公开(公告)号：US20150153619A1

公开(公告)日：2015-06-04

申请号：US14403069

申请日：2013-05-22

Applicant: Sharp Kabushiki Kaisha

Inventor： Mitsuhiro Murata ,  Yosuke Iwata ,  Hidefumi Yoshida

IPC: G02F1/1343 ,  G02F1/137 ,  G02F1/1337

CPC classification number: G02F1/134309 ,  G02F1/1337 ,  G02F1/134363 ,  G02F1/137 ,  G02F1/1395 ,  G02F2001/133742 ,  G02F2001/133746 ,  G02F2001/134372 ,  G02F2001/134381 ,  G02F2001/13712

Abstract: Provided is a liquid crystal display device having excellent display characteristics in a display mode that uses a vertical electric field and a horizontal electric field. This liquid crystal display device is provided with a first substrate and a second substrate provided facing each other and a liquid crystal layer sandwiched between the first and second substrates. The liquid crystal layer includes liquid crystal molecules having negative dielectric anisotropy. The first substrate is provided with a plate shaped first common electrode, an insulating film, and pixel electrodes, which are provided in a layer different from the first common electrode via the insulating film, and the pixel electrodes have a comb shaped structure. The second substrate is provided with a plate shaped second common electrode and a film formed by having an alignment treatment applied to a vertical alignment film that aligns the initial orientation of the liquid crystal molecules vertically. During the highest gradation, the difference in electric potential between the first common electrode and second common electrode is set to be larger than the difference in potential between the first common electrode and the pixel electrodes.

Abstract translation: 提供一种在使用垂直电场和水平电场的显示模式中具有优异的显示特性的液晶显示装置。 该液晶显示装置设置有彼此相对设置的第一基板和第二基板以及夹在第一基板和第二基板之间的液晶层。 液晶层包括具有负介电各向异性的液晶分子。 第一基板设置有通过绝缘膜设置在与第一公共电极不同的层中的板状的第一公共电极，绝缘膜和像素电极，并且像素电极具有梳状结构。 第二基板设置有板状的第二公共电极和通过对垂直取向膜施加取向处理形成的膜，该垂直取向膜垂直地对准液晶分子的初始取向。 在最高等级时，第一公共电极和第二公共电极之间的电位差被设定为大于第一公共电极和像素电极之间的电位差。

公开(公告)号：US20140253853A1

公开(公告)日：2014-09-11

申请号：US14350943

申请日：2012-10-11

Applicant: Sharp Kabushiki Kaisha

Inventor： Hidefumi Yoshida ,  Tsuyoshi Kamada ,  Tsuyoshi Maeda ,  Mitsuhiro Murata ,  Yoji Yoshimura ,  Yuichiro Yamada ,  Kenji Okamoto ,  Yosuke Iwata ,  Yasuhiro Nasu ,  Akira Sakai ,  Masahiro Hasegawa

IPC: G02F1/1337

CPC classification number: G02F1/1337 ,  G02F1/133707 ,  G02F1/133753 ,  G02F1/133788 ,  G02F1/134309 ,  G02F2001/133742 ,  G02F2201/122

Abstract: This liquid crystal display device (100) includes: a vertical alignment liquid crystal layer (30); first and second substrates (10, 20); first and second electrodes (11, 21) arranged on the first and second substrates to face the liquid crystal layer; and two photo-alignment films (12, 22). Each pixel region includes first and second liquid crystal domains, of which the reference alignment directions defined by the two photo-alignment films are a first direction and a second direction different from the first direction, respectively. The first electrode has a slit cut region (11R1), through which a slit (11s) has been cut to run substantially parallel to the reference alignment direction, in a part of a region allocated to each of the first and second liquid crystal domains. The width (W) of the slit is set so that when the highest grayscale voltage is applied to the first electrode, an effective applied voltage decreases by at least 0.5 V and the alignment direction of liquid crystal molecules (30a) shifts with respect to the reference alignment direction by less than 45 degrees.

