公开(公告)号：US10948778B2

公开(公告)日：2021-03-16

申请号：US16321330

申请日：2017-07-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masahiro Hasegawa ,  Koji Murata ,  Yuichi Kawahira ,  Takako Koide ,  Kozo Nakamura ,  Akira Sakai ,  Kiyoshi Minoura

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1339 ,  G02F1/1343

Abstract: A liquid crystal display panel of the present invention includes, sequentially from the viewer side: a first linearly polarizing plate; a first λ/4-wavelength layer; a first substrate including a color filter, a black matrix, and a second λ/4-wavelength layer; a liquid crystal layer; a second substrate; and a second linearly polarizing plate, the liquid crystal display panel further including a sealing material disposed so as to surround the liquid crystal layer in a plan view, wherein the second λ/4-wavelength layer is disposed closer to the liquid crystal layer than the color filter and the black matrix are and such that an outer edge of the second λ/4-wavelength layer lies inside an arrangement region of the sealing material, and the first λ/4-wavelength layer and the second λ/4-wavelength layer are disposed such that their slow axes are perpendicular to each other.

公开(公告)号：US10884287B2

公开(公告)日：2021-01-05

申请号：US16303640

申请日：2017-05-16

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Takuya Ootani ,  Kiyoshi Minoura ,  Takashi Satoh

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/1362 ,  G02F1/13363

Abstract: A reflective liquid crystal display device has a first substrate having a first electrode that reflects light; a second substrate having a second electrode that transmits light; a liquid crystal layer provided between the first electrode and the second electrode, including a nematic liquid crystal material having negative dielectric anisotropy Δε and a chiral agent, having nearly vertical alignment when no voltage is applied, and having twist alignment or hybrid alignment when white voltage is applied; and a polarizing layer provided on the observer side of the second substrate and at least one retarder layer disposed between the polarizing layer and the second substrate, wherein the reflective liquid crystal display device has a drive circuit that applies black voltage or white voltage across the liquid crystal layer at a frame rate of 1 fps or less, and when applying white voltage across the liquid crystal layer over a plurality of frames, the drive circuit applies the white display voltage whose polarity is inverted for each frame with respect to the potential of the second electrode, and assuming that a natural pitch of the nematic liquid crystal material including the chiral agent is p, that a thickness of the liquid crystal layer is d, and that a birefringence of the nematic liquid crystal material is Δn, 60°

公开(公告)号：US10802344B2

公开(公告)日：2020-10-13

申请号：US16334914

申请日：2017-09-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masanobu Mizusaki ,  Kiyoshi Minoura ,  Akira Sakai

IPC: G02F1/13363 ,  G02F1/1337 ,  G02F1/137 ,  G02F1/1335

Abstract: Provided is a liquid crystal display device including a first substrate; a second substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate and containing a negative liquid crystal material; a first alignment film provided on the surface of the first substrate on the liquid crystal layer side; a first phase difference layer having birefringence provided between the first substrate and the first alignment film; and a second alignment film disposed on the surface of the second substrate on the liquid crystal layer side, wherein at least one of the first alignment film and the second alignment film is a photo-alignment film being in contact with the liquid crystal layer and imparting a pretilt angle of 75° or more and less than 90° to the liquid crystal material; the first phase difference layer is formed of a first polymer material having a first photofunctional group; the photo-alignment film is formed of a second polymer material having a second photofunctional group; and the first photofunctional group and the second photofunctional group are each a group causing at least one reaction selected from the group consisting of isomerization reaction, dimerization reaction, Fries rearrangement reaction, and cleavage reaction.

