公开(公告)号：EP0732612B1

公开(公告)日：2004-10-20

申请号：EP96104131.6

申请日：1996-03-15

申请人： Hitachi, Ltd.

发明人： Ohta, Masayuki ,  Yanagawa, Kazuhiko ,  Ashizawa, Keiichiro ,  Mishima, Yasuyuki ,  Ogawa, Kazuhiro ,  Ohe, Masahito ,  Yanai, Masahiro ,  Kondo, Katsumi

IPC分类号： G02F1/1343 ,  G02F1/136

CPC分类号： G02F1/133512 ,  G02F1/134363 ,  G02F1/136286

公开(公告)号：EP1202108A2

公开(公告)日：2002-05-02

申请号：EP02001044.3

申请日：1996-03-15

申请人： Hitachi, Ltd.

发明人： Ohta, Masuyuki ,  Yanagawa, Kazuhiko ,  Ashizawa, Keiichiro ,  Mishima, Yasuyuki ,  Ogawa, Kazuhiro ,  Ohe, Masahito ,  Yanai, Masahiro ,  Kondo, Katsumi

IPC分类号： G02F1/1343

CPC分类号： G02F1/133512 ,  G02F1/134363 ,  G02F1/136286

摘要： A liquid crystal display device having a plurality of pixels arranged in the form of a matrix and means for applying voltage signals to change the light transmission factor or light reflection factor of said pixels, said liquid crystal display device comprising:

a liquid crystal layer made of twistable liquid crystal molecules (LC),
a first substrate (SUB1) and a second substrate (SUB2) sandwiching said liquid crystal layer therebetween at least one of which is transparent;
at least one polarizing means (POL1, POL2),
at least a pair of a pixel electrode (PX) and a counter electrode (CT) formed in each of said pixels between the surface of said first substrate (SUB1) and the surface of said liquid crystal layer in order to control the twisting amounts of liquid crystal molecules of said liquid crystal layer by use of an electric field which is established between said pixel electrode (PX) and said counter electrode (CT) and has a component (EDR) in parallel with said first substrate (SUB1), and
a video signal line (a), a signal electrode (GT) and a switching element (TFT) provided in each of said pixels between said first substrate (SUB1) and said liquid crystal layer to feed video signals to said pixel electrode (PX) through said video signal line (DL), said signal electrode (GT) and said switching element (TFT);
wherein said counter electrodes (CT) of adjacent pixels are positioned on both sides of said video signal line (DL), and the widths of said counter electrodes (CT) in the lateral direction are not smaller than one-half the width of said video signal line (DL).

摘要翻译： 一种具有以矩阵形式排列的多个像素的液晶显示装置和用于施加电压信号以改变所述像素的光透射系数或光反射系数的装置，所述液晶显示装置包括：液晶层，由 可弯曲的液晶分子（LC），第一基板（SUB1）和第二基板（SUB2），其中至少一个是透明的，夹着所述液晶层; 至少一个偏振装置（POL1，POL2），在所述第一基板（SUB1）的表面和所述第一基板的表面之间形成在每个所述像素中的至少一对像素电极（PX）和对电极（CT） 液晶层，以通过使用在所述像素电极（PX）和所述对电极（CT）之间建立的电场来控制所述液晶层的液晶分子的扭转量，并且具有分量（EDR） 平行于所述第一基板（SUB1）和视频信号线（a），设置在所述第一基板（SUB1）和所述液晶层之间的每个所述像素中的信号电极（GT）和开关元件（TFT） 通过所述视频信号线（DL），所述信号电极（GT）和所述开关元件（TFT）将视频信号馈送到所述像素电极（PX）; 其中相邻像素的所述对置电极（CT）位于所述视频信号线（DL）的两侧，并且所述相对电极（CT）在横向方向上的宽度不小于所述视频宽度的一半 信号线（DL）。

公开(公告)号：EP0732612A1

公开(公告)日：1996-09-18

申请号：EP96104131.6

申请日：1996-03-15

申请人： HITACHI, LTD.

发明人： Ohta, Masayuki ,  Yanagawa, Kazuhiko ,  Ashizawa, Keiichiro ,  Mishima, Yasuyuki ,  Ogawa, Kazuhiro ,  Ohe, Masahito ,  Yanai, Masahiro ,  Kondo, Katsumi

IPC分类号： G02F1/1343 ,  G02F1/136

CPC分类号： G02F1/133512 ,  G02F1/134363 ,  G02F1/136286

摘要： The invention concerns active matrix liquid crystal display devices comprising a layer of liquid crystal molecules (LC) sandwiched between two substrates (SUB1, SUB2) polarizing means (POL1, POL2) and a pixel electrode (PX) and a counterelectrode (CT) formed in each pixel between the first substrate (SUB1) and the liquid crystal layer for twisting the liquid crystal molecules (LC) through an electric field between the pixel electrode (PX) and the counterelectrode (CT) and having a component (EDR) in parallel with the first substrate (SUB1), wherein the dielectric anisotropy Δε and the effective thickness d eff of the liquid crystal layer, the width Wp of the pixel electrode (PX) in the short-side direction, the width Wc of the counterelectrode (CT) in the short-side direction, and the gap L between the pixel electrode (PX) and the counterelectrode (CT) satisfy the following relationships: Δε > 0, 2.8 µm ≦ d eff ≦ 4.5 µm, 1.2 x d eff ≦ Wp ≦ L/1.2, and 1.2 x d eff ≦ Wc ≦ L/1.2, or Δε 4.2 µm ≦ d eff ≦ 8.0 µm, 1.2 x d eff ≦ Wp ≦ L/1.2, and 1.2 x d eff ≦ Wc ≦ L/1.2.
This concept leads to a wide viewing angle like that of cathode ray tubes, improved picture quality and lower power consumption.

摘要翻译： 本发明涉及有源矩阵液晶显示装置，其包括夹在两个基板（SUB1，SUB2）偏振装置（POL1，POL2）和像素电极（PX）之间的液晶分子层（LC）和形成在其中的反电极 第一基板（SUB1）和用于通过像素电极（PX）和反电极（CT）之间的电场扭转液晶分子（LC）并且具有与 第一基板（SUB1），其中介电各向异性DELTAε和液晶层的有效厚度deff，像素电极（PX）在短边方向上的宽度Wp，反电极（CT）的宽度Wc 在像素电极（PX）和反电极（CT）之间的间隙L在短边方向上满足以下关系：