Abstract translation: 该液晶显示装置（100）包括：垂直取向液晶层（30）; 第一和第二基板（10,20）; 布置在第一和第二基板上以面对液晶层的第一和第二电极（11,21）; 和两个光取向膜（12,22）。 每个像素区域包括第一和第二液晶畴，其中由两个光取向膜限定的参考对准方向分别是与第一方向不同的第一方向和第二方向。 在分配给第一和第二液晶畴中的每一个的区域的一部分中，第一电极具有狭缝切割区域（11R1），通过该狭缝切割区域切割狭缝（11s）基本上平行于参考取向方向延伸。 狭缝的宽度（W）被设定为使得当对第一电极施加最高的灰度电压时，有效施加电压降低至少0.5V，并且液晶分子（30a）的取向方向相对于 参考对准方向小于45度。

公开(公告)号：US11567380B2

公开(公告)日：2023-01-31

申请号：US17536330

申请日：2021-11-29

Applicant: Sharp Kabushiki Kaisha

Inventor： Koji Murata ,  Hidefumi Yoshida

IPC: G02F1/1343 ,  G02F1/1368

Abstract: Provided is a liquid crystal display device including: an active matrix substrate including a first substrate, and a first electrode and a second electrode that are stacked via a first insulating layer or that face each other on the first substrate, the second electrode being disposed for each sub-pixel; and a counter substrate sequentially including a second substrate, a third electrode including linear electrode portions, a second insulating layer, and a fourth electrode including linear electrode portions, an extending direction of the linear electrode portions of the third electrode intersecting an extending direction of the linear electrode portions of the fourth electrode in a plan view; and a control circuit being configured to switch between application of an alternating voltage and application of a constant voltage to the third electrode and/or the fourth electrode.

公开(公告)号：US11508327B2

公开(公告)日：2022-11-22

申请号：US17529315

申请日：2021-11-18

Applicant: Sharp Kabushiki Kaisha

Inventor： Koji Murata ,  Hidefumi Yoshida

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1337 ,  G02F1/137 ,  G02F1/1343

Abstract: Provided is a liquid crystal display device including: a liquid crystal panel including display units for displaying an image using a veil-view function; and a control circuit. The display units each include a pair of sub-pixels including a first sub-pixel and a second sub-pixel. The liquid crystal panel sequentially includes an active matrix substrate, a first alignment film, a liquid crystal layer containing liquid crystal molecules, a second alignment film, and a counter substrate. The active matrix substrate includes first and second electrodes that are stacked via a first insulating layer or that face each other on the first substrate. At least one of the first or second electrode is disposed for each first sub-pixel and for each second sub-pixel. The counter substrate includes a third electrode. The control circuit is configured to switch between application of alternating voltage and application of constant voltage to the third electrode.

公开(公告)号：US10741135B2

公开(公告)日：2020-08-11

申请号：US16358321

申请日：2019-03-19

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Takahiro Sasaki ,  Hidefumi Yoshida ,  Kazutaka Hanaoka ,  Kimiaki Nakamura

IPC: G09G3/36 ,  G02F1/13357 ,  G02F1/1343

Abstract: A liquid crystal display device includes sub-pixel electrodes respectively provided to three sub-pixels, and an interelectrode connection portion that connects sub-pixel electrodes adjacent to each other among the sub-pixel electrodes. The interelectrode connection portion is provided in a position where boundaries of liquid crystal alignment directions of sub-pixels adjacent to each other are connected.

公开(公告)号：US10372009B2

公开(公告)日：2019-08-06

申请号：US15751245

申请日：2016-08-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Tomoko Teranishi ,  Hiroyuki Moriwaki ,  Eiji Satoh ,  Tadashi Ohtake ,  Hidefumi Yoshida ,  Satoshi Matsumura

IPC: G02F1/17 ,  G09G3/34 ,  G02F1/167 ,  G02F1/1343 ,  G02F1/13357

Abstract: The optical device (100) includes a first substrate (10), a second substrate (20), and an optical layer (30). The first substrate includes a first electrode (11) and a second electrode (12) configured to be provided with mutually different electrical potentials within a pixel. The optical layer may include a medium (31) and a plurality of shape-anisotropic particles (32) dispersed in the medium. At least one of the first electrode and the second electrode may include a plurality of comb teeth portions (11a, 12a) arranged at predetermined intervals along the first direction (D1). When an electric potential difference is applied between the first electrode and the second electrode, the pixel may be configured to have an electrical field distribution in which a strong electric field region having a stronger field intensity than another region is periodically formed parallel to the surface of the optical layer along a second direction (D2) orthogonal to the first direction.

