公开(公告)号：US20190121208A1

公开(公告)日：2019-04-25

申请号：US16090255

申请日：2017-03-23

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSUKE IWATA ,  MITSUHIRO MURATA ,  TAKUMA TOMOTOSHI ,  SATOSHI MATSUMURA

IPC: G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/137 ,  G02F1/1337

Abstract: A liquid crystal display device includes an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates. The lower substrate includes a pixel electrode, a first auxiliary capacitance electrode, and a second auxiliary capacitance electrode for one pixel, and one or two auxiliary capacitance lines for one pixel line including pixels. The two auxiliary capacitive electrodes are electrically connected to different auxiliary capacitance lines. Each of the first auxiliary capacitance electrode and the second auxiliary capacitance electrode and the pixel electrode overlap each other in a plan view. The first auxiliary capacitance electrode and the second auxiliary capacitance electrode differ from each other in shape in a display region of each of the pixels. The shape of the first auxiliary capacitance electrode in a first pixel is identical to the shape of the second auxiliary capacitance electrode in a second pixel adjacent to the first pixel.

公开(公告)号：US20190212615A1

公开(公告)日：2019-07-11

申请号：US16316141

申请日：2017-07-05

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAKUMA TOMOTOSHI ,  MITSUHIRO MURATA ,  YOSUKE IWATA ,  SATOSHI MATSUMURA

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1368

Abstract: The present invention provides a liquid crystal display device capable of achieving a high contrast ratio, a wide viewing angle, and a high-speed response. The liquid crystal display device includes an upper substrate; a lower substrate; and a liquid crystal layer sandwiched between the upper substrate and the lower substrate. The lower substrate includes a first electrode, and a second electrode and a third electrode arranged in a layer different from the first electrode. The first electrode includes a trunk portion and multiple branch portions branching from the trunk portion and is provided with an opening between the branch portions. The second electrode and the third electrode constitute a pair of comb-shaped electrodes and each include a trunk portion and multiple branch portions branching from the trunk portion. The branch portions of the first electrode are each bent at a predetermined angle. The electrodes each have a predetermined configuration.

公开(公告)号：US20190107759A1

公开(公告)日：2019-04-11

申请号：US15762964

申请日：2016-09-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MITSUHIRO MURATA ,  YOSUKE IWATA ,  TAKUMA TOMOTOSHI ,  SATOSHI MATSUMURA

IPC: G02F1/1343 ,  G09G3/36

Abstract: A liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate; wherein the first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode, the second electrode has an opening having a shape including an elliptical portion and/or a circular portion, in a no-voltage-applied state, where no voltage is applied between the first electrode and the second electrode, the liquid crystal molecules are aligned parallel to the first substrate, and in a plan view, the major axis of the elliptical portion is parallel or perpendicular to the alignment azimuth of the liquid crystal molecules in the no-voltage-applied state.

公开(公告)号：US20180188613A1

公开(公告)日：2018-07-05

申请号：US15741247

申请日：2016-06-27

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSUKE IWATA ,  MITSUHIRO MURATA ,  SATOSHI MATSUMURA

IPC: G02F1/1343 ,  G02F1/133 ,  G02F1/1368

CPC classification number: G02F1/134309 ,  G02F1/13306 ,  G02F1/134363 ,  G02F1/1368 ,  G02F2001/134318 ,  G02F2201/124 ,  G02F2201/40 ,  G02F2202/10

Abstract: In the present invention, a liquid crystal display device capable of achieving a high contrast ratio and a wide viewing angle, and capable of achieving a high-speed response is provided. The liquid crystal display device in the present invention is configured such that, when viewed in a plan view, at least one contour line of a plurality of linear portions of a first electrode intersects with a branch portion of a second electrode and a branch portion of a third electrode adjacent to each other, a length of a part intersecting with the branch portion of the third electrode is longer than a length of a part intersecting with the branch portion of the second electrode, and a driving operation is performed such that a potential difference between the first electrode and the third electrode is equal to or greater than a potential difference between the first electrode and the second electrode.

公开(公告)号：US20180046039A1

公开(公告)日：2018-02-15

申请号：US15557711

申请日：2016-03-04

Applicant: SHARP KABUSHIKI KAISHA

Inventor： SATOSHI MATSUMURA ,  YOSUKE IWATA ,  MITSUHIRO MURATA

IPC: G02F1/1343 ,  G02F1/1368 ,  G02F1/137

CPC classification number: G02F1/134309 ,  G02F1/134363 ,  G02F1/1368 ,  G02F1/137 ,  G02F2001/134345 ,  G02F2001/13706 ,  G02F2201/122 ,  G02F2201/124 ,  G02F2202/10

Abstract: The liquid crystal display device of the present invention includes: upper and lower substrates; and a horizontal alignment type liquid crystal layer, the lower substrate including electrodes, the electrodes including a first electrode, a second electrode present in a different layer from the first electrode, and a third electrode present in a different layer from the first electrode, the first electrode including a plurality of linear sections, the second electrode and the third electrode constituting a pair of comb electrodes, each of the comb electrodes including a trunk part and a plurality of branch parts diverging from the trunk part, at least one of the plurality of branch parts of the third electrode including a protruding part that makes the branch part partially wide, between two intersections with a plurality of linear sections of the first electrode in a plan view of the lower substrate.

