公开(公告)号：US12135457B2

公开(公告)日：2024-11-05

申请号：US18430928

申请日：2024-02-02

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Koichi Igeta ,  Shinichiro Oka ,  Yasushi Tomioka ,  Junji Kobashi ,  Hiroyuki Yoshida

IPC: G02B6/27 ,  G02F1/13

Abstract: According to one embodiment, a liquid crystal optical element includes an optical waveguide including a first main surface and a second main surface opposed to the first main surface, an alignment film disposed on the second main surface, a liquid crystal layer which overlaps the alignment film, which includes cholesteric liquid crystals, and which reflects at least part of light incident through the optical waveguide toward the optical waveguide, and a transparent first protective layer which overlaps the liquid crystal layer, and which is formed of a water-soluble polymer or a fluorine-based resin.

公开(公告)号：US11982825B2

公开(公告)日：2024-05-14

申请号：US18319000

申请日：2023-05-17

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Koichi Igeta ,  Shinichiro Oka ,  Yasushi Tomioka ,  Hiroyuki Yoshida

IPC: G02B5/30 ,  C09K19/36 ,  C09K19/54 ,  G02B5/18

CPC classification number: G02B5/3016 ,  C09K19/36 ,  C09K19/54 ,  G02B5/1833 ,  G02B5/1857

Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate including a main surface, an alignment film disposed on the main surface, and a liquid crystal layer overlapping the alignment film and including a cholesteric liquid crystal including liquid crystal molecules stacked helically and an additive exhibiting a liquid crystalline property. In the liquid crystal layer, a reflective surface along which alignment directions of the liquid crystal molecules are identical is inclined with respect to the main surface.

公开(公告)号：US11765925B2

公开(公告)日：2023-09-19

申请号：US18075537

申请日：2022-12-06

Applicant: Japan Display Inc.

Inventor： Masumi Nishimura ,  Shinichiro Oka

IPC: G02F1/1339 ,  G02F1/1333 ,  H10K50/844 ,  H10K50/842 ,  H10K50/86 ,  H10K59/12 ,  H10K77/10 ,  H10K102/00

CPC classification number: H10K50/8426 ,  G02F1/1339 ,  G02F1/133305 ,  H10K50/844 ,  G02F2201/50 ,  H10K50/86 ,  H10K59/12 ,  H10K77/111 ,  H10K2102/311

Abstract: A display device includes a flexible substrate including a first region including a display region, a second region including a curved region, and a third region including a terminal region; an electro-optical element located in the display region; and a resin layer continuously extending from the first region to the third region.

公开(公告)号：US11256144B2

公开(公告)日：2022-02-22

申请号：US17114569

申请日：2020-12-08

Applicant: Japan Display Inc.

Inventor： Masumi Nishimura ,  Shinichiro Oka

IPC: G02F1/1339 ,  H01L51/52 ,  G02F1/1333 ,  H01L27/32 ,  H01L51/00

Abstract: A display device includes a flexible substrate including a first region including a display region, a second region including a curved region, and a third region including a terminal region; an electro-optical element located in the display region; and a resin layer continuously extending from the first region to the third region.

公开(公告)号：US11119351B2

公开(公告)日：2021-09-14

申请号：US17148637

申请日：2021-01-14

Applicant: Japan Display Inc.

Inventor： Yosuke Hyodo ,  Toshiyuki Higano ,  Yoshiro Aoki ,  Shinichiro Oka

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1368

Abstract: The display device includes: a first substrate; a second substrate; and a liquid crystal layer placed between the first substrate and the second substrate. The first substrate and the second substrate have a display area and a frame area around the display area. The frame area has a seal material placed between the first substrate and the second substrate. The second substrate has: a second resin substrate; in the display area, a first multilayer layer placed on a side of the second resin substrate facing the liquid crystal layer, the first multilayer layer including a first inorganic insulating film, a light shielding member, and an overcoat film; and in the frame area, a second multilayer layer placed on the side of the second resin substrate facing the liquid crystal layer, the second multilayer layer including the light shielding member and the overcoat film.

公开(公告)号：US10901272B2

公开(公告)日：2021-01-26

申请号：US16654227

申请日：2019-10-16

Applicant: Japan Display Inc.

