公开(公告)号：US12181699B2

公开(公告)日：2024-12-31

申请号：US17889436

申请日：2022-08-17

Applicant: Sharp Kabushiki Kaisha

Inventor： Akira Sakai ,  Masahiro Hasegawa ,  Miho Yamada ,  Kiyoshi Minoura

IPC: G02B5/30 ,  G06F3/041 ,  H10K50/80 ,  H10K59/40

Abstract: An optical stack for a display device includes multiple layers that are incorporated into a display device that further includes a display panel. The optical stack includes a resin layer, an alignment film, an optical compensation layer, a polarizer, and a hard coat layer that are stacked in this order from a panel side. The optical stack is formed by preparing and coating a solution for each layer, and then curing and otherwise treating each layer as warranted for a particular layer, in turn to form the optical stack.

公开(公告)号：US11487149B2

公开(公告)日：2022-11-01

申请号：US17323515

申请日：2021-05-18

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Mikihiro Noma ,  Kiyoshi Minoura

IPC: G02F1/1335

Abstract: Provided is a curved display device capable of preventing or reducing local light leakage while achieving a certain contrast ratio. The curved display device includes a liquid crystal panel in a normally black mode. The liquid crystal panel includes a first polarizer, a liquid crystal cell, and a second polarizer in a stated order from a viewing surface side. The liquid crystal cell includes a first substrate including a transparent substrate, a liquid crystal layer, and a second substrate including a transparent substrate in a stated order from the viewing surface side. At least one of the first substrate or the second substrate is provided with a third polarizer on a surface of the transparent substrate closer to the liquid crystal layer.

公开(公告)号：US11435509B2

公开(公告)日：2022-09-06

申请号：US16666596

申请日：2019-10-29

Applicant: Sharp Kabushiki Kaisha

Inventor： Akira Sakai ,  Masahiro Hasegawa ,  Miho Yamada ,  Kiyoshi Minoura

IPC: G02B5/30 ,  G06F3/041 ,  H01L27/32 ,  H01L51/52

Abstract: An optical stack for a display device includes multiple layers that are incorporated into a display device that further includes a display panel. The optical stack includes a resin layer, an alignment film, an optical compensation layer, a polarizer, and a hard coat layer that are stacked in this order from a panel side. The optical stack is formed by preparing and coating a solution for each layer, and then curing and otherwise treating each layer as warranted for a particular layer, in turn to form the optical stack.

公开(公告)号：US11367965B2

公开(公告)日：2022-06-21

申请号：US16324849

申请日：2017-08-03

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Tadashi Ohtake ,  Takatoshi Orui ,  Wataru Nakamura ,  Kiyoshi Minoura ,  Masanobu Mizusaki

IPC: H01Q21/00 ,  G02F1/133 ,  H01Q3/44 ,  G02F1/1368 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1339 ,  H01Q1/36 ,  H01Q1/24 ,  H01Q1/38 ,  H01Q19/10 ,  H01Q21/06 ,  G09G3/36 ,  H01Q3/38

Abstract: Disclosed is a liquid crystal panel of a scanning antenna including a transmission and/or reception region in which a plurality of antenna units are arrayed, and a non-transmission and/or reception region, the liquid crystal panel including: a TFT substrate provided with a first dielectric substrate, a TFT supported by the first dielectric substrate, a gate bus line, a source bus line, and a patch electrode; a slot substrate provided with a second dielectric substrate, and a slot electrode formed on a first main surface of the second dielectric substrate and including a slot arranged so as to correspond to the patch electrode; a liquid crystal layer provided between the TFT substrate and the slot substrate and including a plurality of liquid crystal regions; and a plurality of sealing portions that respectively surround the plurality of liquid crystal regions and bond the TFT substrate and the slot substrate together. Each of the plurality of antenna units includes one of the plurality of liquid crystal regions.

公开(公告)号：US11347118B2

公开(公告)日：2022-05-31

申请号：US17393439

申请日：2021-08-04

Applicant: Sharp Kabushiki Kaisha

Inventor： Akira Sakai ,  Masahiro Hasegawa ,  Miho Yamada ,  Yuichi Kawahira ,  Koji Murata ,  Kiyoshi Minoura

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/135

Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a first polarizer plate, and a second polarizer plate. The first substrate includes a first dielectric substrate, a first electrode, a second electrode, and a first alignment film. The second electrode includes a plurality of slits and a conductive portion. The second substrate includes a second dielectric substrate and a second alignment film. The first substrate further includes a resin layer disposed between the second electrode and the first alignment film. The resin layer within the plurality of slits is as thick as or thicker than the second electrode. The plurality of slits are filled with the resin layer. A difference in height between the resin layer over the conductive portion of the second electrode and the resin layer within the plurality of slits of the second electrode is 10 nm or more.

