Circular Patents (Class 349/98)
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Patent number: 12174386Abstract: A display device includes a display panel, a linearly polarizing plate, and a first polarized light-selective reflector disposed sequentially toward a viewer; a first phase difference plate and a first lens disposed closer to the viewer relative to the first polarized light-selective reflector and facing each other; a semi-transparent mirror disposed closer to the viewer relative to the first phase difference plate and the first lens; a second lens and a second phase difference plate disposed closer to the viewer relative to the semi-transparent mirror and facing each other; and a second polarized light-selective reflector disposed closer to the viewer relative to the second lens and the second phase difference plate. The first lens and the second lens have shapes asymmetric about the semi-transparent mirror as a plane of symmetry in a cross-sectional view in a direction from the display panel toward the second polarized light-selective reflector.Type: GrantFiled: November 27, 2023Date of Patent: December 24, 2024Assignee: SHARP DISPLAY TECHNOLOGY CORPORATIONInventor: Naru Usukura
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Patent number: 12169334Abstract: A head-up display unit with a picture generating unit for creating an image to be displayed as a virtual image to a viewer and an optical unit for projecting the image to be displayed towards an eyebox is disclosed. The picture generating unit comprises a liquid crystal layer, a front polarizer, a back polarizer and a reflective polarizer. The reflective polarizer is arranged upstream the front polarizer and downstream the liquid crystal layer.Type: GrantFiled: July 26, 2021Date of Patent: December 17, 2024Assignee: Continental Automotive Technologies GmbHInventor: Andrei Pasca
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Patent number: 12150368Abstract: Provided is a bendable organic EL display device in which change in tint at a bending portion before and after bending is small. The organic electroluminescent display device is a bendable organic electroluminescent display device including a circularly polarizing plate and a bendable organic EL display panel, in which the circularly polarizing plate includes a polarizer and a retardation layer from a viewing side, the retardation layer includes a first optically anisotropic layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, and the first optically anisotropic layer satisfies a predetermined requirement.Type: GrantFiled: February 14, 2023Date of Patent: November 19, 2024Assignee: FUJIFILM CorporationInventors: Toshihiro Konishi, Taro Hashizume
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Patent number: 12117694Abstract: An optical element includes a cholesteric liquid crystal layer obtained by cholesterically aligning a liquid crystal compound, in which the cholesteric liquid crystal layer has a region where a refractive index nx in a slow axis direction and a refractive index ny in a fast axis direction in a plane satisfy nx>ny, a helical axis of the cholesteric alignment is parallel to a thickness direction of the cholesteric liquid crystal layer, and a helical pitch in the cholesteric alignment gradually changes in the thickness direction of the cholesteric liquid crystal layer.Type: GrantFiled: January 9, 2023Date of Patent: October 15, 2024Assignee: FUJIFILM CorporationInventors: Yukito Saitoh, Akiko Watano
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Patent number: 12110439Abstract: A laminate including a vertically oriented liquid crystal cured film and a horizontally oriented phase difference film is provided. The vertically oriented liquid crystal cured film is a cured product of a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound and a dichroic coloring matter. The composition includes, as the dichroic coloring matter, at least one type of dichroic coloring matter having maximum absorption between a wavelength of 400 nm and a wavelength of 750 nm. The vertically oriented liquid crystal cured film is a cured product of the polymerizable liquid crystal composition that is cured in a state in which the polymerizable liquid crystal compound is oriented in a vertical direction with respect to a flat plane of the liquid crystal cured film, and satisfies the following formula (1) and the following formula (2): 0.001?AxC?0.3??(1); AxC(z=60)/AxC>2??(2).Type: GrantFiled: November 1, 2019Date of Patent: October 8, 2024Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Tatsuaki Kasai, Nobuyuki Hatanaka
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Patent number: 12101963Abstract: A display device includes an active matrix substrate including a transistor element and a light-emitting element layer provided on the active matrix substrate and including a first electrode, a second electrode, a function layer including a light-emitting layer between the first electrode and the second electrode, and a sealing layer. The display device includes: a half mirror provided on a display surface side of the light-emitting element layer; and a first ?/4 plate, a reflective polarizer, and an absorbing polarizer which are provided in order from the light-emitting element layer side between the light-emitting element layer and the half mirror.Type: GrantFiled: March 1, 2019Date of Patent: September 24, 2024Assignee: SHARP KABUSHIKI KAISHAInventors: Ryuzo Yuki, Kiyoshi Minoura, Kohzoh Nakamura, Akira Sakai
