公开(公告)号：US20220382098A1

公开(公告)日：2022-12-01

申请号：US17752561

申请日：2022-05-24

Applicant: Sharp Display Technology Corporation

Inventor： Kazutoshi KIDA ,  Kiyoshi MINOURA ,  Takashi SATOH ,  Shunsuke NOICHI ,  Yasuhiro SUGITA ,  Chiaki MINARI

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G06F3/041 ,  G06F3/044

Abstract: An in-cell touch panel device includes a first substrate, a plurality of color filters formed on a layer on an opposite side of a touch surface with respect to the first substrate, a transmitter electrode formed on a layer on an opposite side of the touch surface with respect to the plurality of color filters, a receiver electrode formed on a layer closer to the touch surface side with respect to the plurality of color filters, and a second substrate, a pixel electrode being disposed on the second substrate. The transmitter electrode includes a gap portion formed in a portion overlapping a space between adjacent ones of the plurality of color filters in a plan view.

公开(公告)号：US20240210721A1

公开(公告)日：2024-06-27

申请号：US18521019

申请日：2023-11-28

Applicant: Sharp Display Technology Corporation

Inventor： Takahiro SASAKI ,  Hiromi MATSUMOTO ,  Takashi SATOH ,  Akira SAKAI

IPC: G02B30/25 ,  G02F1/1335 ,  G02F1/1339

CPC classification number: G02B30/25 ,  G02F1/133512 ,  G02F1/1339

Abstract: Provided are an active retarder for 3D image display with an improved balance of display quality between the left and right eyes and with sufficiently reduced crosstalk, and a display device using the same. The active retarder for 3D image display, the active retarder including: an optical laminate that includes: a pair of substrates; a pair of electrodes disposed between the pair of substrates; a liquid crystal layer formed from a liquid crystal material containing liquid crystal molecules; columnar spacers; and light-blocking components each shielding the corresponding columnar spacer from light limitedly.

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.

公开(公告)号：US20230015072A1

公开(公告)日：2023-01-19

申请号：US17859075

申请日：2022-07-07

Applicant: Sharp Display Technology Corporation

Inventor： Takashi SATOH ,  Takahiro SASAKI ,  Hiroyuki HAKOI ,  Ming NI

IPC: G02F1/1337 ,  G02F1/1335 ,  G02F1/1333

Abstract: A liquid crystal display device includes a first substrate; a second substrate; and a vertical alignment-type liquid crystal layer. The first substrate includes a backplane circuit, a first interlayer insulating layer covering the backplane circuit, a first reflective electrode provided on the first interlayer insulating layer and including a first region located in each of pixels and a second region located between any two adjacent pixels, a second interlayer insulating layer covering the first reflective electrode, and a pixel electrode provided on the second interlayer insulating layer in each pixel. The pixel electrode is electrically connected with the backplane circuit in first and second contact holes formed in the first and second interlayer insulating layers. The first substrate further includes a second reflective electrode provided on the second interlayer insulating layer so as to overlap the first contact hole as seen in a direction normal to a display surface.

公开(公告)号：US20240420657A1

公开(公告)日：2024-12-19

申请号：US18737926

申请日：2024-06-07

Applicant: Sharp Display Technology Corporation

Inventor： Akira HIRAI ,  Koji MURATA ,  Takashi SATOH

IPC: G09G3/36

Abstract: A liquid crystal display device comprises a liquid crystal panel and a control unit configured to drive the liquid crystal panel, wherein the liquid crystal panel includes a first substrate, a liquid crystal layer, and a second substrate, all of which are provided in a stated order, the first substrate includes a first electrode and a second electrode either stacked via a first insulating layer or disposed opposite each other, the second substrate includes a third electrode, the control unit includes a display mode switching unit, a gamma correction table memory unit, a gamma correction unit, and an image data output unit, the display mode switching unit switches between narrow viewing angle mode and wide viewing angle mode by controlling a voltage applied to the third electrode, the gamma correction table memory unit contains gamma correction tables by each of which a gray level is associated with an application voltage to the first electrode and/or the second electrode, the gamma correction unit acquires different gamma correction tables from the gamma correction table memory unit for the narrow viewing angle mode and for the wide viewing angle mode, performs gamma correction on original image data based on each of the gamma correction tables, and outputs resultant gamma-corrected image data to the image data output unit, and the image data output unit outputs a liquid crystal panel drive signal to the liquid crystal panel and adjusts the application voltage to the first electrode and/or the second electrode.

