公开(公告)号：US20230213798A1

公开(公告)日：2023-07-06

申请号：US18092858

申请日：2023-01-03

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Hiroshi TSUCHIYA ,  Shinpei HIGASHIDA ,  Takahiro SASAKI ,  Takashi SATOH ,  Shinji SHIMADA

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/133

CPC classification number: G02F1/1323 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/134309 ,  G02F1/13306 ,  G02F1/1336

Abstract: The liquid crystal display device of the present invention includes an active matrix substrate including a first electrode, a first insulating layer, and second electrodes including a first linear electrode; a color filter substrate including a black matrix, a color filter layer, a third electrode including second linear electrodes, and a fourth electrode which is a floating electrode. The third electrode and the fourth electrode are disposed between the black matrix and the liquid crystal layer. The second linear electrodes extend in a second direction and each overlap a portion of the black matrix extending in the second direction. The fourth electrode is disposed between the second linear electrodes and overlaps the black matrix in a plan view. The control circuit switches between application of driving voltage and application of constant voltage to the third electrode.

公开(公告)号：US20240105731A1

公开(公告)日：2024-03-28

申请号：US18238124

申请日：2023-08-25

Applicant: Sharp Display Technology Corporation

Inventor： Kuniaki OKADA ,  Shinpei HIGASHIDA

IPC: H01L27/12 ,  G02F1/1362

CPC classification number: H01L27/1218 ,  G02F1/136286 ,  G02B27/0172

Abstract: An active matrix substrate includes a substrate and a plurality of pixels located on the substrate. Each of the pixels includes an oxide semiconductor layer, a first insulator covering the oxide semiconductor layer, a first contact hole located at the first insulator, a first extraction electrode located on the first insulator and in the first contact hole, and connected to the oxide semiconductor layer, a second insulator covering the first extraction electrode, a second contact hole located at the second insulator, a second extraction electrode located on the second insulator and in the second contact hole, and connected to the first extraction electrode, and a pixel electrode connected to the second extraction electrode. The first and second extraction electrodes are light-transmissive, and a portion of a side surface of at least one of the first and second contact holes is not covered with the first and second extraction electrodes.

公开(公告)号：US20230236448A1

公开(公告)日：2023-07-27

申请号：US18097171

申请日：2023-01-13

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Hiroshi TSUCHIYA ,  Shinpei HIGASHIDA ,  Takahiro SASAKI ,  Takashi SATOH ,  Shinji SHIMADA

IPC: G02F1/13 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/137 ,  F21V8/00

CPC classification number: G02F1/1323 ,  G02F1/134345 ,  G02F1/134336 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/13439 ,  G02F1/136286 ,  G02F1/137 ,  G02B6/0038 ,  G02B2207/123

Abstract: Provided is a liquid crystal display device that can switch between the privacy mode and the public mode and achieve a high contrast ratio even during display in the privacy mode. The liquid crystal display panel includes: a liquid crystal panel; and a control circuit. The active matrix substrate sequentially includes a first substrate, a first electrode, a first insulating layer, and second electrodes each including a first linear electrode. The color filter substrate includes a second substrate, a black matrix, a color filter layer, a third electrode, and a fourth electrode which is disposed between the black matrix and the third electrode and to which constant voltage is applied. The third electrode includes second linear electrodes and overlaps a portion of the black matrix in a plan view. The control circuit switches between application of driving voltage and application of constant voltage to the third electrode.