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：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：US11988918B1

公开(公告)日：2024-05-21

申请号：US18382267

申请日：2023-10-20

Applicant: Sharp Display Technology Corporation

Inventor： Yuichi Kawahira ,  Masahiro Hasegawa ,  Ryosuke Saigusa ,  Jianeng Xu ,  Akira Sakai

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133531 ,  G02F1/133605 ,  G02F1/133607 ,  G02F2202/40

Abstract: Provided is an optical element including a phase difference layer. The phase difference layer is a laminate of n first phase difference layers and m second phase difference layers. The n first phase difference layers each contain first anisotropic molecules with tilt angles different between a viewing surface side and a back surface side. The m second phase difference layers each contain second anisotropic molecules with tilt angles different between a viewing surface side and a back surface side. Slow axes of the n first phase difference layers are in a same orientation. Slow axes of the m second phase difference layers are in a same orientation. The slow axes of the n first phase difference layers and the slow axes of the m second phase difference layers are anti-parallel to each other and are parallel to or perpendicular to the transmission axis of the first polarizer.

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：US11927850B2

公开(公告)日：2024-03-12

申请号：US18195917

申请日：2023-05-10

Applicant: Sharp Display Technology Corporation

Inventor： Yuichi Kawahira ,  Masahiro Hasegawa ,  Ryosuke Saigusa ,  Akira Sakai

IPC: G02F1/13363 ,  G02B27/01 ,  G02F1/1335 ,  G06F1/16

CPC classification number: G02F1/133634 ,  G02B27/0172 ,  G02F1/133531 ,  G02F1/133536 ,  G02F1/133567 ,  G06F1/163 ,  G02F2413/01 ,  G02F2413/02 ,  G02F2413/06 ,  G02F2413/08 ,  G02F2413/12

Abstract: Provided is a liquid crystal display device having high luminance and high CR in a front direction and especially useful as a head-mounted liquid crystal display device, for example. The liquid crystal display device includes: a liquid crystal panel; an optical element; and a backlight, arranged in this order from a viewing surface side. The optical element includes a first polarizer, a retardation layer, and a second polarizer. The first polarizer, the retardation layer, and the second polarizer are arranged in this order from the viewing surface side. The first polarizer and the second polarizer are reflection polarizers. A reflection axis of the first polarizer and a reflection axis of the second polarizer are parallel to each other. In oblique directions at azimuths of 0°, 45°, and 90° at a polar angle of 60°, a polarization state of light incident on the first polarizer is elliptical polarization.

公开(公告)号：US12174482B2

公开(公告)日：2024-12-24

申请号：US18239318

申请日：2023-08-29

Applicant: Sharp Display Technology Corporation

Inventor： Ryosuke Saigusa ,  Akira Sakai ,  Yuichi Kawahira ,  Masahiro Hasegawa

IPC: G02F1/1335 ,  G02F1/13 ,  G02F1/1333

Abstract: Provided is a display device in which warping of a display panel is sufficiently reduced or prevented. The display device includes: a display panel; and a polarizer, the polarizer being provided with at least one notch that extends inward from an outer edge of the polarizer.

公开(公告)号：US11774813B2

公开(公告)日：2023-10-03

申请号：US18078404

申请日：2022-12-09

Applicant: Sharp Display Technology Corporation

Inventor： Yuichi Kawahira ,  Akira Hirai ,  Akira Sakai

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1333 ,  G02F1/135 ,  G03F7/039

CPC classification number: G02F1/1351 ,  G02F1/1368 ,  G02F1/133345 ,  G02F1/133519 ,  G02F1/133553 ,  G03F7/039 ,  G02F1/136286

Abstract: Provided are a liquid crystal display device that can increase light use efficiency and reduce external light reflection, and a method of producing the liquid crystal display device. The liquid crystal display device sequentially includes, from a back surface side toward a viewing surface side: a first substrate; a liquid crystal layer; and a second substrate, the liquid crystal display device including sub-pixels each including an optical opening allowing light to pass through, the first substrate sequentially including, from the back surface side toward the viewing surface side: a supporting substrate; a metal layer surrounding the optical openings; and a resist layer being superimposed with the metal layer and being in contact with the metal layer, an end of the resist layer being superimposed with an end of the metal layer and having a taper angle θ of 40° or more.

公开(公告)号：US12117697B2

公开(公告)日：2024-10-15

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 ,  G02F1/133742 ,  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：US12078878B1

公开(公告)日：2024-09-03

申请号：US18416697

申请日：2024-01-18

Applicant: Sharp Display Technology Corporation

Inventor： Koji Murata ,  Akira Hirai ,  Takashi Satoh ,  Akira Sakai ,  Kiyoshi Minoura

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1343

CPC classification number: G02F1/1323 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/133638 ,  G02F1/134381

Abstract: A viewing angle control liquid crystal panel includes: a first polarizer having a first absorption axis; a first liquid crystal panel including a first substrate, a first liquid crystal layer, and a second substrate; a second liquid crystal panel including a third substrate, a second liquid crystal layer, and a fourth substrate; and a third liquid crystal panel including a fifth substrate, a third liquid crystal layer, and a sixth substrate. The following equations are satisfied, where φP1 is an azimuth angle of the first absorption axis and φ1, φ2, φ3, φ4, φ5, and φ6 are azimuth angles of directors of liquid crystal molecules on first, second, third, fourth, fifth, and sixth substrate sides:

0°≤|φ1−φ2|≤5°

0°≤|φP1−φ1|≤5°

0°≤|φ3−φ4|≤5°

0°≤|φ5−φ6|≤5°.

公开(公告)号：US20240272463A1

公开(公告)日：2024-08-15

申请号：US18416697

申请日：2024-01-18

Applicant: Sharp Display Technology Corporation

Inventor： Koji Murata ,  Akira Hirai ,  Takashi Satoh ,  Akira Sakai ,  Kiyoshi Minoura

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1343

CPC classification number: G02F1/1323 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/133638 ,  G02F1/134381

Abstract: A viewing angle control liquid crystal panel includes: a first polarizer having a first absorption axis; a first liquid crystal panel including a first substrate, a first liquid crystal layer, and a second substrate; a second liquid crystal panel including a third substrate, a second liquid crystal layer, and a fourth substrate; and a third liquid crystal panel including a fifth substrate, a third liquid crystal layer, and a sixth substrate. The following equations are satisfied, where φP1 is an azimuth angle of the first absorption axis and φ1, φ2, φ3, φ4, φ5, and φ6 are azimuth angles of directors of liquid crystal molecules on first, second, third, fourth, fifth, and sixth substrate sides:


0°≤|φ1−φ2|≤5°



0°≤|φP1−φ1|≤5°



0°≤|φ3−φ4|≤5°



0°≤|φ5−φ6|≤5°.