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Patent number: 12038649Abstract: A switchable privacy display comprises a spatial light modulator, and switchable liquid crystal retarder arranged between crossed quarter-wave plates and polarisers. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance to reduce the visibility of the display to off-axis snoopers. The display may be rotated to achieve privacy operation in landscape and portrait orientations. Further, display reflectivity may be reduced for on-axis reflections of ambient light, while reflectivity may be increased for off-axis light to achieve increased visual security. In a public mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified. The display may also be operated to switch between day-time and night-time operation, for example for use in an automotive environment.Type: GrantFiled: July 19, 2021Date of Patent: July 16, 2024Assignee: RealD Spark, LLCInventors: Michael G. Robinson, Graham J. Woodgate, Ben Ihas
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Patent number: 12025881Abstract: According to one embodiment, a display device including a liquid crystal layer containing strip-like polymers and liquid crystal molecules, a third transparent substrate, and a transparent layer disposed on the third transparent substrate and having a refractive index lower than that of the third transparent substrate, wherein the transparent layer includes strip portions which include first and second end portions, and a middle portion, the first end portion has a first width greater than a width of the middle portion, the second end portion has a second width greater than the width of the middle portion, and first wiring lines overlap the strip portions, respectively and extend in a same direction.Type: GrantFiled: July 20, 2023Date of Patent: July 2, 2024Assignee: Japan Display Inc.Inventors: Tenfu Nakamura, Kentaro Okuyama, Kojiro Ikeda
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Patent number: 11982906Abstract: Diffractive optical structures, lenses, waveplates, devices, systems, and methods, which have the same effect on light regardless of the polarization state of the light, utilizing systems of polarization discriminator diffractive waveplate optics and differential polarization converters with special arrangements that do not require introducing spatial separation between the layers.Type: GrantFiled: August 27, 2021Date of Patent: May 14, 2024Assignee: Beam Engineering for Advanced Measurements Co.Inventors: Nelson V. Tabirian, David E. Roberts
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Patent number: 11948923Abstract: A display device including a first sub-pixel and a second sub-pixel is provided. The first sub-pixel includes a first light emitting unit and a first wavelength conversion layer disposed thereon. The first sub-pixel provides a first light emitted from the first light emitting unit and converted by the first wavelength conversion layer. The first light includes a first main-peak and a first sub-peak. The second sub-pixel includes a second light emitting unit and a second wavelength conversion layer disposed thereon. The second sub-pixel provides a second light emitted from the second light emitting unit and converted by the second wavelength conversion layer. The second light includes a second main-peak and a second sub-peak. A first wavelength difference between the first main-peak and the second main-peak is less than 20 nm, and the first wavelength difference is less than a second wavelength difference between the first sub-peak and the second sub-peak.Type: GrantFiled: January 27, 2022Date of Patent: April 2, 2024Assignee: Innolux CorporationInventors: Jui-Jen Yueh, Kuan-Feng Lee
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Patent number: 11835744Abstract: Provided is a sensor having a high SN ratio. The sensor includes a light source, a band pass filter, and a light-receiving element, in which the band pass filter includes two cholesteric liquid crystal layers and a discontinuous layer disposed between the two cholesteric liquid crystal layers, in the two cholesteric liquid crystal layers, helical twisted directions and helical pitches are the same, and in a case where the discontinuous layer is a layer other than a cholesteric liquid crystal layer and a wavelength having a lowest reflectivity in a selective reflection wavelength range of the band pass filter is represented by ?m [nm], a thickness [nm] is in a range of “30×(?m/550) to 150×(?m/550)”.Type: GrantFiled: November 9, 2021Date of Patent: December 5, 2023Assignee: FUJIFILM CorporationInventors: Hiroshi Sato, Katsumi Sasata, Yukito Saitoh
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Patent number: 11754874Abstract: Provided is a liquid crystal display panel, including: first and second substrates; a liquid crystal layer between the first and second substrates; a first linear polarizer provided at a side of the first substrate facing away from the liquid crystal layer and having an absorption axis extending along a first direction; a second linear polarizer provided at a side of the second substrate facing away from the liquid crystal layer and having an absorption axis extending along a direction perpendicular to the first direction; a first quarter-wave plate provided at the side of the first substrate facing away from the liquid crystal layer; a second quarter-wave plate between the first substrate and the liquid crystal layer; and a first half-wave plate provided at the side of the first substrate facing away from the liquid crystal layer, and/or a second half-wave plate between the first substrate and the liquid crystal layer.Type: GrantFiled: September 30, 2020Date of Patent: September 12, 2023Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.Inventors: Yuanying Wang, Jun Zhou, Fan Tian, Yuefeng Gu