公开(公告)号：US10175542B2

公开(公告)日：2019-01-08

申请号：US15566452

申请日：2016-04-11

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Takahiro Sasaki ,  Iori Aoyama ,  Yuichi Kita ,  Kazutaka Hanaoka ,  Hidefumi Yoshida

IPC: G02F1/1343 ,  G02F1/1335 ,  G02F1/1362

Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) and an illumination element (2), and is capable of switching between: a first mode of displaying in which displaying is performed by using a plurality of color rays emitted from the illumination element; and a second mode of displaying in which the background is allowed to be perceived, with no color rays being emitted from the illumination element. Each pixel is, under the first mode of displaying, capable of switchably presenting a black displaying state with a vertical field being generated across the liquid crystal layer (30), a white displaying state with a lateral field being generated across the liquid crystal layer, or a transparent displaying state of allowing the rear face side to be visible in a see-through manner with no voltage applied to the liquid crystal layer, and, under the second mode of displaying, capable of switchably presenting a black displaying state with a vertical field being generated across the liquid crystal layer, a transparent displaying state of allowing the rear face side to be visible in a see-through manner with no voltage being applied to the liquid crystal layer, a white displaying state with essentially only a vertical field being generated across the liquid crystal layer, or an intermediate level displaying state with essentially only a vertical field being generated across the liquid crystal layer.

公开(公告)号：US09685131B2

公开(公告)日：2017-06-20

申请号：US14775933

申请日：2014-03-12

Applicant: Sharp Kabushiki Kaisha

Inventor： Kohhei Tanaka ,  Hidefumi Yoshida

IPC: G09G5/00 ,  G09G3/36 ,  G02F1/1345 ,  G09G3/20

CPC classification number: G09G3/3666 ,  G02F1/1345 ,  G02F2001/13456 ,  G02F2201/56 ,  G09G3/20 ,  G09G3/3648 ,  G09G3/3677 ,  G09G2300/0426 ,  G09G2310/0218 ,  G09G2310/0278 ,  G09G2310/0281 ,  G09G2310/0291 ,  G09G2320/0233 ,  G09G2380/16

Abstract: An objective is to provide a technique for reducing the size of the picture-frame region of the active-matrix substrate and improve the freedom of design, such as the freedom in designing the active-matrix substrate. An active-matrix substrate includes a group of gate lines and a group of source lines crossing the gate lines. At least some of the gate lines have a length that is smaller than the maximum value of the width of the active-matrix substrate as measured in the direction in which the gate lines extend. The active-matrix substrate further includes pixel electrodes connected with the gate lines and source lines, and gate line driving units (11) provided in the display region for switching the gate lines to the selected or non-selected state in response to a supplied control signal. First terminals (12s) for providing data signals from the source driver and second terminals (12g) for providing control signals from the display control circuit are provided in the portion of the picture-frame region that is adjacent a side of the display region.

公开(公告)号：US08797490B2

公开(公告)日：2014-08-05

申请号：US14030881

申请日：2013-09-18

Applicant: Sharp Kabushiki Kaisha

Inventor： Shingo Kataoka ,  Arihiro Takeda ,  Takahiro Sasaki ,  Tsutomu Seino ,  Yoshio Koike ,  Hidefumi Yoshida ,  Yuichi Inoue ,  Kazutaka Hanaoka ,  Seiji Tanuma ,  Takatoshi Mayama ,  Kimiaki Nakamura ,  Hideo Chida ,  Seiji Doi ,  Tetsuya Fujikawa ,  Hiroyasu Inoue ,  Takashi Takagi

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/139

CPC classification number: G02F1/134309 ,  G02F1/133528 ,  G02F1/1337 ,  G02F1/133707 ,  G02F1/1362 ,  G02F1/139 ,  G02F1/1393

Abstract: A liquid crystal display device including first and second substrates, with a liquid crystal layer sealed therebetween. The device also includes a first electrode formed on the first substrate, a second electrode formed on the second substrate, a first molecule orientation film formed on the first substrate so as to cover the first electrode, a second molecule orientation film formed on the second substrate so as to cover the second electrode, and a plurality of micro structures associated with at least one of the first and second electrodes, wherein at least some of the micro structures extend generally parallel to each other. When a driving voltage is applied between the first and second electrodes, liquid crystal molecules of the liquid crystal layer are oriented such that no dark line occurs in a vicinity of the plurality of micro structures and no dark line occurs between adjacent micro structures.

Abstract translation: 一种液晶显示装置，包括第一和第二基板，其间密封有液晶层。 该装置还包括形成在第一基板上的第一电极，形成在第二基板上的第二电极，形成在第一基板上以覆盖第一电极的第一分子取向膜，形成在第二基板上的第二分子取向膜 以覆盖第二电极，以及与第一和第二电极中的至少一个相关联的多个微结构，其中至少一些微结构大致彼此平行地延伸。 当在第一和第二电极之间施加驱动电压时，液晶层的液晶分子被定向为使得在多个微结构附近不发生暗线，并且在相邻的微结构之间不发生暗线。