JP2016173572A - 液晶表示装置及びその製造方法 - Google Patents
液晶表示装置及びその製造方法 Download PDFInfo
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- JP2016173572A JP2016173572A JP2016052649A JP2016052649A JP2016173572A JP 2016173572 A JP2016173572 A JP 2016173572A JP 2016052649 A JP2016052649 A JP 2016052649A JP 2016052649 A JP2016052649 A JP 2016052649A JP 2016173572 A JP2016173572 A JP 2016173572A
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- liquid crystal
- alignment film
- substrate
- display device
- crystal display
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Abstract
【解決手段】本発明に係る液晶表示装置は、第1の基板と、第1の基板の上に形成されているゲート線及びデータ線と、ゲート線及びデータ線に接続されている画素電極と、画素電極の上に形成されている第1の配向膜と、第1の基板と向かい合う第2の基板と、第2の基板の上に形成されている共通電極と、共通電極の上に形成されている第2の配向膜と、を備え、第1の配向膜の厚さは、第2の配向膜のそれよりも厚い。好ましくは、第1の配向膜は、その表面に形成されている複数の第1の光重合突起を備え、第2の配向膜は、その表面に形成されている複数の第2の光重合突起を備え、第1の光重合突起の密度及び大きさは、第2の光重合突起の密度及び大きさよりも大きい。
【選択図】 図2
Description
初期配向方法のうち、紫外線などの光により重合される前重合体を用いて液晶分子にプレチルトを持たせる方法においては、電場生成電極間に所望の大きさの電圧を印加して前重合体を露光する。
前記液晶表示装置は、曲面状であることが好ましい。
前記曲面状液晶表示装置の曲率の軸は、前記ゲート線又は前記データ線が伸びている方向のうちの少なくとも一つと平行であることが好ましい。
前記液晶表示装置は、前記第1の基板と前記第2の基板との間に注入されている液晶層と、前記液晶層内に含まれている紫外線吸収剤を更に備えることが好ましい。
前記液晶表示装置の製造方法は、前記配向膜を形成するステップ後に、前記表示パネルに外力を印加して前記表示パネルを曲面化させるステップを更に含むことが好ましい。
図1は、本発明の実施形態による液晶表示装置の配置図であり、図2は、図1の液晶表示装置をII−II線に沿って切り取った断面図であり、図3は、本発明の一実施形態による液晶表示装置の画素電極の基本電極を示す平面図である。
透明ガラス製又はプラスチック製の第1の基板110の上にゲート線121及び維持電圧線131a、131bを含むゲート導電体が形成されている。
ゲート線121は、第1のゲート電極124a、第2のゲート電極124b、及び第3のゲート電極124cを備える。
維持電圧線131a、131bは、第1の維持電圧線131a及び第2の維持電圧線131bを備える。
第1の維持電圧線131aは、第1の維持電極133a及び第2の維持電極134aを備え、第2の維持電圧線131bは、第3の維持電極133bを備える。
ゲート絶縁膜140の上には、第1の半導体154a、第2の半導体154b、及び第3の半導体154cが形成されている。
半導体154a、154b、154cの上には、複数のオーミックコンタクト部材163a、165a、163b、165b、163c、165cが形成されている。
第1のソース電極173a及び第2のソース電極173bは、データ線171から延出している。
第3のドレイン電極175cは、分圧基準電圧線172から延出する。
前記データ導電体及びその下に配設される半導体154a、154b、154c、並びにオーミックコンタクト部材163a、165a、163b、165b、163c、165cは、1枚のマスクを用いて同時に形成することが好ましい。
同様に、第2のゲート電極124b、第2のソース電極173b、及び第2のドレイン電極175bは、第2の半導体154bとともに一つの第2の薄膜トランジスタQbをなし、チャンネルは第2のソース電極173bと第2のドレイン電極175bとの間の半導体154bに形成される。
第3のゲート電極124c、第3のソース電極173c、及び第3のドレイン電極175cは、第3の半導体154cとともに一つの第3の薄膜トランジスタQcをなし、チャンネルは第3のソース電極173cと第3のドレイン電極175cとの間の半導体154cに形成される。