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Patent number: 11747672Abstract: A display system includes a backlight configured to project light. A first display unit is disposed proximate the backlight. A second display unit is disposed proximate the first display unit. A microcontroller is in communication with one or more of the backlight, the first display unit and the second display unit. The microcontroller executes instructions to adjust the first display unit between a first transmissive state and a second transmissive state.Type: GrantFiled: February 24, 2020Date of Patent: September 5, 2023Assignee: Visteon Global Technologies, Inc.Inventors: Paul Fredrick Luther Weindorf, David Whitton
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Patent number: 11644705Abstract: Provided is a display apparatus including a first display panel, a second display panel, and at least one light-absorbing layer. The first display panel has a first splicing surface. The second display panel has a second splicing surface opposite to the first splicing surface. The at least one light-absorbing layer is disposed on at least one of the first splicing surface and the second splicing surface.Type: GrantFiled: October 25, 2021Date of Patent: May 9, 2023Assignee: Au Optronics CorporationInventors: Hao-Shiun Yang, Chien-Chi Chen, Shang-Chiang Lin
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Patent number: 11630362Abstract: A one-way glass with switching modes includes an absorbing layer located on a weak light side, a reflecting layer located on an intense light side, and a converting layer stacked between the absorbing layer and the reflecting layer. The absorbing layer absorbs first polarized light and allows second polarized light to pass through. The reflecting layer reflects the first polarized light and allows the second polarized light to pass through. Unpolarized light incident from the weak light side or from the intense light side is respectively converted into the polarized light. During the process of gradually adjusting the converting layer from a twisted state to a vertical state, rotated angles of polarization directions of the first polarized light and the second polarized light gradually decrease.Type: GrantFiled: June 17, 2022Date of Patent: April 18, 2023Assignee: NATIONAL SUN YAT-SEN UNIVERSITYInventors: Tsung-Hsien Lin, Chun-Ta Wang, Heng-Yi Tseng, Cheng-Chang Li, Li-Min Chang, Kuan-Wu Lin, Hung-Chang Jau
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Patent number: 11526053Abstract: The present disclosure provides an optical assembly, a liquid crystal display device, and an electronic equipment. The optical assembly includes: a linear polarizer, a half-wave plate, and a quarter-wave plate stacked in sequence. An absorption axis of the linear polarizer is substantially perpendicular to a first direction, and the first direction is parallel to a surface of the linear polarizer; an angle between an in-plane slow axis of the half-wave plate and the first direction is in a range of 100° to 110°; an angle between an in-plane slow axis of the quarter-wave plate and the first direction is in a range of 160° to 170°.Type: GrantFiled: September 26, 2019Date of Patent: December 13, 2022Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.Inventors: Xuan Zhong, Hongliang Yuan, Jian Wang, Qi Zheng, Wei Zhao, Xiaojuan Wu, Zhangxiang Cheng, Jiaxing Wang
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Patent number: 11360319Abstract: Described examples include a light tunnel of a material, the light tunnel including: a first section having a first surface and an opposing second surface, a second section having a third surface and an opposing fourth surface, a third section having a fifth surface and an opposing sixth surface, and a fourth section having a seventh surface and an opposing eighth surface; a first crease between the first section and the second section, a second crease between the second section and the third section, a third crease between the third section and the fourth section, and an intersection between an end of the first section and the fourth section; and a reflective coating forming a reflective surface on the first, third, fifth and seventh surfaces, the reflective surface being continuous across at least one of the creases, and the reflective coating being discontinuous at the intersection.Type: GrantFiled: March 4, 2020Date of Patent: June 14, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Zhongyan Sheng, Don Holamon, Steven Edward Smith
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Patent number: 11313975Abstract: An add-on device configured to reduce the power level of reflected paths of GNSS signals reaching a GNSS receiver's antenna, the associated GNSS receiver set, some equipment embedding the add-on device, and the associated method to reduce the power level of reflected GNSS signals are provided. The GNSS signals are transmitted according to a first polarization, and the add-on device comprises a material configured to be transparent to the first polarization and to reflect GNSS signals polarized according to a second polarization orthogonal to the first polarization.Type: GrantFiled: November 14, 2018Date of Patent: April 26, 2022Assignee: CENTRE NATIONAL D'ETUDES SPATIALESInventors: Nicolas Capet, François-Xavier Marmet
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Patent number: 11307337Abstract: 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.Type: GrantFiled: March 23, 2018Date of Patent: April 19, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Akira Sakai, Masahiro Hasegawa, Atsushi Ban, Koji Murata, Yuichi Kawahira, Kiyoshi Minoura, Takako Koide, Kozo Nakamura
