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公开(公告)号：US11811002B2
公开(公告)日：2023-11-07
申请号：US17240469
申请日：2021-04-26
Applicant: Japan Display Inc.
Inventor： Masanobu Ikeda , Osamu Ito , Yasuhiro Kanaya , Tadafumi Ozaki
IPC: H01L33/32 , H01L25/075 , H01L33/06
CPC classification number: H01L33/32 , H01L25/0753 , H01L33/06
Abstract: According to an aspect, a display device includes: a substrate; a plurality of pixels provided on the substrate; and a first light emitting element and a second light emitting element that are included in each of the pixels. A light emitting layer of the first light emitting element includes gallium nitride to which europium is added, and a light emitting layer of the second light emitting element includes a multi-quantum well structure in which indium gallium nitride and gallium nitride are layered.
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公开(公告)号：US11158268B2
公开(公告)日：2021-10-26
申请号：US16923223
申请日：2020-07-08
Applicant: Japan Display Inc.
Inventor： Tadafumi Ozaki
IPC: G09G3/34 , G09G3/36 , G02F1/1334
Abstract: According to an aspect, a display device, includes: a display panel that includes a polymer-dispersed liquid crystal sealed between two facing substrates and is configured to display a frame image by arranging a plurality of line images in a scanning direction; and a light source that is configured to emit light from one side surface side of the display panel. One frame period assigned to the frame image includes an image display period and a luminance correction period, and a total luminance of the display panel during the luminance correction period is increased with decreasing distance from an opposite side of the one side surface side.
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公开(公告)号：US10665197B2
公开(公告)日：2020-05-26
申请号：US16386724
申请日：2019-04-17
Applicant: Japan Display Inc.
Inventor： Tadafumi Ozaki
Abstract: According to one embodiment, a display device includes a display panel, a light source unit and a control unit. The control unit sets a display area to a second transparent state in which a degree of transparency is higher than a degree of transparency of a first transparent state in a reset period. The control unit displays an image in an object area, sets a non-object area to the first transparent state and holds a non-rewrite area in the second transparent state in a rewrite period. The gate driver drives second gate lines at a second drive frequency higher than a first drive frequency at which the gate driver drives first gate lines or selectively drives the first gate lines in the rewrite period.
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公开(公告)号：US10453376B2
公开(公告)日：2019-10-22
申请号：US15442995
申请日：2017-02-27
Applicant: Japan Display Inc.
Inventor： Tadafumi Ozaki , Kazuhiko Sako , Tsutomu Harada , Naoyuki Takasaki
IPC: G09G3/20
Abstract: An image display device includes a first pixel data calculator calculating first pixel data for a pixel of attention based on a first error value for a pixel adjacent thereto in the same error diffusion block; a second pixel data calculator calculating second pixel data for the pixel of attention based on a corrected error value for the adjacent pixel; a first error value calculator calculating the first error value based on the first pixel data; a second error value calculator calculating a second error value based on the second pixel data; and a corrected error value calculator calculating the corrected error value by correcting the second error value in a direction in which the second error value approaches the first error value in accordance with whether the pixel of attention is located within a predetermined range from a border among a plurality of error diffusion blocks.
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Patent Agency Ranking
公开(公告)号：US20170162128A1
公开(公告)日：2017-06-08
申请号：US15367091
申请日：2016-12-01
Applicant: Japan Display Inc.
Inventor： Susumu Kimura , Kazuhiko Sako , Tadafumi Ozaki , Naoyuki Takasaki , Fumitaka Gotoh , Tsutomu Harada
CPC classification number: G09G3/342 , G02B6/0068 , G09G2320/0626 , G09G2320/0646 , G09G2330/12 , G09G2360/16 , H05B33/0827 , H05B33/083 , H05B33/089
Abstract: According to one embodiment, a light source device includes a plurality of light emitting elements including at least first and second light emitting elements, lightguide, first circuit, second circuit, and controller. The lightguide includes a first surface on which light from light emitting elements is incident and a second surface through which the light exits. The first circuit connects light emitting elements in series. The second circuit can bypass each of light emitting elements. The controller turns on light emitting elements using the first circuit if light emitting elements function normally, and if one of light emitting elements functions abnormally, the controller turns on the light emitting element functioning normally using the second circuit.
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公开(公告)号：US12300686B2
公开(公告)日：2025-05-13
申请号：US18583418
申请日：2024-02-21
Applicant: Japan Display Inc.
Inventor： Masanobu Ikeda , Yasuhiro Kanaya , Tadafumi Ozaki
Abstract: According to an aspect, a display apparatus includes: a substrate; a plurality of pixels arrayed on the substrate; a plurality of inorganic light-emitting elements that are provided in the pixels, respectively; a transistor provided to a first surface of the substrate and coupled to one of the inorganic light-emitting elements; wiring provided to the first surface of the substrate and coupled to the transistor; and a circular polarization plate provided on a first side of the substrate.
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公开(公告)号：US12046213B2
公开(公告)日：2024-07-23
申请号：US17869000
申请日：2022-07-20
Applicant: Japan Display Inc.
Inventor： Kazunari Tomizawa , Tadafumi Ozaki
IPC: G09G3/34 , G02F1/13357 , G09G3/36
CPC classification number: G09G3/3677 , G02F1/1336 , G09G3/3406 , G09G3/342 , G09G3/3426 , G09G2310/024 , G09G2310/08 , G09G2320/0252
Abstract: A display device includes: a display panel with pixel rows; a light source device having light emission regions; and a controller configured to control light emission of the light emission regions. A second period is shorter than a first period. The first period is a period from a drive timing of one or more pixel rows that are driven first to a drive timing of one or more other pixel rows that are driven last. The second period is a period from a light emission timing of one or more light emission regions that emit light first to a light emission timing of one or more other light emission regions that emit light last. The light emission timing of the one or more light emission regions that emit light first is different from the light emission timing of the one or more other light emission regions that emit light last.
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公开(公告)号：US11621291B2
公开(公告)日：2023-04-04
申请号：US17103979
申请日：2020-11-25
Applicant: Japan Display Inc.
Inventor： Masanobu Ikeda , Yasuhiro Kanaya , Tadafumi Ozaki
Abstract: A display device includes a substrate, a plurality of pixels, a plurality of inorganic light-emitting elements, and a first light-shielding portion. The pixels are arrayed on the substrate. The inorganic light-emitting elements are provided corresponding to the respective pixels and each have a first side surface and a second side surface opposite to the first side surface. The first light-shielding portion is electrically coupled to the cathode of the corresponding inorganic light-emitting element and prevents output of light traveling in a direction intersecting the first side surface of the inorganic light-emitting element.
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公开(公告)号：US11508292B2
公开(公告)日：2022-11-22
申请号：US17407344
申请日：2021-08-20
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Tadafumi Ozaki , Kazunari Tomizawa
Abstract: According to one embodiment, a display device includes a first power supply line, a second power supply line, a reset line, pixels, gate lines, control wiring lines, source lines, a first driver and a second driver. Each of the pixels includes a drive transistor, a light emitting element, a pixel switch, a storage capacitor and a reset switch. The reset switch is connected between the reset line and a gate electrode of the drive transistor, and switched between an ON state and an OFF state by a second control signal provided via a corresponding control wiring line among the control wiring lines.
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