公开(公告)号：US20190094593A1

公开(公告)日：2019-03-28

申请号：US16147386

申请日：2018-09-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MASAHIRO HASEGAWA ,  KOJI MURATA ,  YUICHI KAWAHIRA ,  TAKAKO KOIDE ,  AKIRA SAKAI ,  KIYOSHI MINOURA

IPC: G02F1/13363 ,  F21V8/00 ,  G02F1/1335

Abstract: Provided is a liquid crystal module being excellent in durability and manufacturing cost and exhibiting reduced variations in peak luminance that are caused depending on an azimuth angle during black display when the polar angle is large. The liquid crystal module includes: a liquid crystal panel including a first polarizer, a first substrate, a liquid crystal layer, an in-cell retardation layer (λ/4 plate of nx>ny=nz), a second substrate, an out-cell retardation layer (λ/4 plate of nx>ny≥nz), and a second polarizer, from a back side toward an observation side; and a backlight. The backlight includes a first prism sheet including a first ridge line, and a second prism sheet provided on a back side from the first prism sheet and including a second ridge line orthogonal to the first ridge line. The first ridge line is parallel to an azimuth at which the liquid crystal panel has a maximized transmittance in an oblique direction during black display.

公开(公告)号：US20180348553A1

公开(公告)日：2018-12-06

申请号：US15780541

申请日：2016-11-30

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAKAKO KOIDE ,  KIYOSHI MINOURA ,  KOZO NAKAMURA ,  AKIRA SAKAI ,  MASAHIRO HASEGAWA

IPC: G02F1/1337 ,  G02F1/1335 ,  G02F1/139 ,  G02F1/13363 ,  G02F1/1343 ,  G02F1/1333

CPC classification number: G02F1/1333 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/139

Abstract: A liquid crystal display device includes a transmissive region and a reflective region, and includes a backlight unit and a liquid crystal display panel including a first substrate, a first alignment film, a liquid crystal layer containing liquid crystal molecules having positive anisotropy of dielectric constant, a second alignment film, and a second substrate in the given order from closest to farthest from the backlight unit, the first substrate including a first electrode disposed in the transmissive region and the reflective region and a second electrode disposed in the transmissive region, the first substrate or the second substrate including a third electrode disposed in the reflective region, the first electrode including one or more first linear electrode portions in the transmissive region, with no voltage applied to the liquid crystal layer, the liquid crystal molecules in the transmissive region forming a given twist angle θ1, the liquid crystal molecules in the reflective region forming a given twist angle θ2, and an alignment azimuth of liquid crystal molecules adjacent to the first alignment film or the second alignment film in the reflective region being parallel to the alignment azimuth of liquid crystal molecules adjacent to the first alignment film in the transmissive region.

公开(公告)号：US20180026212A1

公开(公告)日：2018-01-25

申请号：US15549023

申请日：2016-01-29

Applicant: Sharp Kabushiki Kaisha

Inventor： MASAHIRO HASEGAWA ,  YUKI YASUDA ,  TAKASHI OCHI ,  HIROSHI SUGIMOTO ,  SHOJI OKAZAKI ,  KENJI MISONO

IPC: H01L51/00 ,  H01L51/52 ,  H01L51/56 ,  H01L27/32

CPC classification number: H01L51/0097 ,  G09F9/301 ,  H01L27/32 ,  H01L27/3244 ,  H01L51/50 ,  H01L51/524 ,  H01L51/5281 ,  H01L51/56 ,  H01L2227/323 ,  H01L2251/5338 ,  Y02E10/549

Abstract: Disclosed is a display device including: a display panel 40 including an element substrate 20 having a first resin substrate 10a over which a first underlayer film 11a and a plurality of switching elements are provided, and a counter substrate 30 having a second resin substrate 10b on which a second underlayer film 11b is provided; and a functional sheet 45 bonded to a surface, of the display panel 40, close to the counter substrate 30. The display device has a curved portion C in which the display panel 40 is able to be curved at a predetermined radius of curvature, and a pair of flat portions between which the curved portion C is interposed and a predetermined angle is formed, and in which the display panel 40 is held flatly. The functional sheet 45 is bonded such that the curved portion C is able to be maintained at the predetermined radius of curvature.

公开(公告)号：US20230185123A1

公开(公告)日：2023-06-15

申请号：US18106913

申请日：2023-02-07

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  YUICHI KAWAHIRA ,  MASAHIRO HASEGAWA ,  KIYOSHI MINOURA

IPC: G02F1/1335 ,  G02B5/30 ,  G02F1/13363

CPC classification number: G02F1/133528 ,  G02F1/133531 ,  G02B5/3083 ,  G02F1/13363 ,  G02F1/133504

Abstract: Provided is a liquid crystal display device and a polarizing plate capable of improving the contrast ratio in the front direction. The polarizing plate includes a pair of polarizers including a first polarizer and a second polarizer whose transmission axes are parallel to each other; a retarder between the paired polarizers; and a diffusion layer in at least one of a region between the paired polarizers or a region on a side without the retarder of the first polarizer.