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Patent number: 11286423Abstract: A laminate is provided having excellent adhesiveness between a light absorption anisotropic film and a barrier layer, a manufacturing method of the laminate, and an image display device using the laminate. A laminate having: a barrier layer A; and a light absorption anisotropic film B, in which the barrier layer A is adjacently provided on the light absorption anisotropic film B, a relationship between a highest content of a compound A1 contained in the barrier layer A and a highest content of a compound B1 contained in the light absorption anisotropic film B satisfies a relationship in which a value of distance calculated from Hansen solubility parameters and represented by Formula (I) is within a range of 0.0 to 5.0, and the light absorption anisotropic film B contains a component same as the compound A1. distance={4×(?D(B1)??D(A1))2+(?P(B1)??P(A1))2+(?H(B1)??H(A1))2}0.Type: GrantFiled: August 3, 2020Date of Patent: March 29, 2022Assignee: FUJIFILM CorporationInventors: Yumi Katou, Jun Takeda
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Patent number: 11275272Abstract: A liquid crystal display device includes a liquid crystal display panel including a light reflective portion, a first polarizing plate located on a display surface-facing side, a half-wavelength plate and a first quarter-wavelength plate disposed between the liquid crystal display panel and the first polarizing plate. A liquid crystal layer corresponding to the light reflective portion exhibits a retardation which is less than one-half of a retardation of the half-wavelength plate. The first quarter-wavelength plate has a slow axis which intersects a liquid-crystal molecular orientation axis at a time of no electric field application. The expression nx1>nz1>ny1 is satisfied, where nx1, ny1 and nz1 are the refractive indices at each orientation of the half-wavelength plate, and the expression nx2>nz2=ny2 is satisfied, where nx2, ny2 and nz2 are the refractive indices at each orientation of the first quarter-wavelength plate.Type: GrantFiled: July 12, 2019Date of Patent: March 15, 2022Assignee: KYOCERA CorporationInventor: Yuji Soda
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Patent number: 11262608Abstract: An electronic device includes a liquid crystal display device having a first substrate, a second substrate bonded to the first substrate, with liquid crystal material held between the first substrate and the second substrate, and an upper polarizing plate affixed to the second substrate. A protective member is disposed over the upper polarizing plate, and an adhesive member is disposed between the protective member and the upper polarizing plate without an air layer between the protective member and the upper polarizing plate. The protective member is configured as a protective cover of the electronic device.Type: GrantFiled: October 5, 2020Date of Patent: March 1, 2022Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventor: Koichi Fukuda
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Patent number: 11061270Abstract: To provide a decorative film capable of applying a visual effect of making a pattern not visually recognizable, in a case where it is seen from the front, and making it visually recognizable, in a case where it is obliquely seen. a circular polarization plate including a linear polarization plate, and a laminate of a uniaxial retardation layer or a biaxial retardation layer; and a circularly polarized light reflection layer which reflects circularly polarized light having a revolution direction opposite to that of light transmitted through the circular polarization plate in a vertical direction from the linear polarization plate side are included.Type: GrantFiled: August 6, 2019Date of Patent: July 13, 2021Assignee: FUJIFILM CorporationInventors: Shigeaki Nimura, Hiroshi Inada, Mitsuyoshi Ichihashi
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Patent number: 10910544Abstract: Superconducting circuits and memories that use a magnetic Josephson junction (MJJ) device as a pi inverter are disclosed. The MJJ device includes superconducting layers configured to allow a flow of a supercurrent through the MJJ device. The MJJ device further includes a magnetic layer arranged between the superconducting layers, where the magnetic layer has an associated magnetization direction, and where the first state of the MJJ device corresponds to a zero-phase of a supercurrent flowing through the MJJ device and the second state of the MJJ device corresponds to a ?-phase of the supercurrent flowing through the MJJ device. In response to an application of a magnetic field, without any change in the magnetization direction of the magnetic layer, the MJJ device is configured to switch from the first state to the second state responsive to a change in a phase of the supercurrent.Type: GrantFiled: February 26, 2019Date of Patent: February 2, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Thomas F. Ambrose, James M. Murduck
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Patent number: 10890805Abstract: A liquid crystal display device includes sequentially from a viewing surface side: a first polarizer; an out-cell retardation layer; a first substrate; an in-cell retardation layer; a horizontally aligned liquid crystal layer; a second substrate; and a second polarizer. The liquid crystal display device includes a viewing angle compensation film between the first polarizer and the out-cell retardation layer or between the second substrate and the second polarizer. The out-cell retardation layer is a laminate including sequentially from a viewing surface side: a first retardation layer having an NZ coefficient of 1.0-1.1 and an Re of 120 nm or greater and smaller than 137.5 nm; and a second retardation layer having an Re of 0-10 nm and an Rth of 80-150 nm. The in-cell retardation layer is a third retardation layer having an NZ coefficient of 0.7-1.4 and an Re of 120 nm or greater and smaller than 137.5 nm.Type: GrantFiled: December 5, 2019Date of Patent: January 12, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Masahiro Hasegawa, Akira Sakai, Takako Koide, Yuichi Kawahira, Koji Murata, Kiyoshi Minoura
