公开(公告)号：US20180052346A1

公开(公告)日：2018-02-22

申请号：US15559820

申请日：2016-02-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  HIROYUKI HAKOI ,  MASAHIRO HASEGAWA ,  KIYOSHI MINOURA

IPC: G02F1/1347 ,  G02F1/139 ,  G02F1/1335

CPC classification number: G02F1/1347 ,  G02F1/133528 ,  G02F1/133536 ,  G02F1/13471 ,  G02F1/1393 ,  G02F2001/133531 ,  G02F2001/13478 ,  G02F2001/13712 ,  G02F2203/07

Abstract: The present invention provides a mirror display that exhibits non-deteriorated display quality in a display mode and is capable of adjusting the color of reflected light in a mirror mode. The mirror display includes, in the following order from the back surface side: a display device including a polarizing plate; a reflective polarizing plate; a birefringence mode liquid crystal display panel; and an absorptive polarizing plate, the reflective polarizing plate including a transmission axis parallel to the transmission axis of the absorptive polarizing plate, the liquid crystal display panel being capable of switching, in transmission of incident polarized light, between a non-coloring mode of not altering the polarization state of the polarized light and a coloring mode of altering the polarization state of the polarized light, the liquid crystal display panel selecting the coloring mode when the display device is in a non-display state, the liquid crystal display panel in the coloring mode increasing a retardation to a value greater than 275 nm in measurement with light having a wavelength of 550 nm.

公开(公告)号：US20220397711A1

公开(公告)日：2022-12-15

申请号：US17342964

申请日：2021-06-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Nathan James SMITH ,  JIYUN YU ,  ANDREW ACREMAN ,  KIYOSHI MINOURA ,  AKIRA SAKAI ,  MASAHIRO HASEGAWA ,  MIHO YAMADA

IPC: G02B5/30 ,  G02F1/1335 ,  G02B1/18

Abstract: A polarizer for use with a display device having a viewing area and a non-viewing area includes a patterned hydrophobic layer, a patterned lyotropic liquid crystal (LC) polarizer layer, a lyotropic LC polarizer alignment layer, a reactive mesogen (RM) quarter wave plate (QWP) layer, an RM QWP alignment layer, a substrate, and an adhesive. The patterned hydrophobic layer surrounds the patterned lyotropic LC polarizer layer. The patterned hydrophobic layer is wholly contained within the non-viewing area of the display device. The substrate is adjacent to the RM QWP alignment layer, and the adhesive is disposed between the substrate and the display device.

公开(公告)号：US20220179144A1

公开(公告)日：2022-06-09

申请号：US17603244

申请日：2019-04-16

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MIHO YAMADA ,  MASAHIRO HASEGAWA ,  AKIRA SAKAI

IPC: G02B5/30 ,  G02B1/18 ,  G02B1/118 ,  H01L51/00 ,  H01L27/15 ,  H01L27/32

Abstract: In a flexible display device, a transistor layer, a light-emitting element layer, a sealing layer, a first flexible substrate, a λ/4 layer, a linear polarizer, an overcoat layer, and a water repellent layer are provided in this order on a second flexible substrate, and the water repellent layer is provided so as to overlap with at least an end portion of the overcoat layer.

公开(公告)号：US20210215968A1

公开(公告)日：2021-07-15

申请号：US17213113

申请日：2021-03-25

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: G02F1/1335 ,  G02F1/13363

Abstract: A liquid crystal display device of the present invention includes in the following order from a viewing surface side a first polarizer, a first positive A plate having an in-plane retardation of 120 nm or greater and 155 nm or smaller, a positive C plate having a thickness retardation of 80 nm or greater and 100 nm or smaller, a first substrate, a second positive A plate having an in-plane retardation of 120 nm or greater and 155 nm or smaller, a horizontally aligned liquid crystal layer, a second substrate, a viewing angle compensation layer, and a second polarizer. The device further includes between the first polarizer and the first positive A plate a positive C plate having a thickness retardation of 30 nm or greater and 80 nm or smaller.