公开(公告)号：US10782556B2

公开(公告)日：2020-09-22

申请号：US16778108

申请日：2020-01-31

Applicant: Sharp Kabushiki Kaisha

Inventor： Nathan James Smith ,  Kiyoshi Minoura ,  Akira Sakai ,  Yuichi Kawahira

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/1337 ,  H01L27/12 ,  G02F1/13357 ,  G02F1/135

Abstract: A display device in which ambient light reflections, for example, from IPS or FFS type displays are reduced by a circular polariser (e.g., linear polariser combined with external quarter waveplate) to make the light circular polarized, as it traverses the multiple reflective layers between the polariser and LC layer, and then an internal quarter waveplate converts the light back to linear polarisation before it enters the LC, so the display can operate as normal, while the circular polariser absorbs unwanted reflections of ambient light from within the display.

公开(公告)号：US10720701B2

公开(公告)日：2020-07-21

申请号：US15765848

申请日：2016-10-06

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Fumiki Nakano ,  Kiyoshi Minoura ,  Shigeyasu Mori ,  Makoto Nakazawa ,  Takatoshi Orui

IPC: H01L27/12 ,  H01Q9/04 ,  H01Q3/26 ,  H01Q3/44 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/24 ,  H01Q25/00 ,  G02F1/1368 ,  G02F1/1362 ,  H01L29/786 ,  H01Q19/10 ,  H01Q21/20

Abstract: A scanning antenna is a scanning antenna in which antenna units U are arranged, and includes a TFT substrate including a first dielectric substrate, TFTs, a plurality of gate bus lines, source bus lines, and patch electrodes; a slot substrate including a second dielectric substrate, and a slot electrode formed on a first main surface of the second dielectric substrate; a liquid crystal layer LC provided between the TFT substrate and the slot substrate; and a reflective conductive plate provided opposing a second main surface of the second dielectric substrate opposite to the first main surface via a dielectric layer. The slot electrode includes slots arranged in correspondence with the plurality of patch electrodes, and each of the patch electrodes is connected to a drain of a corresponding TFT and is supplied with a data signal from a corresponding source bus line while selected by a scanning signal supplied from the gate bus line of the corresponding TFT. The frequency at which the polarity of the voltage applied to each of the plurality of patch electrodes is inverted is greater than or equal to 300 Hz.

公开(公告)号：US20190278139A1

公开(公告)日：2019-09-12

申请号：US15918104

申请日：2018-03-12

Applicant: Sharp Kabushiki Kaisha

Inventor： Nathan James Smith ,  Andrew Acreman ,  Akira Sakai ,  Kiyoshi Minoura ,  Koji Murata ,  Yuichi Kawahira ,  Jiyun Yu

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1368 ,  G02F1/1341 ,  G02F1/1339 ,  C09K19/56

Abstract: A method of fabricating a liquid crystal device (LCD) minimizes changes to optical properties of an internal RM retarder. In exemplary embodiments, the fabricating method comprises depositing a plurality of layers in an optical stack, the plurality of layers including from a viewing side: a first linear polariser; an external retarder; a colour filter substrate; a colour filter layer; an internal reactive mesogen (RM) retarder alignment layer; an internal reactive mesogen (RM) retarder; a liquid crystal (LC) layer; a thin film transistor (TFT) substrate; and a second linear polarizer. Any layer that is deposited after the internal RM retarder on a non-viewing side relative to the color filter substrate, and in direct contact with the internal RM retarder, has a solvent concentration at deposition of less than 15% of a solvent that can alter optical properties of the internal RM retarder (e.g., less than 15% NMP).

公开(公告)号：US10136638B2

公开(公告)日：2018-11-27

申请号：US15592922

申请日：2017-05-11

Applicant: Sharp Kabushiki Kaisha

Inventor： Miho Yamada ,  Kiyoshi Minoura ,  Takahiro Nakahara ,  Seiji Takami

IPC: A01N25/34 ,  A01N37/02 ,  A61L9/00 ,  A01N37/06 ,  B08B1/00 ,  B08B3/08 ,  B08B11/00 ,  A01N47/10 ,  A01N61/00 ,  A61L2/232

Abstract: A synthetic polymer film (34A), (34B) having a surface which has a plurality of first raised portions (34Ap), (34Bp), wherein a two-dimensional size of the plurality of first raised portions (34Ap), (34Bp) is in a range of more than 20 nm and less than 500 nm when viewed in a normal direction of the synthetic polymer film (34A), (34B); and the surface has a microbicidal effect.