第2のドレイン電極175bは、第3のソース電極173cに接続されている。
また、カラーフィルタ230及び遮光部材のうちの少なくとも一方は、第1の表示板100ではなく、第2の表示板200の上に形成される。
カラーフィルタ230が第2の表示板200の上に形成される場合、第1の保護膜180pの上には有機膜が形成される。
第2の保護膜180qは、窒化ケイ素又は酸化ケイ素などの無機絶縁膜を備える。第2の保護膜180qは、カラーフィルタ230が浮き上がることを防ぎ、カラーフィルタ230から流入する溶剤などの有機物による液晶層3の汚染を抑えて画面の駆動時に生成される残像などの不良を防ぐ。
第1の保護膜180p及び第2の保護膜180qには、第1のドレイン電極175a及び第2のドレイン電極175bを露出させる第1のコンタクト孔185a及び第2のコンタクト孔185bが形成されている。
画素電極191の第1の副画素電極191aの全体的な形状は四角形であり、第1の横幹部192a及び第1の縦幹部193aからなる十字状幹部と、この幹部から延出している複数の微細枝部194と、を備える。
画素電極191の第2の副画素電極191bの全体的な形状は四角形であり、第2の横幹部192b及び第2の縦幹部193bからなる十字状幹部と、この幹部から延出している複数の微細枝部194と、を備える。
第1の配向膜11の厚さは、第2の配向膜21のそれよりも厚い。
液晶分子31は負の誘電率異方性を有し、液晶層3の液晶分子31は、電場がない状態でその長軸が2枚の表示板100、200の表面に対して垂直になるように配列されている。
図4(A)〜図4(D)は、本発明の一実施形態による表示装置の製造方法を示す図である。
すると、液晶層3の液晶分子31は、その電場に応答して、図3に基づいて上述したように、2段階に亘って微細枝部194a〜194dの長手方向に平行な方向に傾き、一つの画素において液晶分子31が傾く方向は、合計で4方向となる。
このように液晶層3に電場を生成して、ドメイン境界部DBを基準として互いに異なる方向に液晶分子31を配列した状態で、第1の表示板100側から紫外線などの光を照射する。
また、第2の表示板200の表面と隣り合う部分に重合体からなる第2の配向膜21が形成される。第2の配向膜21は光重合物質を含み、第2の配向膜21の表面には複数の第2の光重合突起が形成されている。
なお、相対的に大きさ及び密度が小さい第2の光重合突起を備える第2の配向膜21が形成されている第2の表示板200と隣り合う第2の液晶分子31Bは、液晶層3に電場を加えていない状態で、第1の液晶分子31Aに比べて更に小さいプレチルト角度を有するように配列される。
即ち、第1の液晶分子31Aは、第1の表示板100の表面に対して第1のプレチルト角度を有し、第2の液晶分子31Bは、第2の表示板100の表面に対して第2のプレチルト角度を有するように初期配向されるが、第1のプレチルト角度は、第2のプレチルト角度よりも大きい。
図5は、本発明の一実施形態による表示装置の製造方法の追加ステップを示す図である。
このように、表示装置を、有限の曲率を有するように曲げることにより、曲面状液晶表示装置が形成される。
また、第2の配向膜21が形成されている第2の基板210と隣り合うように配置されている第2の液晶分子31Bは、第2の基板210の表面と略垂直になるように配列されている。即ち、第1の液晶分子31Aのプレチルト角度は、第2の液晶分子31Bのプレチルト角度よりも大きい。
この結果、実際には、誤整列位置Rに配設された第2の液晶分子31Bは、第1の配向膜11によりプレチルトを有するように配列されている第1の液晶分子31Aが配列される方向に沿って傾く。
第1の配向膜11は光重合物質を含み、光重合物質からなる複数の突起部を備える。
すると、液晶層3の液晶分子31は、その電場に応答して、図3に基づいて上述したように、2段階に亘って微細枝部194a〜194dの長手方向に平行な方向に傾き、一つの画素において液晶分子31が傾く方向は、合計で4方向となる。
このように、液晶層3に電場を生成して、ドメイン境界部DBを基準に互いに異なる方向に液晶分子31を配列した状態で、第1の表示板100側から紫外線などの光を照射する。
図13(A)は、第1の場合の結果を示し、図13(B)は、第2の場合の結果を示す。
11、21 第1、第2配向膜
31、31A、31B 液晶分子
33 前重合体
35 紫外線吸収粒子
72a、72b、72c (分圧基準電圧線の)第1、第2、第3縦部
73a、73b (分圧基準電圧線の)第1、第2横部
100、200 第1、第2表示板
110、210 第1、第2基板
121、121a、121b ゲート線
124a、124b、124c 第1、第2、第3ゲート電極
131a、131b 第1、第2維持電圧線
133a、133b、133c 第1、第2、第3維持電極
140 ゲート絶縁膜
154a、154b、154c 第1、第2、第3半導体
163a、165a、163b、165b、163c、165c オーミックコンタクト部材
171 データ線
