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公开(公告)号：US11852911B2
公开(公告)日：2023-12-26
申请号：US17852411
申请日：2022-06-29
发明人： Koji Murata , Yasuhiro Haseba , Kazutaka Hanaoka , Kimiaki Nakamura , Mariko Honda , Atsuko Kanashima , Tadashi Hasegawa , Shinji Shimada
IPC分类号： G02F1/1334 , G02F1/137 , G02F1/1337 , G02F1/13357
CPC分类号： G02F1/1334 , G02F1/1337 , G02F1/13706 , G02F1/133603
摘要： 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.
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公开(公告)号：US12117679B2
公开(公告)日：2024-10-15
申请号：US18097171
申请日：2023-01-13
发明人： Koji Murata , Hiroshi Tsuchiya , Shinpei Higashida , Takahiro Sasaki , Takashi Satoh , Shinji Shimada
IPC分类号： G02F1/13 , F21V8/00 , G02F1/1335 , G02F1/1343 , G02F1/1362 , G02F1/137
CPC分类号： G02F1/1323 , G02B6/0038 , G02F1/133512 , G02F1/133514 , G02F1/134336 , G02F1/134345 , G02F1/13439 , G02F1/136286 , G02F1/137 , G02B2207/123
摘要： 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.
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公开(公告)号：US12066716B2
公开(公告)日：2024-08-20
申请号：US18126820
申请日：2023-03-27
发明人： Naru Usukura , Akiko Itoh , Koji Murata , Keisuke Yoshida
IPC分类号： G02F1/13357 , G02F1/1335 , G02F1/1347 , G06F1/16
CPC分类号： G02F1/13362 , G02F1/133528 , G02F1/1347 , G06F1/1616
摘要： 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.
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公开(公告)号：US11988910B1
公开(公告)日：2024-05-21
申请号：US18379427
申请日：2023-10-12
发明人： Koji Murata , Junichi Masuda , Shugo Yagi , Akira Hirai , Hiroshi Tsuchiya , Takashi Satoh , Akira Sakai , Kiyoshi Minoura
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/1347
CPC分类号： G02F1/1323 , G02F1/133528 , G02F1/1347
摘要： 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.
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公开(公告)号：US11914236B2
公开(公告)日：2024-02-27
申请号：US18092858
申请日：2023-01-03
发明人： Koji Murata , Hiroshi Tsuchiya , Shinpei Higashida , Takahiro Sasaki , Takashi Satoh , Shinji Shimada
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/1343 , G02F1/133 , G02F1/13357
CPC分类号： G02F1/1323 , G02F1/13306 , G02F1/133512 , G02F1/133514 , G02F1/134309 , G02F1/1336
摘要： 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.
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公开(公告)号：US11899305B2
公开(公告)日：2024-02-13
申请号：US17965816
申请日：2022-10-14
发明人： Koji Murata , Junichi Masuda , Shugo Yagi , Hiroshi Tsuchiya , Takashi Satoh , Shinji Shimada
IPC分类号： G02F1/1335 , G02F1/13363 , G02F1/1343
CPC分类号： G02F1/133531 , G02F1/133514 , G02F1/133638 , G02F1/134363 , G02F1/134372
摘要： 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°.
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公开(公告)号：US11698556B2
公开(公告)日：2023-07-11
申请号：US17715085
申请日：2022-04-07
发明人： Koji Murata , Kosuke Nagata , Kazutoshi Kida , Kazutaka Hanaoka , Shinji Shimada , Yasuhiro Haseba
IPC分类号： G02F1/1343 , G02F1/1362 , G02F1/13 , G02F1/1333 , G06F3/041 , G06F3/044
CPC分类号： G02F1/134372 , G02F1/1323 , G02F1/13338 , G02F1/133345 , G02F1/134336 , G02F1/134345 , G02F1/136286 , G06F3/0412 , G06F3/0446
摘要： The liquid crystal display device includes a liquid crystal panel, the liquid crystal panel including sub-pixels and including an active matrix substrate and a counter substrate, the active matrix substrate including a gate line, a first electrode, and a second electrode, the counter substrate including a third electrode, each of the sub-pixels being provided with an optical opening, the third electrode including a linear electrode extending along the gate line, a distance between the linear electrode and the optical opening being less than D/4 and a width of the linear electrode being D/4 or less, wherein a distance between two optical openings adjacent in the direction perpendicular to the extending direction of the gate line is defined as D.
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公开(公告)号：US12078878B1
公开(公告)日：2024-09-03
申请号：US18416697
申请日：2024-01-18
发明人： Koji Murata , Akira Hirai , Takashi Satoh , Akira Sakai , Kiyoshi Minoura
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/13363 , G02F1/1343
CPC分类号： G02F1/1323 , G02F1/133512 , G02F1/133514 , G02F1/133528 , G02F1/133638 , G02F1/134381
摘要： 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
发明人： Koji Murata , Akira Hirai , Takashi Satoh , Akira Sakai , Kiyoshi Minoura
IPC分类号： G02F1/13 , G02F1/1335 , G02F1/13363 , G02F1/1343
CPC分类号： G02F1/1323 , G02F1/133512 , G02F1/133514 , G02F1/133528 , G02F1/133638 , G02F1/134381
摘要： 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：US12007640B2
公开(公告)日：2024-06-11
申请号：US18383548
申请日：2023-10-25
发明人： Koji Murata , Yasuhiro Haseba , Kazutaka Hanaoka , Kimiaki Nakamura , Mariko Honda , Atsuko Kanashima , Tadashi Hasegawa , Shinji Shimada
IPC分类号： G02F1/1334 , G02F1/13357 , G02F1/1337 , G02F1/137
CPC分类号： G02F1/1334 , G02F1/133603 , G02F1/1337 , G02F1/13706
摘要： 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.
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