Inventor： Masaaki Kabe ,  Kojiro Ikeda ,  Shinichiro Oka

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/137

Abstract: According to an aspect, a liquid crystal display device includes: a first substrate provided with a first electrode portion that includes a plurality of strip electrodes arranged in a first direction and that is configured to generate a transverse electric field in the first direction; a liquid crystal layer in which liquid crystal molecules are oriented in the first direction when the transverse electric field is not generated; a second substrate facing the first substrate across the liquid crystal layer; and an electrode provided at the second substrate.

公开(公告)号：US10892440B2

公开(公告)日：2021-01-12

申请号：US15996620

申请日：2018-06-04

Applicant: Japan Display Inc.

Inventor： Masumi Nishimura ,  Shinichiro Oka

IPC: H01L51/52 ,  G02F1/1333 ,  G02F1/1339 ,  H01L27/32 ,  H01L51/00

Abstract: A display device includes a flexible substrate including a first region including a display region, a second region including a curved region, and a third region including a terminal region; an electro-optical element located in the display region; and a resin layer continuously extending from the first region to the third region.

公开(公告)号：US10437367B2

公开(公告)日：2019-10-08

申请号：US15794445

申请日：2017-10-26

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Shinichiro Oka ,  Toshinori Uehara ,  Hiroshi Mizuhashi ,  Yoshitoshi Kida

IPC: G06F3/041 ,  G02F1/1343 ,  G02F1/1362 ,  G06F3/044 ,  G06K9/00 ,  G06K9/20 ,  G02F1/1333

Abstract: A display apparatus includes a basement, a display functional layer, a first electrode, a guard electrode, and a detection controller. The basement has a first surface and a second surface opposite to the first surface. The display functional layer is arranged on the side of the second surface of the basement. The first electrode is arranged between the basement and the display functional layer and detects an object in contact with or in proximity to the first surface. The guard electrode is arranged between the first electrode and the basement and supplied with a guard signal. The guard signal suppresses a change in capacitance generated between the first electrode and the guard electrode. The detection controller is a controller to which a signal based on a change in capacitance of the first electrode is output from the first electrode.

公开(公告)号：US10175515B2

公开(公告)日：2019-01-08

申请号：US15448681

申请日：2017-03-03

Applicant: Japan Display Inc.

Inventor： Shinichiro Oka ,  Toshinari Sasaki

IPC: G02F1/1333 ,  G02F1/1368 ,  G02F1/1362 ,  G02F1/1345 ,  G02F1/1343

Abstract: An image display device includes a first substrate; a second substrate located to face the first substrate; an electro-optical layer between the first substrate and the second substrate; a plurality of pixel electrodes located between the electro-optical layer and the first substrate; a plurality of switching elements electrically connected with the plurality of pixel electrodes respectively; and a color filter included in a layer between the first substrate and the plurality of switching elements. A side of the first substrate opposite to a side thereof facing the electro-optical layer is an image display side.

公开(公告)号：US09601071B2

公开(公告)日：2017-03-21

申请号：US14510471

申请日：2014-10-09

Applicant: Japan Display Inc.

Inventor： Daiichi Suzuki ,  Yukio Tanaka ,  Kenji Nakao ,  Kazuhiro Nishiyama ,  Shinichi Komura ,  Shinichiro Oka ,  Mika Oiwa

IPC: G09G3/36 ,  G02F1/1343

CPC classification number: G09G3/3648 ,  G02F1/1337 ,  G02F1/134363 ,  G02F1/1368 ,  G02F2001/134372 ,  G09G3/3614 ,  G09G2300/0426 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/0435

Abstract: According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel and a controller, wherein a frame frequency falls within a range of 1 Hz to 10 Hz, an off-leak current of each of the TFTs has a value of 1×10−15 A or less, a resistivity of a liquid crystal and a resistivity of an alignment film both fall within one of a first range and a second range, the first range being 1×1013 to 5×1013 Ω·cm, the second range being 5×1013 to 5×1014 Ω·cm, and a relationship of “R1×C1≈R2×C2” is satisfied, where R1 is a resistance and C1 is a capacity with respect to each pixel, R2 is a resistance and C2 is a capacity with respect to each pixel.