公开(公告)号：US20230317028A1

公开(公告)日：2023-10-05

申请号：US18126340

申请日：2023-03-24

Applicant: Sharp Display Technology Corporation

Inventor： Hiroshi TSUCHIYA ,  Koji MURATA ,  Takashi SATOH

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G2320/028

Abstract: A liquid crystal display device includes: an active matrix substrate including a first electrode and a second electrode configured to generate a transverse electrical field; a counter substrate including a plurality of third electrodes disposed at predetermined intervals and having a stripe pattern; a liquid crystal layer located between the active matrix substrate and the counter substrate; and a control circuit. The liquid crystal display device can display an image in a first viewing angle mode and a second viewing angle mode having a viewing angle narrower than the first viewing angle mode by the control circuit switching an amplitude and a waveform of a voltage applied to the third electrodes. The control circuit applies a common voltage having a different value to the first electrode or the second electrode in each of the first viewing angle mode and the second viewing angle mode.

公开(公告)号：US20230251522A1

公开(公告)日：2023-08-10

申请号：US18102883

申请日：2023-01-30

Applicant: Sharp Display Technology Corporation

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

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/137 ,  G02F1/13357

CPC classification number: G02F1/133531 ,  G02F1/134318 ,  G02F1/13706 ,  G02F1/134372 ,  G02F1/134363 ,  G02F1/133603 ,  G02F1/133514 ,  G02F1/133512

Abstract: Provided is a liquid crystal panel sequentially including: a first polarizing plate with a first absorption axis; a first substrate including a first electrode; a liquid crystal layer containing liquid crystal molecules; and a second substrate including a second electrode. The liquid crystal panel satisfies the following Formula (1) as well as the following Formula (2-1) or Formula (2-2):


5°≤|φ1−φ2|≤20°  (Formula 1)



5°≤|φP1−φ2|≤20°  (Formula 2-1)



65°≤|φP1−φ2|≤80°  (Formula 2-2)

wherein φ1 represents an azimuthal angle of a director of liquid crystal molecules near the first substrate, φ2 represents an azimuthal angle of a director of liquid crystal molecules near the second substrate, and φP1 represents an azimuthal angle of the first absorption axis of the first polarizing plate, each with no voltage applied.

公开(公告)号：US20230296932A1

公开(公告)日：2023-09-21

申请号：US18122725

申请日：2023-03-17

Applicant: Sharp Display Technology Corporation

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

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

CPC classification number: G02F1/1323 ,  G02F1/133531 ,  G02F1/134372 ,  G02F1/134363

Abstract: Provided is a display device including a backlight; a first liquid crystal panel; a display panel; and a second liquid crystal panel. The first liquid crystal panel includes a first substrate, a first liquid crystal layer containing first liquid crystal molecules, and a second substrate. The second liquid crystal panel includes a third substrate, a second liquid crystal layer containing second liquid crystal molecules, and a fourth substrate. The display device satisfies the following Formula (1):


|φ3−φ1|≥50°  Formula (1)

wherein φ1 represents an azimuthal angle of a director of the first liquid crystal molecules near the first substrate with no voltage applied to the first liquid crystal layer, and φ3 represents an azimuthal angle of a director of the second liquid crystal molecules near the third substrate with no voltage applied to the second liquid crystal layer.

公开(公告)号：US20230129697A1

公开(公告)日：2023-04-27

申请号：US17965816

申请日：2022-10-14

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Junichi MASUDA ,  Shugo YAGI ,  Hiroshi TSUCHIYA ,  Takashi SATOH ,  Shinji SHIMADA

IPC: G02F1/1335 ,  G02F1/13363 ,  G02F1/1343

Abstract: Provided are a liquid crystal panel capable of achieving a small light-shielding angle in a narrow viewing angle mode and a display device including the liquid crystal panel. The liquid crystal panel sequentially includes: a first polarizing plate with a first absorption axis; a first substrate including a first electrode; a liquid crystal layer containing liquid crystal molecules; and a second substrate including a second electrode, wherein in a plan view, a director of the liquid crystal molecules with no voltage applied and the first absorption axis form an angle α of not smaller than 5° and not greater than 20° or not smaller than 65° and not greater than 80°.