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Patent number: 10890777Abstract: Disclosed is a selectively reflective member which can uniformly reflect only a desired wavelength with high efficiency even in a large area and, at the same time, is highly cost effective. Specifically, there is provided an electromagnetic wave reflecting member that reflects electromagnetic waves with a specific wavelength, the electromagnetic wave reflecting member comprising a first selectively reflective layer that reflects only a clockwise or counterclockwise circularly polarized light component with wavelength ? in incident electromagnetic waves, a phase difference layer, and a second selectively reflective layer that reflects only a clockwise or counterclockwise circularly polarized light component with wavelength ?, provided in that order, the phase difference layer having a retardation satisfying the following equation: Re={(2n+1)/2±0.2}×? wherein Re represents average retardation; ? represents wavelength; and n is an integer of 1 or more.Type: GrantFiled: August 22, 2018Date of Patent: January 12, 2021Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takashi Kuroda, Satoru Hamada, Keiji Kashima
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Patent number: 10816709Abstract: A light reflection film includes at least one light reflection layer RPRL in which a cholesteric liquid crystal phase of a right-handed helical structure having right circularly polarized light reflection ability is fixed; and at least one light reflection layer LPRL in which a cholesteric liquid crystal phase of a left-handed helical structure having left circularly polarized light reflection ability is fixed. A total of three or more layers of the light reflection layer(s) RPRL and the light reflection layer(s) LPRL are laminated. The light reflection layer(s) RPRL and the light reflection layer(s) LPRL laminated each have a selective reflection center wavelength shifted by an interval of 10 nm or more and 160 nm or less between two light reflection layers adjacent to each other.Type: GrantFiled: July 1, 2019Date of Patent: October 27, 2020Assignee: Nippon Kayaku Kabushiki KaishaInventors: Tomoyuki Hayasaki, Hitoshi Asami, Yoshiyuki Yahagi, Kouichi Tanaka
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Patent number: 10768351Abstract: Provided is an optical laminate including a resin layer and an adhesive layer, and being excellent in adhesiveness between these layers. The optical laminate includes: a resin layer; an adhesive layer arranged on at least one side of the resin layer; and an intermediate layer formed between the resin layer and the adhesive layer, the intermediate layer containing at least part of a material constituting the resin layer and at least part of a material constituting the adhesive layer, in which the intermediate layer has a thickness of from 20 nm to 200 nm. In one embodiment, the resin layer includes a resin film having optical anisotropy.Type: GrantFiled: March 21, 2016Date of Patent: September 8, 2020Assignee: NITTO DENKO CORPORATIONInventor: Mitsuru Suzuki
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Patent number: 10718889Abstract: Exemplary thin-film optical devices have first and second layer groups disposed as a layer stack on a substrate. The first layer group comprises a first PPN layer, a first LCP layer, and a first barrier layer all superposed. The second layer group is superposed relative to the first layer group, and includes a second PPN layer, a second LCP layer, and a second barrier layer all superposed. The first and second layer groups cooperate to polarize multiple wavelengths of an incident light flux in a broadband and/or wide-angle manner Each of the layer groups has an alignment layer, a respective liquid-crystal polymer layer, and a barrier layer.Type: GrantFiled: March 11, 2019Date of Patent: July 21, 2020Assignee: The Arizona Board of Regents on Behalf of the University of ArizonaInventors: Stanley Pau, Wei-Liang Hsu
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Patent number: 10658447Abstract: A display device including a plurality of light emitting elements including first, second, and third light emitting elements; and a color filter including first, second, and third color filters corresponding to respective first, second, and third light emitting elements, wherein first and second light-shielding members are disposed at a light emission direction, first ends of the first and second color filters overlap with the first light-shielding member in a cross sectional view, a first distance between the first end of the first color filter and a first side surface of the first light-shielding member and a second distance between the first end of the second color filter and a second side surface of the second light-shielding member are different in the cross sectional view, a thickness of the first color filter and a thickness of the second color filter are different.Type: GrantFiled: May 22, 2019Date of Patent: May 19, 2020Assignee: Sony CorporationInventors: Yosuke Motoyama, Reo Asaki
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Patent number: 10466541Abstract: A display device including a first substrate, a pixel unit disposed on the first substrate and including a first sub-pixel electrode, a second sub-pixel electrode and a third sub-pixel electrode, the first through third sub-pixel electrodes being adjacent to one another, a second substrate facing the first substrate, a first wavelength conversion layer disposed on a surface of the second substrate facing the first substrate, and overlapping the first sub-pixel electrode, a second wavelength conversion layer disposed on the surface of the second substrate facing the first substrate, and overlapping the second sub-pixel electrode, a transmissive layer disposed on the surface of the second substrate facing the first substrate, and overlapping the third sub-pixel electrode, a first cholesteric liquid crystal layer disposed on a surface of the first wavelength conversion layer facing the first substrate, a second cholesteric liquid crystal layer disposed on a surface of the second wavelength conversion layer facinType: GrantFiled: August 18, 2017Date of Patent: November 5, 2019Assignee: Samsung Display Co., LtdInventors: Ki Chul Shin, Ho Kil Oh
