Compensator Or Retarder (i.e., Not Using Liquid Crystal Cell) Patents (Class 349/117)
  • Patent number: 10895777
    Abstract: A display device and a method for adjusting a chromaticity of a display beam are provided. A display device includes a light source module, a viewing angle switching module and a display module. The light source module includes a light source used for providing a light beam, and an illumination beam is formed by the light beam through the light source module, wherein the chromaticity of the light beam falls within a first region in the CIE 1931 xy chromaticity coordinates. The first region is a region enclosed by four coordinate points, and values of the four coordinate points of the first region are (0.2535, 0.2160), (0.2656, 0.2590), (0.2795, 0.2590), and (0.2674, 0.2160), respectively. The viewing angle switching module and the display module are located on the transmission path of the illumination beam.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: January 19, 2021
    Assignee: Coretronic Corporation
    Inventors: Yang-Ching Lin, Chung-Yang Fang, Ping-Yen Chen
  • Patent number: 10884287
    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 ?? 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 i
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: January 5, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takuya Ootani, Kiyoshi Minoura, Takashi Satoh
  • Patent number: 10884171
    Abstract: A beam deflector and a holographic three-dimensional image display apparatus employing the same are provided. The beam deflector deflects light through two stages by a first beam deflector that deflects the light in a first moving direction making an angle with a horizontal direction and a vertical direction, such that the deflected light is oriented to a first location, and a second beam deflector that deflects the light incident from the first beam deflector such that the light is deflected in a second moving direction making an angle with the horizontal direction and the vertical direction at the first location and is oriented to a second location.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: January 5, 2021
    Assignee: SAMSUNG ELECTRONICS CO.. LTD.
    Inventors: Young Kim, Jungkwuen An, Hoon Song, Kanghee Won
  • Patent number: 10884288
    Abstract: The present invention relates to a polarizing article that includes in order: (a) a substrate; (b) a first orientation facility having a first orientation direction; (c) a first polarized layer, that includes a first dichroic fixed-tint dye and a first liquid-crystal material, and which has a first polarization axis; (d) a second orientation facility having a second orientation direction; and (e) a second polarized layer that includes a second dichroic fixed-tint dye and a second liquid-crystal material, and which has a second polarization axis. The first and second polarization axes are oriented relative to each other at an angle of greater than 0° and less than or equal to 90°. The electromagnetic absorption spectra of the first and second dichroic fixed-tint dyes are different from each other.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: January 5, 2021
    Assignee: Transitions Optical, Ltd.
    Inventors: Meng He, Delwin S. Jackson, Anil Kumar
  • Patent number: 10877197
    Abstract: This liquid crystal display unit includes a pair of polarizers, a liquid crystal display device provided between the pair of polarizers, and an optical compensation device provided between, of the pair of polarizers, at least one polarizer and the liquid crystal display device. The optical compensation device includes an underlayer including a plurality of structures that each include first and second surfaces having different inclination angles from each other, and a multilayered film formed on the underlayer and including a plurality of first and second refractive index films that are alternately stacked one on top of another repeatedly. An array pitch of the plurality of structures in the underlayer is smaller than a wavelength of visible light.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: December 29, 2020
    Assignee: SONY CORPORATION
    Inventor: Tsuyoshi Okazaki
  • Patent number: 10823892
    Abstract: The present application relates to a device for testing optical properties and a method for testing optical properties using the same. The device of the present application has inexpensive manufacturing and maintenance costs, is capable of testing a wide range of plane directional phase differences, and provides the method for testing optical properties with improved identification efficiency of the phase retardation axis.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: November 3, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Min Yeong Jo, Jin Yong Park, Dong Min Park, Won Chul Lee, Ki Jun Jung
  • Patent number: 10824020