公开(公告)号：US20220382099A1

公开(公告)日：2022-12-01

申请号：US17752574

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 an upper layer with respect to the first substrate and including a green color filter, a transmitter electrode formed on an upper layer with respect to the plurality of color filters, a receiver electrode formed on a lower layer with respect to the plurality of color filters, and a second substrate including a pixel electrode disposed on the second substrate. The transmitter electrode includes a gap portion formed in a portion overlapping the receiver electrode in a plan view and in a portion overlapping the green color filter in a plan view.

公开(公告)号：US20250081800A1

公开(公告)日：2025-03-06

申请号：US18794409

申请日：2024-08-05

Applicant: Sharp Display Technology Corporation

Inventor： Hiroshi TSUCHIYA ,  Takashi SATOH

IPC: H10K59/50 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/139 ,  H10K59/131

Abstract: A display device includes: a plurality of pixels arranged in a matrix in a display area, wherein each of the plurality of pixels includes a reflective liquid crystal portion and a self-luminous element portion, in the reflective liquid crystal portion, a first substrate does not include a switching element, a reflector, a pixel electrode, a liquid crystal layer, and an opposite electrode form a reflective liquid crystal display element that operates in bistable liquid crystal display mode, in the self-luminous element portion, the first substrate includes: a switching element; a self-luminous display element including a first electrode, an organic layer, and a second electrode; and a coating layer disposed on a side of the liquid crystal layer of the self-luminous display element, and the coating layer is provided contiguously across the reflective liquid crystal portion and the self-luminous element portion.

公开(公告)号：US20240385478A1

公开(公告)日：2024-11-21

申请号：US18636694

申请日：2024-04-16

Applicant: Sharp Display Technology Corporation

Inventor： Takako KOIDE ,  Takashi SATOH

IPC: G02F1/1335

Abstract: Provided is a liquid crystal display device including: a first substrate; a second substrate opposite to the first substrate; and a liquid crystal layer between the first substrate and the second substrate, and includes pixels arranged in a matrix pattern. The pixels each include a reflective region in which display is provided in a reflective mode and a transmissive region in which display is provided in a transmissive mode. At least one of the pixels further includes a light blocking region inside the transmissive region. The second substrate includes a second substrate side insulating layer and a color filter layer sequentially toward the liquid crystal layer. The second substrate side insulating layer is placed in the reflective region and the light blocking region. A film thickness of the color filter layer in the transmissive region is greater than a film thickness of the color filter layer in the reflective region.

公开(公告)号：US20240111195A1

公开(公告)日：2024-04-04

申请号：US18239090

申请日：2023-08-28

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Akira HIRAI ,  Hiroshi TSUCHIYA ,  Takashi SATOH ,  Akira SAKAI ,  Shinji SHIMADA

IPC: G02F1/1362 ,  G02F1/13

CPC classification number: G02F1/136209 ,  G02F1/1323

Abstract: Provided is a liquid crystal display device including a liquid crystal panel including in the following order an active matrix substrate, a liquid crystal layer, and a counter substrate. The active matrix substrate includes in the following order a first electrode and a second electrode including a first linear electrode portion extending in a first direction. The counter substrate includes a third electrode including second linear electrode portions extending in a second direction crossing the first direction, and a fourth electrode including an island-shaped electrode portion as a floating electrode. The island-shaped electrode portion is disposed between the second linear electrode portions in a plan view, overlaps an optical aperture of one of two pixels adjacent to each other along the second direction, and does not overlap an optical aperture of the other of the two pixels.

公开(公告)号：US20230350250A1

公开(公告)日：2023-11-02

申请号：US18140542

申请日：2023-04-27

Applicant: Sharp Display Technology Corporation

Inventor： Hiroyuki HAKOI ,  Takashi SATOH

IPC: G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/134336 ,  G02F1/133553 ,  G02F1/133514 ,  G02F1/13439

Abstract: A liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer. Each pixel includes a reflection region and a transmission region. The first substrate includes a reflecting layer, a first insulating layer, and a pixel electrode. The thickness of the liquid crystal layer in the transmission region is greater than the thickness of the liquid crystal layer in the reflection region, and the liquid crystal layer has a twist angle of substantially 0 degree. A surface of the first substrate that faces the liquid crystal layer includes an upper step portion, a lower step portion, and an inclined portion. The length L1 of a portion of the inclined portion included in the reflection region and the length L2 of a portion of the lower step portion included in the reflection region satisfy the relationship L1+L2≤1.81·L1.

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.