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Patent number: 10429703Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.Type: GrantFiled: April 11, 2018Date of Patent: October 1, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Wan Namgung, Ik Han Oh, Seung Kyu Lee, Ho Jun Lee, Ki Pyo Hong
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Patent number: 10354597Abstract: An optical device is described. The device has a sensor having a light incident side, wherein the sensor is designed to convert light that is incident upon the light incident side into an electrical signal. In one embodiment, the device further has at least one lens and a liquid crystal device which is arranged in front of the light incident side of the sensor in such a manner that the at least one lens is situated between the liquid crystal device and the sensor, wherein the liquid crystal device comprises at least one region whose light transmission is electronically controllable. There are further described an electronic device, a method of controlling an optical device, and a computer program.Type: GrantFiled: October 21, 2015Date of Patent: July 16, 2019Assignee: e.solutions GmbHInventors: Stefan Christmann, Thomas Franke
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Patent number: 10256253Abstract: The present disclosure discloses that an array substrate, including a base substrate having a circular or oval horizontal section, wherein the base substrate comprises a display region and a non-display region, wherein a plurality of first signal lines, a plurality of second signal lines crossing the plurality of first signal lines, a plurality of thin film transistors and a plurality of pixel electrodes are arranged in the display region, and the plurality of thin film transistors and the plurality of pixel electrodes are arranged in a plurality of pixel regions defined by the plurality of first signal lines and the plurality of second signal lines, wherein a connection wire connected to the plurality of first signal lines and the plurality of second signal lines is arranged in the non-display region.Type: GrantFiled: February 15, 2016Date of Patent: April 9, 2019Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Wenbo Li
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Patent number: 10254453Abstract: Exemplary thin-film optical devices have first and second layer groups disposed as a layer stack on a substrate. The first layer group comprises a first PPN layer, a first LCP layer, and a first barrier layer all superposed. The second layer group is superposed relative to the first layer group, and includes a second PPN layer, a second LCP layer, and a second barrier layer all superposed. The first and second layer groups cooperate to polarize multiple wavelengths of an incident light flux in a broadband and/or wide-angle manner. Each of the layer groups has an alignment layer, a respective liquid-crystal polymer layer, and a barrier layer.Type: GrantFiled: November 27, 2015Date of Patent: April 9, 2019Assignee: Arizona Board of Regents on Behalf of the University of ArizonaInventors: Stanley Pau, Wei-Liang Hsu
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Patent number: 10241241Abstract: A light controlling film comprises a light reflecting film and a light controlling layer that are laminated. The light reflecting film comprises at least two laminated light reflecting layers including at least one of light reflecting layers PRL-1 to PRL-3 that a central reflection wavelength of 400 nm-500 nm, 500 nm-600 nm, and 600 nm-700 nm, respectively, and a reflectance to ordinary light at the central reflection wavelength of 5%-25%. The at least two light reflecting layers have central reflection wavelengths that are different from each other. All of the at least two laminated light reflecting layers have a property of reflecting polarized light having the same orientation. The light controlling layer comprises two quarter wave plates, and the light reflecting film is laminated so as to be interposed between the two quarter wave plates.Type: GrantFiled: October 8, 2015Date of Patent: March 26, 2019Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Kouichi Tanaka, Chihiro Takahashi, Yui Yokoyama, Tomoyuki Hayasaki
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Patent number: 10203555Abstract: There are provided a phase difference control component, which can realize a liquid crystal display device having a wide angle of visibility, has excellent phase difference symmetry and can realize optical compensation, and a process for producing the same. The phase difference control component comprises a base material; and a phase difference control layer formed of a fixed liquid crystal material provided on the base material through an aligning film and is characterized in that the angle of liquid crystal molecules, present at the interface of the aligning film and the phase difference control layer, to the base material being substantially 0 (zero) degree.Type: GrantFiled: April 7, 2016Date of Patent: February 12, 2019Assignee: Dai Nippon Printing Co., Ltd.Inventors: Norihisa Moriya, Kanami Ikegami
