公开(公告)号：US12135478B2

公开(公告)日：2024-11-05

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 ,  G02F1/13357 ,  G02F1/1343 ,  G02F1/137

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：US11966125B2

公开(公告)日：2024-04-23

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 ,  G02F1/133514 ,  G02F1/133553 ,  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：US12265307B2

公开(公告)日：2025-04-01

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

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：US12159602B2

公开(公告)日：2024-12-03

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

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：US12147125B2

公开(公告)日：2024-11-19

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

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：US11988910B1

公开(公告)日：2024-05-21

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：US11947749B2

公开(公告)日：2024-04-02

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: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/1335

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/0416 ,  G06F3/0445 ,  G06F3/0446 ,  G02F1/133553

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：US11914236B2

公开(公告)日：2024-02-27

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 ,  G02F1/13357

CPC classification number: G02F1/1323 ,  G02F1/13306 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/134309 ,  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：US11899305B2

公开(公告)日：2024-02-13

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

CPC classification number: G02F1/133531 ,  G02F1/133514 ,  G02F1/133638 ,  G02F1/134363 ,  G02F1/134372

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：US11860468B2

公开(公告)日：2024-01-02

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: G02F1/13 ,  G02F1/1335 ,  G02F1/1333 ,  G02F1/1343 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1362 ,  G02F1/133

CPC classification number: G02F1/133519 ,  G02F1/13338 ,  G02F1/133553 ,  G02F1/134309 ,  G02F1/136286 ,  G06F3/0412 ,  G06F3/0446 ,  G02F1/13306 ,  G02F2201/52

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.