公开(公告)号：US20170343869A1

公开(公告)日：2017-11-30

申请号：US15532734

申请日：2015-11-27

Applicant: Sharp Kabushiki Kaisha

Inventor： SATOSHI MATSUMURA ,  MITSUHIRO MURATA ,  YOSUKE IWATA

IPC: G02F1/1343 ,  G02F1/133 ,  G02F1/137 ,  G02F1/1337 ,  G02F1/1368

CPC classification number: G02F1/134363 ,  G02F1/133707 ,  G02F2001/133531 ,  G02F2001/133738 ,  G02F2001/134372 ,  G02F2001/13706 ,  G02F2201/124 ,  G02F2201/128 ,  G02F2202/10

Abstract: The present invention provides a liquid crystal display device that may realize a wide viewing angle and realize a high-speed response. The liquid crystal display device of the present invention is a liquid crystal display device that has upper and lower substrates and a liquid crystal layer which is interposed between the upper and lower substrates, in which the lower substrate includes electrodes, the electrodes are configured with a first electrode, a second electrode in a different layer from the first electrode, and a third electrode in a same layer as the second electrode, the liquid crystal layer includes liquid crystal molecules that are horizontally aligned with respect to a main surface of the upper and lower substrates in a case where a voltage is not applied, and the liquid crystal display device is configured to execute a driving operation that causes the electrodes to generate an electric field which causes a portion of the liquid crystal molecules to rotate in a horizontal plane with respect to the main surface and causes another portion of the liquid crystal molecules to rotate in an opposite direction to the portion of the liquid crystal molecules in the horizontal plane with respect to the main surface.

公开(公告)号：US20190310525A1

公开(公告)日：2019-10-10

申请号：US16315116

申请日：2017-07-03

Applicant: SHARP KABUSHIKI KAISHA

Inventor： SATOSHI MATSUMURA ,  MITSUHIRO MURATA ,  TAKUMA TOMOTOSHI ,  YOSUKE IWATA

IPC: G02F1/1343 ,  G02F1/137 ,  G02F1/1368

Abstract: A liquid crystal display device including an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates, wherein the lower substrate includes a first electrode and a second electrode and a third electrode arranged in a layer different from the first electrode, the first electrode has multiple linear portions and an opening is provided between the linear portions, the second electrode and the third electrode are a pair of comb-shaped electrodes, each of the comb-shaped electrodes has a trunk portion and multiple branch portions branching from the trunk portion, at least one of the branch portions of the third electrode has a narrow portion which is narrowest and a projection portion which is wider than the narrow portion, one of angles on the upper side and on the opening side formed by a contour line of the opening on each of the left and right sides of the projection portion and the narrow portion of the branch portion of the third electrode in the opening is an obtuse angle or a right angle and the other is an acute angle or a right angle, and a length of the narrow portion on each side of the projection portion in the opening of the first electrode is specified.

公开(公告)号：US20180239211A1

公开(公告)日：2018-08-23

申请号：US15751245

申请日：2016-08-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TOMOKO TERANISHI ,  HIROYUKI MORIWAKI ,  EIJI SATOH ,  TADASHI OHTAKE ,  HIDEFUMI YOSHIDA ,  SATOSHI MATSUMURA

IPC: G02F1/167 ,  G02F1/17

CPC classification number: G02F1/167 ,  G02F1/1336 ,  G02F1/134363 ,  G02F1/17 ,  G02F1/172 ,  G02F2201/124 ,  G09G3/344 ,  G09G3/3446

Abstract: The optical device (100) includes a first substrate (10), a second substrate (20), and an optical layer (30). The first substrate includes a first electrode (11) and a second electrode (12) configured to be provided with mutually different electrical potentials within a pixel. The optical layer may include a medium (31) and a plurality of shape-anisotropic particles (32) dispersed in the medium. At least one of the first electrode and the second electrode may include a plurality of comb teeth portions (11a, 12a) arranged at predetermined intervals along the first direction (D1). When an electric potential difference is applied between the first electrode and the second electrode, the pixel may be configured to have an electrical field distribution in which a strong electric field region having a stronger field intensity than another region is periodically formed parallel to the surface of the optical layer along a second direction (D2) orthogonal to the first direction.

公开(公告)号：US20170322470A1

公开(公告)日：2017-11-09

申请号：US15527718

申请日：2015-11-12

Applicant: Sharp Kabushiki Kaisha

Inventor： YOSUKE IWATA ,  MITSUHIRO MURATA ,  SATOSHI MATSUMURA

IPC: G02F1/1343 ,  G02F1/133 ,  G02F1/1368

CPC classification number: G02F1/134363 ,  G02F1/13306 ,  G02F1/13439 ,  G02F1/1368 ,  G02F2001/134345 ,  G02F2001/134372

Abstract: The present invention provides a liquid crystal display device that can achieve a wide viewing angle and rapid response. The liquid crystal display device includes: an upper substrate and a lower substrate; and a liquid crystal layer disposed between the upper and lower substrates, the lower substrate including electrodes consisting of a first electrode disposed on the liquid crystal layer side, a second electrode disposed at a position farther from the liquid crystal layer than the first electrode, and a third electrode disposed at a position farther from the liquid crystal layer than the second electrode, the liquid crystal layer containing liquid crystal molecules that are aligned in parallel with the main surfaces of the upper and lower substrates with no voltage applied, the liquid crystal display device being configured to perform a first drive operation utilizing an electric field generated by any of the electrodes, the electric field rotating a first group of the liquid crystal molecules in a plane parallel to the main surfaces and rotating a second group of the liquid crystal molecules in a direction opposite to the rotation direction of the first group of the liquid crystal molecules in the plane parallel to the main surfaces.