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Patent number: 10151864Abstract: An optical film having a positive C-plate sandwiched by circular polarization reflection layers with different center wavelength of reflection band, wherein the circular polarization reflection layer closest to a light exit side of the optical film does not have the shortest center wavelength of reflection band among the circular polarization reflection layers, can suppress an oblique tint change when the optical film is incorporated into a liquid crystal display device.Type: GrantFiled: February 15, 2017Date of Patent: December 11, 2018Assignee: FUJIFILM CorporationInventor: Kotaro Yasuda
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Patent number: 10132974Abstract: The present invention provides a circularly polarizing plate that improves the visibility of black color in an oblique direction when being applied to a display device and having a small thickness, the display device including a circularly polarizing plate. The circularly polarizing plate is a circularly polarizing plate including, in this order, a polarizer, a ?/2 plate, and a ?/4 plate, in which the ?/2 plate is a laminate of a first A-plate and a first C-plate, the ?/4 plate is a laminate of a second A-plate and a second C-plate, one of the first C-plate and the second C-plate is a cellulose acylate film having a predetermined Rth, and the other of the first C-plate and the second C-plate is an optically anisotropic layer including a liquid crystal compound having a predetermined Rth or a cellulose acylate film having a predetermined Rth.Type: GrantFiled: March 22, 2017Date of Patent: November 20, 2018Assignee: FUJIFILM CorporationInventors: Yusuke Furuki, Naoyoshi Yamada, Masakane Muto
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Patent number: 10120200Abstract: A display apparatus includes: a backlight assembly configured to emit light; and a display panel configured to display a two-dimensional (2D) image or a three-dimensional (3D) image using the light, wherein the backlight assembly includes: a first backlight unit configured to emit light for creating the 2D image; a second backlight unit configured to emit light for creating the 3D image; and a first polarizing panel disposed between the first backlight unit and the second backlight unit, and configured to prevent at least a portion of leakage light leaking from the second backlight unit from being incident to the second backlight unit.Type: GrantFiled: June 3, 2016Date of Patent: November 6, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae Kuen Yang, Keun-Bae Jeon, Sang Hyun Sohn
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Patent number: 10073198Abstract: A display device is provided. The display device includes a display module and a cover lens. The display module has a display area and a non-display area aside the display area. The cover lens which is disposed on the display module and covers the same includes a convex lens portion and a cover portion, wherein the convex lens portion has a convex cover surface facing the display area, the cover portion is connected to a side of the convex lens portion opposite to convex cover surface; the cover portion also has a fringe extending outsides the convex lens portion. The cover portion has an outer surface which includes a central area and a cambered surface connected to the central area and corresponding to the fringe.Type: GrantFiled: August 31, 2016Date of Patent: September 11, 2018Assignee: AU OPTRONICS CORPORATIONInventor: Tzu-Ling Niu
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Patent number: 9946124Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.Type: GrantFiled: March 2, 2016Date of Patent: April 17, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Wan Namgung, Ik Han Oh, Seung Kyu Lee, Ho Jun Lee, Ki Pyo Hong
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Patent number: 9910197Abstract: The present invention provides an optical member including a reflection layer and an information presentation layer, the reflection layer comprising one or more circularly-polarized light reflection layers selected from the group consisting of a right circularly-polarized light reflection layer and a left circularly-polarized light reflection layer, the circularly-polarized light reflection layer consisting of a layer obtained by fixing a cholesteric liquid-crystalline phase, the reflection layer having a reflection wavelength at which a specular reflectance for non-polarized light is more than 20% in a wavelength region in which the circularly-polarized light reflection layer exhibits selective reflection, a diffuse reflectance for non-polarized light at the reflection wavelength less than 50%, the reflection wavelength being in an infrared wavelength region, and the information presentation layer having a pattern of a material that absorbs or reflects light of the reflection wavelength.Type: GrantFiled: June 17, 2015Date of Patent: March 6, 2018Assignee: FUJIFILM CorporationInventors: Kazuhiro Oki, Mitsuyoshi Ichihashi, Wataru Majima
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Patent number: 9817262Abstract: The problem is to provide a front plate of a TN liquid crystal panel capable of inhibiting occurrence of color unevenness caused by retardation of a polycarbonate resin sheet, even when a liquid crystal panel is observed through polarizing glasses or liquid crystal shutter glasses for 3D, while having excellent impact resistance, heat resistance and transparency. The solution means is the front plate 1 of a TN liquid crystal panel provided with the polycarbonate resin sheet 10, wherein the direction of the slow axis X or the fast axis Y of the polycarbonate resin sheet 10 is inclined by 45° with respect to the lengthwise direction L of a liquid crystal panel.Type: GrantFiled: August 8, 2011Date of Patent: November 14, 2017Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Koshi Koide, Osamu Kakinoki