公开(公告)号：US20210109269A1

公开(公告)日：2021-04-15

申请号：US16499238

申请日：2018-03-23

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: G02B5/30 ,  G02F1/1335 ,  H01L51/52 ,  H01L27/32 ,  G06F3/041

Abstract: The present invention provides: (I) a display device including a display panel, a retardation layer, and a polarizer which are stacked in the stated order from a back surface side to a viewing surface side and integrated without an adhesive layer; and (II) a method for producing a display device including: forming a first alignment film on a display panel, applying a solution containing first polymerizable liquid crystal to the first alignment film, and curing the first polymerizable liquid crystal to produce a retardation layer; and forming a second alignment film on the retardation layer, applying a solution containing second polymerizable liquid crystal and a dichroic material to the second alignment film, and curing the second polymerizable liquid crystal to produce a polarizer.

公开(公告)号：US20210048568A1

公开(公告)日：2021-02-18

申请号：US16979674

申请日：2018-03-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  MASAHIRO HASEGAWA

IPC: G02B5/30 ,  H01L27/12 ,  G02F1/1337

Abstract: In order to make a step of forming an coated-type polarizer easier, provided is a display device including, from a lower layer, a TFT layer, a light-emitting layer, a sealing layer, and a polarization layer in this order, in which the polarization layer includes a polymerizable liquid crystal layer containing a polymerizable liquid crystal into which a dichroic pigment is mixed and an alignment film coming in contact with a portion of the polymerizable liquid crystal layer to align the polymerizable liquid crystal contained in the polymerizable liquid crystal layer with which the alignment film is in contact, and in a display region, a region in which the polymerizable liquid crystal layer and the alignment film of the polarization layer come into contact with each other is a polarization portion, and in a frame region surrounding the display region, a region in which the polymerizable liquid crystal layer and the alignment film of the polarization layer do not come in contact with each other is a black frame portion.

公开(公告)号：US20200310200A1

公开(公告)日：2020-10-01

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：US20200041830A1

公开(公告)日：2020-02-06

申请号：US16499145

申请日：2018-03-22

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: G02F1/13363 ,  G02F1/1335

Abstract: The present invention provides a retardation substrate capable of producing a liquid crystal display device more easily and a liquid crystal display device provided with the retardation substrate.The retardation substrate of the present invention is a retardation substrate including a base material and an optical functional layer provided on one surface of the base material, in which the optical functional layer includes a retardation layer, and a direction of a slow axis of a surface of the optical functional layer is different from a direction of a slow axis inside the retardation layer.

公开(公告)号：US20190384101A1

公开(公告)日：2019-12-19

申请号：US16486726

申请日：2018-02-14

Applicant: SHARP KABUSHIKI KAISHA

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

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

Abstract: A liquid crystal display panel includes a first λ/4 retardation layer, a first substrate, a color filter layer, a liquid crystal layer containing horizontally aligned liquid crystals, and a second λ/4 retardation layer that is formed from a different material from the first λ/4 retardation layer between the first substrate and the color filter layer or between the color filter layer and the liquid crystal layer. The second λ/4 retardation layer has a smaller thickness in a region overlapping the blue color filter than in a region overlapping the green color filter. The first λ/4 retardation layer provides a retardation Rout(λ) to light having a wavelength of λ nm. The second λ/4 retardation layer provides a retardation Rin(λ). The retardation Rout(λ) and the retardation Rin(λ) satisfy the following formula (1) in the region overlapping the blue color filter. −1.0 nm

公开(公告)号：US20190278010A1

公开(公告)日：2019-09-12

申请号：US16291841

申请日：2019-03-04

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: G02B5/30 ,  H01L27/32 ,  G02F1/1335 ,  G02F1/13363

Abstract: A circularly polarizing plate includes: a first retardation layer having negative refractive index anisotropy; a second retardation layer having positive refractive index anisotropy; and a linear polarizer, the first retardation layer and the second retardation layer being disposed such that their optical axes are parallel to each other, the first retardation layer providing an in-plane retardation whose absolute value is |R1(λ)| to light having a wavelength of λ nm, the second retardation layer providing an in-plane retardation whose absolute value is |R2(λ)| to light having a wavelength of λ nm, the first retardation layer and the second retardation layer satisfying the following formulas (1) to (4): |R1(450)|>|R1(550)|>|R1(650)|  (1) |R2(550)|>|R1(550)|  (2) |R2(550)|−|R1(550)|>|R2(450)|−|R1(450)|  (3) |R2(650)|−|R1(650)|>|R2(550)|−|R1(550)|  (4)