公开(公告)号：US20240345438A1

公开(公告)日：2024-10-17

申请号：US18624798

申请日：2024-04-02

Applicant: Sharp Display Technology Corporation

Inventor： Hiromi MATSUMOTO ,  Takahiro SASAKI ,  Takashi SATOH ,  Akira SAKAI

IPC: G02F1/1339 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13363

CPC classification number: G02F1/1339 ,  G02F1/133308 ,  G02F1/133354 ,  G02F1/133531 ,  G02F1/13363

Abstract: There is provided a liquid crystal panel provided with a display region and a frame region and including a first substrate and a second substrate disposed facing the first substrate. In the display region, a liquid crystal layer is disposed between the first substrate and the second substrate. In the frame region, a sealing portion is disposed between the first substrate and the second substrate. The first substrate includes a first support substrate and a first substrate-side insulating layer contacting the first support substrate in order toward the liquid crystal layer side. The second substrate includes a protrusion protruding to the liquid crystal layer side. The first substrate-side insulating layer includes a first thickness portion having a flat surface on the liquid crystal layer side, and a second thickness portion protruding to the liquid crystal layer side relative to the first thickness portion and disposed to face the protrusion.

公开(公告)号：US20240176192A1

公开(公告)日：2024-05-30

申请号：US18384131

申请日：2023-10-26

Applicant: Sharp Display Technology Corporation

Inventor： Mariko HONDA ,  Nobuhiro WAKA ,  Hiroyuki HAKOI ,  Takahiro SASAKI ,  Takashi SATOH ,  Akira SAKAI ,  Seiji MAEDA

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1337

CPC classification number: G02F1/134345 ,  G02F1/133345 ,  G02F1/133514 ,  G02F1/133553 ,  G02F1/133738 ,  G02F1/133742 ,  G02F2201/52

Abstract: A liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer. Each pixel includes a reflective region and a transmissive region. The first substrate includes a reflective layer, an interlayer insulating layer provided to cover the reflective layer, and a pixel electrode provided on the interlayer insulating layer in each pixel. The interlayer insulating layer has a recess portion which is defined by a bottom surface and an inclined side surface and at least a part of which is located in the transmissive region. A depth of the recess portion of the interlayer insulating layer is 0.5 μm or more, and an inclination angle of the inclined side surface of the recess portion is 25° or less.

公开(公告)号：US20240160052A1

公开(公告)日：2024-05-16

申请号：US18379427

申请日：2023-10-12

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Junichi MASUDA ,  Shugo YAGI ,  Akira HIRAI ,  Hiroshi TSUCHIYA ,  Takashi SATOH ,  Akira SAKAI ,  Kiyoshi MINOURA

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1347

CPC classification number: G02F1/1323 ,  G02F1/133528 ,  G02F1/1347

Abstract: A viewing angle-controlling liquid crystal panel sequentially includes a first polarizing plate; a first liquid crystal panel; a second polarizing plate; a second liquid crystal panel; and a third polarizing plate, wherein an azimuthal angle φP1 of the absorption axis of the first polarizing plate, an azimuthal angle φ1 of a director of liquid crystal molecules near the first substrate and an azimuthal angle φ2 of a director of liquid crystal molecules near the second substrate in the first liquid crystal panel, an azimuthal angle φP2 of the absorption axis of the second polarizing plate, an azimuthal angle φ3 of a director of liquid crystal molecules near the third substrate and an azimuthal angle φ4 of a director of liquid crystal molecules near the fourth substrate in the second liquid crystal panel, and an azimuthal angle φP3 of the absorption axis of the third polarizing plate satisfy specific formulas.

公开(公告)号：US20230101325A1

公开(公告)日：2023-03-30

申请号：US17882249

申请日：2022-08-05

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Hiroshi TSUCHIYA ,  Takashi SATOH ,  Shinji SHIMADA

IPC: G02F1/139 ,  G02F1/1337 ,  G02F1/137 ,  G02F1/1335 ,  G02F1/1347 ,  G02F1/1343 ,  G02F1/13

Abstract: The liquid crystal panel of the present invention sequentially includes: a first substrate including a first electrode; a first alignment film; a liquid crystal layer containing liquid crystal molecules having a positive anisotropy of dielectric constant; a second alignment film; and a second substrate including a second electrode, the liquid crystal molecules being homogeneously aligned with no voltage applied between the first electrode and the second electrode, a polar anchoring energy 2EA and an azimuthal anchoring energy 2EB of the second alignment film being smaller than a polar anchoring energy 1EA and an azimuthal anchoring energy 1EB of the first alignment film, respectively, the polar anchoring energy 2EA of the second alignment film being not greater than the azimuthal anchoring energy 2EB of the second alignment film.