公开(公告)号：US20230017351A1

公开(公告)日：2023-01-19

申请号：US17379851

申请日：2021-07-19

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MIHO YAMADA ,  MASAHIRO HASEGAWA ,  AKIRA HIRAI ,  AKIRA SAKAI

IPC: G02B5/30

Abstract: A polarizing plate includes a polarizing layer over a base material, an inorganic insulation layer over the polarizing layer, and a water-resistant layer over the inorganic insulation layer, where the water-resistant layer covers sidewalls of the polarizing layer and sidewalls of the inorganic insulation layer, when the base material is viewed from a top plan view.

公开(公告)号：US20200310182A1

公开(公告)日：2020-10-01

申请号：US16829989

申请日：2020-03-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： KOJI MURATA ,  AKIRA SAKAI ,  YUICHI KAWAHIRA ,  TAKAKO KOIDE ,  MASAHIRO HASEGAWA ,  KIYOSHI MINOURA

IPC: G02F1/13363 ,  G02F1/1335

Abstract: The present invention relates to a method for producing a liquid crystal panel. The method includes curing a first reactive mesogen layer with ultraviolet light at an illuminance within a range of 40 to 90 mW/cm2. The liquid crystal panel includes a first transparent base material, a TFT layer and a first alignment film stacked in order on the first transparent base material, a second transparent base material, a color filter layer, an in-cell retardation layer, and a second alignment film stacked in order on the second transparent base material, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, an out-cell retardation layer disposed on a side opposite to a color filter layer side of the second transparent base material, and a pair of linearly polarizing plates arranged so as to sandwich the first transparent base material and the out-cell retardation layer and having transmission axes orthogonal to each other. The in-cell retardation layer includes the first reactive mesogen layer and a second reactive mesogen layer. The first reactive mesogen layer and the second reactive mesogen layer have different material wavelength dispersibilities and have slow axes arranged orthogonal to each other.

公开(公告)号：US20190302520A1

公开(公告)日：2019-10-03

申请号：US16368530

申请日：2019-03-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MASAHIRO HASEGAWA ,  AKIRA SAKAI ,  TAKAKO KOIDE ,  YUICHI KAWAHIRA ,  KOJI MURATA ,  KIYOSHI MINOURA

IPC: G02F1/1335 ,  G02F1/13363 ,  G02F1/1368

Abstract: The present invention provides a color filter substrate in which a step on the surface of the base of a retardation layer and light leakage from a black matrix are prevented and that can prevent parallax color mixture when used in a liquid crystal display device, and a liquid crystal display device including the color filter substrate. The color filter substrate includes a substrate, a metal black matrix disposed on the substrate and provided with an opening, a color layer covering the opening and made of coloring photosensitive resin, and a retardation layer disposed on the color layer.

公开(公告)号：US20180231844A1

公开(公告)日：2018-08-16

申请号：US15750157

申请日：2016-07-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  KOHZOH NAKAMURA ,  MASAHIRO HASEGAWA ,  TAKAKO KOIDE ,  KIYOSHI MINOURA

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

CPC classification number: G02F1/133634 ,  G02B5/3083 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/134363 ,  G02F2001/133541 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2001/133638 ,  G02F2001/133738 ,  G02F2413/02 ,  G02F2413/04 ,  G02F2413/05 ,  G02F2413/06 ,  G02F2413/11 ,  G02F2413/12 ,  G02F2413/13 ,  G02F2413/14

Abstract: A liquid crystal display panel (100A) includes a first polarizing plate (22) and a first phase difference plate (32a) disposed on an observer side, and a second polarizing plate (24) and a second phase difference plate (34a) disposed on a back surface side. Δnd of a liquid crystal layer having a homogeneous alignment when no electrical field is applied is 360 nm or greater and 490 nm or less, and an in-plane retardation R1 of the first phase difference plate is 100 nm or greater and 160 nm or less. A thickness direction retardation of at least one of the first and second phase difference plates has a negative value. The slow axes of the first and second phase difference plates are substantially parallel to each other and substantially orthogonal to an azimuthal direction of the liquid crystal director.

公开(公告)号：US20210286213A1

公开(公告)日：2021-09-16

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 ,  G02F1/1337 ,  G02F1/1343

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：US20210132450A1

公开(公告)日：2021-05-06

申请号：US16630115

申请日：2018-07-06

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  YUICHI KAWAHIRA ,  KOJI MURATA ,  MASAHIRO HASEGAWA ,  TAKAKO KOIDE ,  KOZO NAKAMURA ,  KIYOSHI MINOURA

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

Abstract: The present invention provides a liquid crystal display device of a transverse electric field mode that may inhibit internal reflection and realize proper black display to which coloring does not occur. The present invention provides a liquid crystal display device including a first linear polarizer, a first λ/4 retardation layer, a first substrate, a second λ/4 retardation layer configured with a different material from the first λ/4 retardation layer, a liquid crystal layer that contains liquid crystals which are horizontally aligned in a case where no voltage is applied, plural electrode pairs that generate a transverse electric field in the liquid crystal layer by a voltage being applied, a second substrate, a second linear polarizer, and a backlight. In a case where a color of light emitted from the backlight is expressed by using chromaticity coordinates (x, y) of an XYZ color system, both of x and y are 0.32 or greater. The plural electrode pairs include a red electrode pair arranged in a red sub-pixel, a green electrode pair arranged in a green sub-pixel, and a blue electrode pair arranged in a blue sub-pixel. A white display applied voltage of the blue electrode pair is different from the white display applied voltage of the red electrode pair and the white display applied voltage of the green electrode pair.