公开(公告)号：US11982910B2

公开(公告)日：2024-05-14

申请号：US18148027

申请日：2022-12-29

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Tenfu Nakamura ,  Kentaro Okuyama

IPC: G02F1/1343 ,  G02F1/1334

CPC classification number: G02F1/134309 ,  G02F1/1334 ,  G02F1/134318

Abstract: According to one embodiment, a display device includes a first substrate having a first transparent substrate and a pixel electrode, a second substrate having a second transparent substrate, a first common electrode, a second common electrode, and an insulating film disposed between the first common electrode and the second common electrode, and a liquid crystal layer. The first common electrode is disposed between the liquid crystal layer and the insulating film, and includes a first opening and a first electrode portion. The second common electrode is disposed between the insulating film and the second transparent substrate, and includes a second electrode portion overlapping the first opening.

公开(公告)号：US11740510B2

公开(公告)日：2023-08-29

申请号：US17651845

申请日：2022-02-21

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Tenfu Nakamura ,  Kentaro Okuyama ,  Zhengyi Gou ,  Hisanori Kawakami

IPC: G02F1/13357 ,  G02F1/1362 ,  G02F1/1368

CPC classification number: G02F1/133615 ,  G02F1/1368 ,  G02F1/136286

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer, a first light guide element and a light-emitting element. The liquid crystal layer contains stringy polymers and liquid crystal molecules. The first light guide element includes a third transparent substrate including a side surface and a main surface, and a transparent layer disposed on the main surface and having a refractive index lower than that of the third transparent substrate. The light-emitting element opposes the side surface, and the third transparent substrate is adhered to the second transparent substrate while interposing the transparent layer therebetween. The light-emitting element is disposed on the second transparent substrate.

公开(公告)号：US11243426B2

公开(公告)日：2022-02-08

申请号：US16700346

申请日：2019-12-02

Applicant: Japan Display Inc.

Inventor： Chikyu Nakaoka ,  Masaaki Kabe ,  Tatsuya Yata ,  Kojiro Ikeda

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/13 ,  G02F1/13357 ,  G02B5/30 ,  G02B5/18 ,  G02B5/02 ,  G02B5/04 ,  F21V8/00 ,  G02B5/20 ,  G02B6/293 ,  G02B6/34

Abstract: According to one embodiment, a display device includes a first arrangement layer and a second arrangement layer. The first layer includes a first pixel, a second pixel, and a third pixel are arranged periodically in one direction. The second layer is opposed to the first layer, and the second layer includes a first element, a second element, and a third element which are arranged periodically to correspond to the first pixel, the second pixel, and the third pixel, respectively, and separate emission light to light of wavelength corresponding to a first color, light of wavelength corresponding to a second color, and light of wavelength corresponding to a third color to be emitted on the first pixel, the second pixel, and the third pixel, respectively.

公开(公告)号：US11119374B2

公开(公告)日：2021-09-14

申请号：US16808532

申请日：2020-03-04

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Kentaro Okuyama ,  Tenfu Nakamura

IPC: G02F1/1333 ,  G02F1/1362 ,  G09G3/36

Abstract: According to one embodiment, a display device includes a liquid crystal layer between a first substrate and a second substrate. The first substrate includes a wiring line and a pixel electrode. The liquid crystal layer contains a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer contains a first polymer in an area overlapping the wiring line and a second polymer in an area overlapping the pixel electrode. The first polymer includes a first portion extending in a direction different from the first direction. The second polymer includes a second portion extending in a direction different from the first direction. A density of the first portion is higher than a density of the second portion.

公开(公告)号：US10789899B2

公开(公告)日：2020-09-29

申请号：US15957336

申请日：2018-04-19

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Masaaki Kabe ,  Jin Ota

IPC: G09G3/36 ,  G09G3/00

Abstract: According to an aspect, a display device includes an image display panel including: sub-pixel rows, in each of which sub-pixels for displaying different colors are periodically arrayed in a first direction, are regularly arranged in a second direction different from the first direction; signal lines in parallel to sub-pixel columns in which the sub-pixels are successively arranged in the second direction; and scan lines that sequentially select each sub-pixel row. Each of m (integer ≥2) selector signals selects n (integer ≥1) pairs of the signal lines each supplied with two signals each having a mutually reverse polarity, within a period during which each sub-pixel row is selected by a corresponding scan line, and a sum of potential changes of the n pairs of the signal lines selected by each selector signal is substantially zero when each sub-pixel row is sequentially selected by the corresponding scan line.