公开(公告)号：US11181770B2

公开(公告)日：2021-11-23

申请号：US17197631

申请日：2021-03-10

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Akira Sakai ,  Masahiro Hasegawa ,  Miho Yamada ,  Koji Murata ,  Kiyoshi Minoura

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

Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a first polarizing plate, and a second polarizing plate. The first substrate includes a first dielectric substrate, first and second electrodes, provided over the first dielectric substrate and configured to generate a transverse electric field in the liquid crystal layer, at least either of which has a plurality of slits, and a first alignment film placed in contact with the liquid crystal layer. The first substrate further includes an inorganic insulating layer provided between the second electrode and the first alignment film. The difference between the refractive index of the inorganic insulating layer and the refractive index of the second electrode is smaller than or equal to 0.20. The thickness of the inorganic insulating layer is greater than or equal to 50% of the thickness of the second electrode and greater than or equal to 40 nm.

公开(公告)号：US11169419B2

公开(公告)日：2021-11-09

申请号：US16831657

申请日：2020-03-26

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: G02F1/1337

Abstract: A photo-alignment film of the present invention includes a polymer layer containing a photoreactive polymer and metal nanoparticles dispersed in the polymer layer at a concentration of 109 particles/(cm2×100 nm) or more and 1019 particles/(cm2×100 nm) or less. The metal nanoparticles have an absorption peak in a wavelength region of 420 nm or less. An absorbance A1 at the absorption peak of the metal nanoparticles and an absorbance A2 at an absorption peak of the polymer layer satisfy a relationship represented by the following formula 1: 0.2≤A1/A2≤25  (Formula 1).

公开(公告)号：US10996532B2

公开(公告)日：2021-05-04

申请号：US16138829

申请日：2018-09-21

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masanobu Mizusaki ,  Kiyoshi Minoura ,  Hiroshi Tsuchiya

IPC: G02F1/137 ,  G02F1/1339 ,  G02F1/1337 ,  C09K19/56 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/29

Abstract: The liquid crystal diffraction grating includes: paired substrates each including an electrode; a liquid crystal layer being held between the substrates; a sealant; and an alignment-controlling layer being disposed in a region surrounded by the sealant in a plan view and being in contact with the liquid crystal layer between the liquid crystal layer and each of the substrates, the alignment-controlling layer being configured to align liquid crystal molecules in a direction parallel to the substrates and containing a polymer of at least one monomer, the orientation of the liquid crystal molecules periodically rotating in at least one direction in a plan view of the liquid crystal layer in a state where the liquid crystal molecules are aligned in the direction parallel to the substrates.

公开(公告)号：US10968292B2

公开(公告)日：2021-04-06

申请号：US16141883

申请日：2018-09-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yasuhiro Shibai ,  Miho Yamada ,  Ken Atsumo ,  Kiyoshi Minoura

IPC: C08J5/18 ,  C08F22/10 ,  C08K5/09 ,  C08K5/092 ,  C08K5/521 ,  A61L2/23 ,  A01N57/14 ,  A01N25/10 ,  C02F1/50 ,  A01N37/04 ,  A01N37/10 ,  C08F2/48 ,  C08F220/28

Abstract: A synthetic polymer film is a synthetic polymer film whose surface has a plurality of raised or recessed portions. The synthetic polymer film has a crosslink structure, and the crosslink structure does not contain any nitrogen element that is a constituent of a urethane bond. The synthetic polymer film contains an organic carboxylic acid, and an amount of water required for dissolving 1 g of the organic carboxylic acid is equal to or greater than 10 mL and less than 10000 mL. At the lapse of 5 minutes since placing a 200 μL drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is not more than 5, and an area equivalent circle diameter of the aqueous solution is not less than 20 mm. A synthetic polymer film whose surface has a microbicidal activity can be produced using a photocurable resin composition which contains an organic carboxylic acid or a photoacid generator which generates the organic carboxylic acid.

公开(公告)号：US10955709B2

公开(公告)日：2021-03-23

申请号：US16649693

申请日：2017-09-29

Applicant: Sharp Kabushiki Kaisha ,  Sakai Display Products Corporation

Inventor： Hiroshi Tsuchiya ,  Kiyoshi Minoura ,  Shinji Shimada ,  Yuhki Kobayashi ,  Yozo Narutaki

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

Abstract: A display device includes a first substrate including a light-emitting element that is an upward light emission type and a transistor in a lower layer than the light-emitting element, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a sealing film formed in an island shape and covering the light-emitting element and a pixel electrode that is transparent. The pixel electrode includes a first portion not overlapping the sealing film and a second portion overlapping the sealing film.