公开(公告)号：US10094952B2

公开(公告)日：2018-10-09

申请号：US14429395

申请日：2013-09-13

Applicant: Sharp Kabushiki Kaisha

Inventor： Chiaki Minari ,  Kiyoshi Minoura

IPC: G02B1/11 ,  B29D11/00 ,  G02B1/118 ,  B32B27/00 ,  G02F1/1335 ,  B29K105/00 ,  B29K105/24

Abstract: An example embodiment of the present invention provides an anti-reflection film capable of providing low reflectability and designability, a method of producing the film, and a display device. Another example embodiment of the present invention relates to an anti-reflection film including a substrate and a resin layer on the substrate, the resin layer containing a plurality of cavities, the resin layer and the substrate having different refractive indexes from each other, the resin coat including a base portion and a plurality of protrusions on the base portion, the plurality of protrusions being integrally formed with the base portion, the base portion having a thickness that varies at least in one direction in a region.

公开(公告)号：US09971193B2

公开(公告)日：2018-05-15

申请号：US15508510

申请日：2015-09-02

Applicant: Sharp Kabushiki Kaisha

Inventor： Kohzoh Nakamura ,  Akira Sakai ,  Kiyoshi Minoura

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/133528 ,  G02F1/134363 ,  G02F1/137 ,  G02F1/1393 ,  G02F1/1396 ,  G02F2001/133773 ,  G02F2001/134372 ,  G02F2001/13712

Abstract: A liquid crystal display panel (100A, 100B) includes a transverse electric field mode liquid crystal cell (10), a first polarizing plate (22A, 22B) disposed on a back surface side of the liquid crystal cell (10), and a second polarizing plate (24A, 24B) disposed on a viewer's side of the liquid crystal cell (10). A liquid crystal layer (18) contains a nematic liquid crystal whose dielectric anisotropy is negative. The liquid crystal layer (18) has Δnd of less than 550 nm, where Δn is the birefringent index of the nematic liquid crystal and d is the thickness of the liquid crystal layer. The liquid crystal layer (18) is in a twist alignment state when no voltage is applied. When polarized light whose Stokes parameter S3 takes on an absolute value |S3| of 1.00 enters the liquid crystal layer (18), |S3| of polarized light having perpendicularly passed through the liquid crystal layer (18) is 0.85 or greater. The first polarizing plate (22A, 22B) and the second polarizing plate (24A, 24B) are circularly polarizing plates or elliptically polarizing plates whose ellipticity is 0.422 or greater.

公开(公告)号：US09781926B2

公开(公告)日：2017-10-10

申请号：US15437044

申请日：2017-02-20

Applicant: Sharp Kabushiki Kaisha

Inventor： Miho Yamada ,  Kiyoshi Minoura ,  Takahiro Nakahara ,  Seiji Takami

IPC: A01N25/34 ,  A01N37/02 ,  A61L9/00 ,  A01N37/06 ,  B08B1/00 ,  B08B3/08 ,  B08B11/00

CPC classification number: A01N25/34 ,  A01N37/02 ,  A01N37/06 ,  A01N47/10 ,  A01N61/00 ,  A61L2/232 ,  A61L9/00 ,  B08B1/006 ,  B08B3/08 ,  B08B11/00

Abstract: A synthetic polymer film (34A), (34B) having a surface which has a plurality of first raised portions (34Ap), (34Bp), wherein a two-dimensional size of the plurality of first raised portions (34Ap), (34Bp) is in a range of more than 20 nm and less than 500 nm when viewed in a normal direction of the synthetic polymer film (34A), (34B); and the surface has a microbicidal effect.