公开(公告)号：US10551694B2

公开(公告)日：2020-02-04

申请号：US15798504

申请日：2017-10-31

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Masaaki Kabe ,  Shinichiro Oka ,  Chikyu Nakaoka

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

Abstract: According to one embodiment, a liquid crystal device includes a first substrate including a first electrode and a second electrode, a second substrate, a liquid crystal layer, and the second electrode is located on a side of the liquid crystal layer with respect to the first electrode and includes a first opening, the first opening is formed into a polygonal shape including a base portion and at least one projecting portion projecting from the base portion along a first direction, a width of the base portion along the first direction is greater than a width of the projecting portion along the first direction, and the liquid crystal layer exhibits transparency while no voltage being applied and scattering property while voltage being applied.

公开(公告)号：US10268089B2

公开(公告)日：2019-04-23

申请号：US14717289

申请日：2015-05-20

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Akira Sakaigawa ,  Masaaki Kabe ,  Kojiro Ikeda ,  Amane Higashi

IPC: G02F1/1335 ,  G02F1/1343

Abstract: According to one embodiment, a display device includes a display panel, a light source, a light guide and a prism sheet. The display panel includes a display area in which unit pixels each containing first sub-pixels and second sub-pixels are arranged along a first direction and a second direction. In the display area, the first sub-pixels have a width different from that of the second sub-pixel in at least one of the first direction and the second direction, or each unit pixel contains different numbers of first sub-pixels and second sub-pixels. The prism sheet is interposed between the light guide and the display panel and includes prisms extending along a third direction inclined with respect to the second direction by an acute angle of inclination.

公开(公告)号：US09995983B2

公开(公告)日：2018-06-12

申请号：US15365245

申请日：2016-11-30

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Masaaki Kabe ,  Shinichiro Oka ,  Akira Sakaigawa

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

CPC classification number: G02F1/137 ,  G02F1/133553 ,  G02F1/133707 ,  G02F1/134309 ,  G02F1/134363 ,  G02F1/13439 ,  G02F2001/13756

Abstract: According to one embodiment, a liquid crystal device includes a first substrate including a first electrode and a second electrode opposed to the first electrode, a second substrate opposed to the first substrate, and a liquid crystal layer including liquid crystal molecules held between the first substrate and the second substrate, wherein the second electrode is positioned closer to the liquid crystal layer than is the first electrode and has a polygonal-shaped first opening including at least one projection, and the liquid crystal layer indicates transparency when no voltage is applied thereto and indicates scattering when a voltage is applied thereto.

公开(公告)号：US09837012B2

公开(公告)日：2017-12-05

申请号：US15084531

申请日：2016-03-30

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Masaaki Kabe ,  Akira Sakaigawa

IPC: G09G5/02 ,  G09G3/20

CPC classification number: G09G3/2003 ,  G09G2300/0452 ,  G09G2340/0457

Abstract: A display device 10 includes are arranged in a matrix form and to which image information is input, and a signal processing unit 20. The signal processing unit 20 includes a rendering position deciding unit that decides whether or not a sub-pixel rendering process of changing input signal values of sub-pixels of a second pixel among a first pixel, the second pixel, and the third pixel is performed, a pattern information acquiring unit that acquires an arrangement of the sub-pixels in a processing direction of either of a portrait mode and a landscape mode as pattern information indicating a first arrangement pattern or a second arrangement pattern, and a rendering unit that performs a first sub-pixel rendering process or a second sub-pixel rendering process on the input signals of the sub-pixels of the second pixel based on the decision of the rendering position deciding unit and the pattern information.

公开(公告)号：US09728161B2

公开(公告)日：2017-08-08

申请号：US14692957

申请日：2015-04-22

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Toshiyuki Nagatsuma ,  Masaaki Kabe ,  Amane Higashi ,  Tae Kurokawa ,  Fumitaka Gotoh ,  Akira Sakaigawa

IPC: G09G5/02 ,  G09G5/10 ,  G09G3/36

CPC classification number: G09G5/10 ,  G09G3/3607 ,  G09G3/3648 ,  G09G5/02 ,  G09G2300/0452 ,  G09G2340/0457 ,  G09G2340/06 ,  G09G2360/16

Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.