公开(公告)号：US10650762B2

公开(公告)日：2020-05-12

申请号：US16373670

申请日：2019-04-03

Applicant: Sharp Kabushiki Kaisha

Inventor： Makoto Kitagawa ,  Hideki Fujimoto ,  Yusuke Nishihara

IPC: G09G5/02 ,  G09G3/36

Abstract: During a drive period, luminance momentarily decreases when the value β(A−B) is positive and momentarily increases when the value β(A−B) is negative. When the luminance increases during a pause period in accordance with the balance in time constant between an alignment film and a liquid crystal material that are included in a pixel forming portion, primary and secondary parasitic capacitances are adjusted so as to set the value β(A−B) to be negative.

公开(公告)号：US09897860B2

公开(公告)日：2018-02-20

申请号：US15030672

申请日：2014-08-26

Applicant: Sharp Kabushiki Kaisha

Inventor： Ken Kuboki ,  Tsuyoshi Okazaki ,  Yusuke Nishihara

IPC: G02F1/1337 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/133753 ,  G02F1/133528 ,  G02F1/133788 ,  G02F1/134336 ,  G02F1/137 ,  G02F2001/133531 ,  G02F2001/133541 ,  G02F2001/133742 ,  G02F2001/133761 ,  G02F2001/13712 ,  G02F2201/123

Abstract: A first photo-alignment film (12) of a liquid crystal display device (100) includes a first and a second pre-tilt region (12a, 12b) defining pre-tilt directions (PD1, PD2) that are anti-parallel to each other, and a second photo-alignment film (22) thereof includes a third and a fourth pre-tilt region (22a, 22b) defining pre-tilt directions (PD3, PD4) that are anti-parallel to each other. The entire boundary (BD1) between the first and second pre-tilt regions and the entire boundary (BD2) between the third and fourth pre-tilt regions are aligned with each other, as seen from the display plane normal direction. A pixel electrode (11) includes a first and a second cut-off portion (11a1, 11a2) provided by cutting off at least a part of a particular edge portion (11e1, 11e2) of the outer perimeter thereof.

公开(公告)号：US09933662B2

公开(公告)日：2018-04-03

申请号：US14899841

申请日：2014-02-27

Applicant: Sharp Kabushiki Kaisha

Inventor： Ken Kuboki ,  Yusuke Nishihara

IPC: G02F1/1337 ,  G02F1/1335 ,  G02F1/137 ,  G02F1/1333

CPC classification number: G02F1/133753 ,  G02F1/133382 ,  G02F1/133528 ,  G02F1/1337 ,  G02F1/133788 ,  G02F1/137 ,  G02F2001/133531 ,  G02F2001/133541 ,  G02F2001/133742 ,  G02F2001/133757 ,  G02F2001/133761 ,  G02F2001/13712

Abstract: A liquid crystal display device (100) includes a liquid crystal layer (30) of a vertical alignment type, a first photo-alignment film (12), and a second photo-alignment film (22). The first photo-alignment film includes a first pre-tilt region (12a) and a second pre-tilt region (12b) defining pre-tilt directions (PD1, PD2) that are anti-parallel to each other. The second photo-alignment film includes a third pre-tilt region (22a) and a fourth pre-tilt region (22b) defining pre-tilt directions (PD3, PD4) that are anti-parallel to each other. The entire boundary (BD1) between the first pre-tilt region and the second pre-tilt region and the entire boundary (BD2) between the third pre-tilt region and the fourth pre-tilt region are aligned with each other, as seen from the display plane normal direction.

公开(公告)号：US09864240B2

公开(公告)日：2018-01-09

申请号：US15100231

申请日：2014-08-27

Applicant: Sharp Kabushiki Kaisha

Inventor： Tetsuo Fukaya ,  Yoshito Hashimoto ,  Yusuke Nishihara

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1337

CPC classification number: G02F1/134309 ,  G02F1/133345 ,  G02F1/133707 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133776 ,  G02F2001/134372 ,  G02F2201/121 ,  G02F2201/123 ,  G02F2202/10

Abstract: The present invention provides a fringe field switching (FFS) mode liquid crystal display device that makes it possible to improve transmittance when a voltage is applied. The fringe field switching mode liquid crystal display device of the present invention includes: a first substrate; a second substrate arranged facing the first substrate; and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein the first substrate includes, in order, a plurality of pixel electrodes, an insulating film covering the plurality of pixel electrodes, and a common electrode that is layered on top of the plurality of pixel electrodes and has a plurality of parallel slits formed therein, wherein steps that protrude towards a liquid crystal layer side are formed in the first substrate in at least sides of regions between the plurality of pixel electrodes that are parallel to a lengthwise direction of the plurality of parallel slits, and wherein the common electrode covers at least side faces of the steps.

公开(公告)号：US09891483B2

公开(公告)日：2018-02-13

申请号：US14890600

申请日：2014-02-27

Applicant: Sharp Kabushiki Kaisha

Inventor： Yusuke Nishihara ,  Kazuhiko Tsuda ,  Tetsuo Fukaya ,  Hideki Fujimoto ,  Yoshito Hashimoto ,  Masahiro Shimizu

IPC: G02F1/1343 ,  G09G3/36 ,  G02F1/1368 ,  H01L29/24 ,  H01L29/786 ,  G02F1/1362

CPC classification number: G02F1/134363 ,  G02F1/134336 ,  G02F1/136286 ,  G02F1/1368 ,  G09G3/3614 ,  G09G2320/0247 ,  G09G2320/028 ,  H01L29/24 ,  H01L29/7869

Abstract: A liquid crystal display device includes a plurality of pixels arranged in a matrix pattern, each pixel including a first electrode and a second electrode for generating a transverse electric field, wherein: in a first group of pixels arranged in a line along either a row direction or a column direction, pairs of pixels are arranged repeatedly, each pair of pixels including two adjacent pixels that are different from each other in terms of an electrode structure of at least one of the first electrode and the second electrode; and voltages of the same polarity are applied to the two adjacent pixels included in the pair of pixels, and voltages of different polarities from each other are applied to two pixel pairs adjacent to each other in the first group of pixels.