公开(公告)号：US20230408743A1

公开(公告)日：2023-12-21

申请号：US18331389

申请日：2023-06-08

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Ayaka HIGUCHI ,  Koichi IGETA ,  Shinichiro OKA ,  Yasushi TOMIOKA ,  Hiroyuki YOSHIDA

IPC: G02B5/30

CPC classification number: G02B5/3016

Abstract: According to one embodiment, a liquid crystal optical element includes a first liquid crystal layer including a first cholesteric liquid crystal and a second liquid crystal layer including a second cholesteric liquid crystal, a helical pitch of each of the first cholesteric liquid crystal and the second cholesteric liquid crystal changing continuously. The first cholesteric liquid crystal including a first portion having a first helical pitch and a second portion having a second helical pitch different from the first helical pitch. The second cholesteric liquid crystal including a third portion having a third helical pitch and a fourth portion having a fourth helical pitch different from the third helical pitch.

公开(公告)号：US20220308394A1

公开(公告)日：2022-09-29

申请号：US17655684

申请日：2022-03-21

Applicant: Japan Display Inc.

Inventor： Koichi IGETA

IPC: G02F1/1335 ,  G02F1/1337

Abstract: According to one embodiment, a liquid crystal element includes a first transparent substrate, a second transparent substrate, and a first liquid crystal layer cured. The first liquid crystal layer contains first cholesteric liquid crystal and has a reflective surface which reflects first circularly polarized light having a first wavelength. A first helical axis of the first cholesteric liquid crystal is tilted in a uniform direction over an entire area of the first liquid crystal layer. Each of a first outer surface of the first transparent substrate and a second outer surface of the second transparent substrate forms an interface which totally reflects the first circularly polarized light reflected in the first liquid crystal layer.

公开(公告)号：US20220100039A1

公开(公告)日：2022-03-31

申请号：US17448718

申请日：2021-09-24

Applicant: Japan Display Inc.

Inventor： Ayaka HIGUCHI ,  Koichi IGETA

IPC: G02F1/1337 ,  G02F1/1339 ,  G02F1/1335

Abstract: The purpose of the present invention is to realize the photo alignment film which has good alignment ability and good adhesive strength with the seal material. The structure of the invention is:
A liquid crystal display device including a first substrate, having pixel electrodes and a first alignment film, and a second substrate adhere to each other by seal material, and the liquid crystal being sealed inside, in which the first alignment film is formed from a first polyimide, which receives a photo alignment treatment, and a second polyimide, which does not receive the photo alignment treatment, the first polyimide exists 75 to 98 weight % at a surface of the first alignment film on the pixel electrode and at an interface with the seal material, the second polyimide increases gradually in going to depth direction from the surface of the first alignment film in a cross sectional view.

公开(公告)号：US20210063791A1

公开(公告)日：2021-03-04

申请号：US17095928

申请日：2020-11-12

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Hirotaka Imayama

IPC: G02F1/1339 ,  G02F1/1335

Abstract: To improve the display quality of a display device, the display device includes a display section and a frame section surrounding a periphery of the display section. A substrate in the display device includes a conductor pattern constituting a circuit section and an insulating film serving as an organic film covering the conductor pattern. The insulating film extends to a peripheral edge of the substrate. A slit, which penetrates the insulating film in a thickness direction, is formed in a corner part of the insulating film. The slit is formed at a position not overlapping the circuit section.

公开(公告)号：US20190086711A1

公开(公告)日：2019-03-21

申请号：US16191865

申请日：2018-11-15

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Hirotaka IMAYAMA

IPC: G02F1/1333 ,  G02F1/1339

Abstract: To improve the display quality of a display device, the display device includes a display section and a frame section surrounding a periphery of the display section. A substrate in the display device includes a conductor pattern constituting a circuit section and an insulating film serving as an organic film covering the conductor pattern. The insulating film extends to a peripheral edge of the substrate. A slit, which penetrates the insulating film in a thickness direction, is formed in a corner part of the insulating film. The slit is formed at a position not overlapping the circuit section.

公开(公告)号：US20170351129A1

公开(公告)日：2017-12-07

申请号：US15611860

申请日：2017-06-02

Applicant: Japan Display Inc.

Inventor： Masateru MORIMOTO ,  Koichi IGETA

IPC: G02F1/1368 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1339

CPC classification number: G02F1/1368 ,  G02F1/133345 ,  G02F1/133707 ,  G02F1/13394 ,  G02F1/134363 ,  G02F1/13624 ,  G02F1/136286 ,  G02F2201/121 ,  G02F2201/501 ,  G02F2202/02

Abstract: The present invention addresses a display unevenness in a corner of a display in an IPS liquid crystal display device. A liquid crystal display device includes: a TFT substrate including pixels formed between scanning lines extending in a first direction and arrayed in a second direction and image signal lines extending in the second direction and arrayed in the first direction, each pixel including a TFT; a counter substrate; and a liquid crystal layer between the TFT substrate and the counter substrate, wherein a common electrode is formed above the image signal line via an insulating film, the scanning line and the end portion of the common electrode do not overlap each other as seen from the above, and they have a space d1 in the first direction.