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Patent number: 9793444Abstract: One object of the invention is to provide a display device that can display an image which causes a viewer less strain associated with viewing and gives a viewer a sense of great depth and an electronic device for enjoying the image. The present inventors have focused on a sense of depth obtained by monocular viewing and have conceived a display device in which pixels each include a light-emitting module capable of emitting light having a spectral line half-width of less than or equal to 60 nm in a response time of less than or equal to 100 ?s and are provided at a resolution of higher than or equal to 80 ppi; the NTSC ratio is higher than or equal to 80%; and the contrast ratio is higher than or equal to 500.Type: GrantFiled: March 15, 2013Date of Patent: October 17, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yoshiharu Hirakata
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Patent number: 9709831Abstract: An electronic window is disclosed. The electronic window comprises: base substrate, first polarizing device, and second polarizing device disposed on the same side or on different sides of the base substrate; in an OFF state, first polarizing device configured to convert an incident light into a first polarized light and emitting the first polarized light, a polarization direction of the first polarized light is perpendicular to a polarization direction of the second polarizing device, and the second polarizing device configured to prevent the first polarized light from emitting; and in an ON state, first polarizing device configured to transmit the incident light, the second polarizing device configured to transmit the incident light or to convert the incident light into a third polarized light and emit the third polarized light, a polarization direction of the third polarized light is the same as a polarization direction of the second polarizing device.Type: GrantFiled: October 24, 2014Date of Patent: July 18, 2017Assignee: BOE Technology Group Co., Ltd.Inventor: Guanghui Liu
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Patent number: 9618795Abstract: The liquid crystal panel includes a liquid crystal cell, a first polarizer on one side of the liquid crystal cell, a second polarizer on the other side of the liquid crystal cell, a first optically anisotropic element disposed between the liquid crystal cell and the first polarizer, and a second optically anisotropic element disposed between the first optically anisotropic element and the liquid crystal cell. Absorption axes of the first and the second polarizers are perpendicular to each other. The first optically anisotropic element has a slow axis direction parallel to the absorption axis direction of the first polarizer. The second optically anisotropic element has a slow axis direction perpendicular to the absorption axis direction of the first polarizer. The first and the second optically anisotropic elements each have in-plane and thickness-direction retardation values within specific ranges, respectively.Type: GrantFiled: March 14, 2016Date of Patent: April 11, 2017Assignee: NITTO DENKO CORPORATIONInventors: Toshiyuki Iida, Nao Murakami
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Patent number: 9552777Abstract: This document describes techniques and apparatuses for implementing a phase control backlight. A phase control backlight is configured to concentrate light to each pupil of a viewer of a display to cause images to be displayed to each pupil of the viewer. The phase control backlight can include an illuminator and a light guide that includes a diffraction grating. The light guide is configured to receive light rays from the illuminator, and to diffract light rays out of the light guide via the diffraction grating. In accordance with various embodiments, the light guide can be controlled to alter a phase of the light rays as the light rays are guided within the light guide to cause the diffracted light rays to converge to a concentration point that corresponds to a position in space of each pupil of the viewer.Type: GrantFiled: May 10, 2013Date of Patent: January 24, 2017Assignee: Microsoft Technology Licensing, LLCInventor: Adrian R. L. Travis
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Patent number: 9423543Abstract: A display device includes a display panel, a first pressure sensitive adhesive positioned on the display panel, a quarter wavelength (?/4) wave plate positioned on the pressure sensitive adhesive, a linear polarizer positioned on the ?/4 wave plate, and a first base layer positioned on the linear polarizer.Type: GrantFiled: November 21, 2013Date of Patent: August 23, 2016Assignee: LG Display Co., Ltd.Inventor: Wonjong Cho
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Patent number: 9394465Abstract: Provided is a novel transparent adhesive sheet with which the cut edge is not sticky over time when a laminated body that has been bonded via the adhesive sheet is cut, which can be adhered without generating residual air bubbles, even when the surface of an adherend is uneven, and which can be adhered without foaming, even when the adherend is a material such as plastic that can generate outgas. Suggested is an adhesive sheet that has one or more layers of a first adhesive layer and one or more layer of a second adhesive layer that exhibit different viscoelastic behaviors, and has an integrated structure whereby these layers are laminated, with a dynamic shear storage modulus G? of 2×104 to 5×105 Pa for G?(20° C.) and 1×104 to 1×105 Pa for G?(150° C.) when measured with a 1 Hz frequency temperature dispersion.Type: GrantFiled: October 21, 2013Date of Patent: July 19, 2016Assignee: MITSUBISHI PLASTICS, INC.Inventor: Makoto Inenaga