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：US20230314877A1

公开(公告)日：2023-10-05

申请号：US18126820

申请日：2023-03-27

Applicant: Sharp Display Technology Corporation

Inventor： Naru USUKURA ,  Akiko ITOH ,  Koji MURATA ,  Keisuke YOSHIDA

IPC: G02F1/13357 ,  G06F1/16

CPC classification number: G02F1/13362 ,  G06F1/1616

Abstract: An electronic device includes a first display panel including a first display surface, and a second display panel including a second display surface and configured to be disposed such that light emitted from the first display surface is incident on the second display surface. The first display panel is configured such that light emitted from the first display surface and incident on the second display surface includes a large amount of P-polarization components. The second display panel is a reflection-type display panel, and includes a polarizer disposed on the second display surface and configured to absorb S-polarization components of incident light.

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：US20240257775A1

公开(公告)日：2024-08-01

申请号：US18397948

申请日：2023-12-27

Applicant: Sharp Display Technology Corporation

Inventor： Junichi MASUDA ,  Koji MURATA

IPC: G09G3/36 ,  G02F1/133 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139 ,  G06F3/01 ,  G09G3/34

CPC classification number: G09G3/36 ,  G02F1/13306 ,  G02F1/133531 ,  G02F1/133634 ,  G02F1/1393 ,  G06F3/013 ,  G09G3/3406 ,  G02F2413/01 ,  G02F2413/14 ,  G09G2320/028 ,  G09G2354/00

Abstract: A liquid crystal panel includes a first substrate, a second substrate disposed to face the first substrate, a liquid crystal layer that is located between the first substrate and the second substrate and contains liquid crystal molecules, a pair of electrodes that apply a voltage to the liquid crystal layer, and a voltage control unit that performs control to alternately apply a first voltage having a first absolute value and a second voltage having a second absolute value different from the first absolute value between the pair of 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.

公开(公告)号：US20230205010A1

公开(公告)日：2023-06-29

申请号：US18089303

申请日：2022-12-27

Applicant: Sharp Display Technology Corporation

Inventor： Tomonori YOSHIDA ,  Yasuhiro HASEBA ,  Kimiaki NAKAMURA ,  Koji MURATA

IPC: G02F1/13357 ,  G02F1/1334

CPC classification number: G02F1/133615 ,  G02F1/13345 ,  G02F2201/34

Abstract: Provided is a liquid crystal display element capable of switching between a transparent state and a scattering state and of reducing or preventing a decrease in luminance in the scattering state. The liquid crystal display element includes a liquid crystal panel containing a polymer-dispersed liquid crystal containing a polymer network and a liquid crystal component, and a light source module including a light source adjacent to the liquid crystal panel and a mirror configured to reflect light emitted from the light source toward the liquid crystal panel.

公开(公告)号：US20240094577A1

公开(公告)日：2024-03-21

申请号：US18383548

申请日：2023-10-25

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Yasuhiro HASEBA ,  Kazutaka HANAOKA ,  Kimiaki NAKAMURA ,  Mariko HONDA ,  Atsuko KANASHIMA ,  Tadashi HASEGAWA ,  Shinji SHIMADA

IPC: G02F1/1334 ,  G02F1/13357 ,  G02F1/1337 ,  G02F1/137

CPC classification number: G02F1/1334 ,  G02F1/133603 ,  G02F1/1337 ,  G02F1/13706

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

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：US20240377683A1

公开(公告)日：2024-11-14

申请号：US18691293

申请日：2021-11-16

Applicant: Sharp Display Technology Corporation

Inventor： Kimiaki NAKAMURA ,  Masakazu SHIBASAKI ,  Yasuhiro HASEBA ,  Koji MURATA

IPC: G02F1/1343 ,  G02F1/133 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/1339

Abstract: A display device includes: a plurality of first colored particles contained in a space between a first substrate and a second substrate; a light-emitting portion having a first light-emitting element provided on the first substrate, and a first-light-emitting-element driving circuit provided on the first substrate and configured to drive the first light-emitting element; a first transparent portion disposed in a direction along a main surface of the first substrate with respect to the light-emitting portion; a first electrode provided in the light-emitting portion; and a second electrode provided in the first transparent portion and being nckudestransparent. The display device is capable of switching between a light-transmitting state of the first transparent portion in which the first electrode attracts the plurality of first colored particles, and a light-blocking state of the first transparent portion in which the second electrode attracts the plurality of first colored particles.