172 分圧基準電圧線
173a、173b、173c ソース電極
175a、175b、175c ドレイン電極
180p、180q 第1、第2保護膜
185a、185b 第1、第2コンタクト孔
191 画素電極
191a、191b 第1、第2副画素電極、
192、192a、192b 横幹部
193、193a、193b 縦幹部
194、194a、194b、194c、194d 微細枝部
199 (画素電極の)基本電極
230 カラーフィルタ
270 共通電極
Da、Db、Dc、Dd 副領域
PXA、PXB、PXC 画素
Claims (9)
- 第1の基板と、
前記第1の基板の上に形成されているゲート線及びデータ線と、
前記ゲート線及びデータ線に接続されている画素電極と、
前記画素電極の上に形成されている第1の配向膜と、
前記第1の基板と向かい合う第2の基板と、
前記第2の基板の上に形成されている共通電極と、
前記共通電極の上に形成されている第2の配向膜と、を備え、
前記第1の配向膜の厚さは、前記第2の配向膜の厚さよりも厚いことを特徴とする液晶表示装置。 - 前記第1の配向膜は、その表面に形成されている複数の第1の光重合突起を備え、
前記第2の配向膜は、その表面に形成されている複数の第2の光重合突起を備え、
前記複数の第1の光重合突起の密度及び大きさは、前記複数の第2の光重合突起の密度及び大きさよりも大きいことを特徴とする請求項1に記載の液晶表示装置。 - 前記液晶表示装置は、曲面状であり、
前記曲面状液晶表示装置の曲率の軸は、前記ゲート線又は前記データ線が伸びている方向のうちの少なくとも一つと平行であることを特徴とする請求項2に記載の液晶表示装置。 - 第1の基板と、
前記第1の基板の上に形成されているゲート線及びデータ線と、
前記ゲート線及びデータ線に接続されている画素電極と、
前記画素電極の上に形成されている配向膜と、
前記第1の基板と向かい合う第2の基板と、
前記第2の基板の上に形成されている共通電極と、を備え、
前記共通電極の上には前記配向膜が形成されておらず、
前記配向膜は、前記配向膜の表面に形成されている複数の光重合突起を備えることを特徴とする液晶表示装置。 - 前記第1の基板と前記第2の基板との間に注入されている液晶層と、
前記液晶層内に含まれている紫外線吸収剤を更に備えることを特徴とする請求項2又は4に記載の液晶表示装置。 - 相対向する第1の基板及び第2の基板、及び前記第1の基板と前記第2の基板との間に注入されており、複数の液晶分子を含む表示パネルを形成するステップと、
前記第1の基板に向かって紫外線を照射して、前記第1の基板の上に第1の配向膜を形成し、前記第2の基板の上に第2の配向膜を形成するステップと、を含み、
前記第1の配向膜の厚さは、前記第2の配向膜の厚さよりも厚く形成されることを特徴とする液晶表示装置の製造方法。 - 前記第1の配向膜及び前記第2の配向膜を形成するステップは、
前記第1の配向膜は、その表面に形成されている複数の第1の光重合突起を備えるように形成し、
前記第2の配向膜は、その表面に形成されている複数の第2の光重合突起を備えるように形成し、
前記複数の第1の光重合突起の密度及び大きさは、前記複数の第2の光重合突起の密度及び大きさよりも大きく形成することを特徴とする請求項6に記載の液晶表示装置の製造方法。 - 前記第1の配向膜及び前記第2の配向膜を形成するステップ後に、前記表示パネルに外力を印加して前記表示パネルを曲面化することを特徴とする請求項7に記載の液晶表示装置の製造方法。
- 前記表示パネルを形成するステップは、前記液晶層に紫外線吸収剤を含むように形成することを特徴とする請求項8に記載の液晶表示装置の製造方法。
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TWI753022B (zh) * | 2016-10-04 | 2022-01-21 | 日商Jsr股份有限公司 | 液晶裝置及其製造方法 |
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EP3070518B1 (en) | 2018-05-09 |
EP3349058B1 (en) | 2021-01-20 |
EP3349058A1 (en) | 2018-07-18 |
US10073298B2 (en) | 2018-09-11 |
CN105988248A (zh) | 2016-10-05 |
EP3070518A1 (en) | 2016-09-21 |
CN105988248B (zh) | 2021-02-02 |
KR102340226B1 (ko) | 2021-12-16 |
US20160274389A1 (en) | 2016-09-22 |
JP7050408B2 (ja) | 2022-04-08 |
KR20160111589A (ko) | 2016-09-27 |
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