーム機、携帯情報端末、音響再生装置、パチンコ機などの大型ゲーム機などが挙げられる。
302 第1の電極層
303 第2の電極層
303a 第2の電極層
303b 第2の電極層
304 容量素子
305 第1の配線
306 半導体層
307 ソース電極
308 ドレイン電極
309 第2の配線
310 第2の配線
311 第1の接続電極
312 第2の接続電極
314 導電膜
316 第3の配線
318 第1の基板
319 絶縁膜
320 絶縁膜
321 絶縁膜
322 絶縁膜
323 絶縁膜
327 第2の基板
328 液晶層
329 微結晶半導体層
330 非晶質半導体層
331 不純物半導体層
332 不純物半導体層
333 絶縁膜
333a 絶縁膜
333b 絶縁膜
333c 絶縁膜
333d 絶縁膜
334 絶縁膜
334a 絶縁膜
334b 絶縁膜
334c 絶縁膜
334d 絶縁膜
340 導電膜
342a 矢印
342b 矢印
351 トランジスタ
356 半導体層
1000 テレビジョン装置
1001 筐体
1003 表示部
1005 スタンド
1007 表示部
1009 操作キー
1010 リモコン操作機
1100 デジタルフォトフレーム
1101 筐体
1103 表示部
1281 筐体
1282 表示部
1283 表示部
1284 スピーカー部
1285 操作キー
1286 記録媒体挿入部
1287 接続端子
1288 センサ
1289 マイクロフォン
1290 LEDランプ
1291 筐体
1293 連結部
1340 筐体
1341 筐体
1342 表示パネル
1343 スピーカー
1344 マイクロフォン
1345 表示ボタン
1346 ポインティングデバイス
1347 カメラ用レンズ
1348 外部接続端子
1349 太陽電池セル
1350 外部メモリスロット
1401 表示部
1402 表示ボタン
1403 操作スイッチ
1405 調節部
1406 カメラ部
1407 スピーカー
1408 マイク
1501 上部筐体
1502 下部筐体
1503 表示部
1504 キーボード
1505 外部接続ポート
1506 ポインティングデバイス
1507 表示部
Claims (10)
- 液晶層を挟持する第1の基板および第2の基板と、
画素領域と、を有し、
前記画素領域の各画素は、
トランジスタと、
前記トランジスタと電気的に接続された第1の配線と、
前記トランジスタと電気的に接続され、前記第1の配線と直交し、且つ前記画素ごとに分断された第2の配線と、
前記第1の配線と前記第2の配線の間に設けられた第1の絶縁膜と、
前記トランジスタと、前記第2の配線と、を覆う第2の絶縁膜と、
前記第2の配線と当該第2の配線と前記第1の配線を挟んで隣接する画素の他の第2の配線とを電気的に接続している接続電極と、
前記トランジスタと電気的に接続され、前記液晶層中に突出する第1の電極層と、
前記第1の電極層の間に設けられた、前記液晶層中に突出する第2の電極層と、を有し、
前記第2の配線は、前記第1の配線上にあり、
前記接続電極は、前記第2の絶縁膜を介して前記第1の配線の一部と重なり、
前記接続電極、前記第1の電極層および前記第2の電極層の膜厚は、前記液晶層の膜厚の10%以上100%以下であり、
前記接続電極、前記第1の電極層および前記第2の電極層は、金属膜であり、前記第2の絶縁膜上に設けられている液晶表示装置。 - 液晶層を挟持する第1の基板および第2の基板と、
画素領域と、を有し、
前記画素領域の各画素は、
トランジスタと、
前記トランジスタと電気的に接続された第1の配線と、
前記トランジスタと電気的に接続され、前記第1の配線と直交し、且つ前記画素ごとに分断された第2の配線と、
前記第1の配線と前記第2の配線の間に設けられた第1の絶縁膜と、
前記トランジスタと、前記第1の配線と、を覆う第2の絶縁膜と、
前記第2の配線と当該第2の配線と前記第1の配線を挟んで隣接する画素の他の第2の配線とを電気的に接続している接続電極と、
前記トランジスタと電気的に接続され、前記液晶層中に突出する第1の電極層と、
前記第1の電極層の間に設けられた、前記液晶層中に突出する第2の電極層と、を有し、
前記第1の配線は、前記第2の配線上にあり、
前記接続電極は、前記第2の絶縁膜を介して前記第1の配線の一部と重なり、
前記接続電極、前記第1の電極層および前記第2の電極層の膜厚は、前記液晶層の膜厚の10%以上100%以下であり、
前記接続電極、前記第1の電極層および前記第2の電極層は、金属膜であり、前記第2の絶縁膜上に設けられている液晶表示装置。 - 接続電極、第1の電極層および第2の電極層上に接して設けられる第3の絶縁膜と、を有し、
前記第3の絶縁膜は遮光性を有している請求項1または請求項2に記載の液晶表示装置。 - 接続電極、第1の電極層および第2の電極層上に接して設けられる第3の絶縁膜と、を有し、
前記第3の絶縁膜は、前記第2の基板と接している請求項1または請求項2に記載の液晶表示装置。 - 前記第3の絶縁膜は遮光性を有している請求項4に記載の液晶表示装置。
- 前記第2の絶縁膜に設けられた開口を介して、前記第2の配線と、当該第2の配線と前記第1の配線を挟んで隣接する画素の他の第2の配線と、前記接続電極とが電気的に接続される請求項1乃至請求項5のいずれか一に記載の液晶表示装置。
- 前記液晶層は、ブルー相を示す液晶を含んでいる請求項1乃至請求項6のいずれか一に記載の液晶表示装置。
- 前記第1の配線と同一層に、当該配線と平行に設けられる、前記第1の電極層に容量電位を供給するための第3の配線を有する請求項1乃至請求項7のいずれか一に記載の液晶表示装置。
- 前記第1の電極層および前記第2の電極層は櫛歯状である請求項1乃至請求項8のいずれか一に記載の液晶表示装置。
- 前記第2の絶縁膜の膜厚は500nm以上5μm以下である請求項1乃至請求項9のいずれか一に記載の液晶表示装置。
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