    Abstract: A polarization independent optical phase modulator includes two substrates, two electrode layers, two alignment layers, and a liquid crystal layer. Each of alignment layers has first and second alignment regions each having a predetermined width in a transverse direction, which is not greater than a half of the wavelength of an incident light. In the liquid crystal layer, two adjacent ones of liquid crystal elements in the transverse direction are aligned respectively by two adjacent ones of the first and second alignment regions in two predetermined orientations which are orthogonal to each other, thereby permitting phase modulation of the incident light to be independent of the polarization of the incident light.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: November 3, 2020
    Assignee: National Chiao Tung University
    Inventors: Yi-Hsin Lin, Hung-Chun Lin
  • Patent number: 10816848
    Abstract: A method for manufacturing a polarizing plate having excellent appearance properties and including a polarizer, an optical rotatory layer, and a brightness enhancement film, a polarizing plate, and a liquid crystal display device including the polarizing plate, are described. The method includes forming an optical rotatory layer, which has a film thickness of 1 to 10 ?m and rotates a polarization axis of linearly polarized light, on a temporary support to manufacture a temporary support with an optical rotatory layer; bonding the optical rotatory layer of the temporary support with an optical rotatory layer and polarizer through a curable adhesive layer, and curing the curable adhesive layer to form a first bonding layer having a storage elastic modulus of 2 to 1500 MPa; peeling off the temporary support from the laminate; and bonding the optical rotatory layer of the laminate and a brightness enhancement film through a second bonding layer.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 27, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Fumitake Mitobe, Jun Takeda, Yasukazu Kuwayama, Yuya Hamaguchi
  • Patent number: 10808904
    Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: October 20, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshihisa Iwamoto
  • Patent number: 10809529
    Abstract: An optical device comprises a pixel array including one or more pixels. Two or more independently controllable electrodes are electrically coupled to each pixel. A common ground reference electrode is electrically coupled to all pixels of the pixel array. Each pixel includes a plurality of liquid crystal molecules. The liquid crystal molecules may be oriented in a first direction based on a first function of voltages applied by the two or more independently controllable electrodes for the pixel, and oriented in a second direction based on a second function of the voltages applied by the two or more independently controllable electrodes for the pixel. In this way, both phase modulation and polarization modulation may be introduced to light illuminating the pixel array.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: October 20, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Steven John Robbins, Joel Steven Kollin, Andreas Georgiou, Adrian Robert Leigh Travis
  • Patent number: 10800202
    Abstract: The present invention relates to a production method and to a device for document security applications including various latent images on each side. The invention comprises: depositing, according to an established pattern, at least one layer of metallized material, forming a holographic element on at least one part of one of the surfaces of a confinement substrate; defining different regions on the surface of the substrate; inducing different alignment directions for orienting a liquid crystal according to the previously defined regions; doping the liquid crystal with at least one dichroic dye; placing the liquid crystal over at least one confinement substrate, covering the holographic element; adding a second confinement substrate, forming a sandwich-type structure; and polymerizing the liquid crystal, forming a sheet.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: October 13, 2020
    Assignees: UNIVERSIDAD POLITECNICA DE MADRID, ALISE DEVICES, S.L.
    Inventors: Patxi Xabier Quintana Arregui, Morten Andreas Geday, José Manuel Otón Sánchez, Beatriz Cerrolaza Martinez, Carlos Carrasco Vela
  • Patent number: 10795210
    Abstract: A liquid crystal panel includes substrates, a liquid crystal layer between the substrates, a spacer provided on an opposite surface of one of the substrates, and an alignment film provided on an opposite surface of another substrate. The display surface is curved around a curved axis or formed to be bendable around the curved axis, and the spacer directly or indirectly abuts on the alignment film provided on the opposite surface of the other substrate. The alignment film is a horizontal alignment film that contains a polymer having an alkylene chain structure having two or more carbon atoms in a main chain and allows liquid crystal molecules in the liquid crystal layer to be aligned horizontally to the alignment film, and in the alignment film provided on the opposite surface of the other substrate, the polymer is aligned such that the alkylene chain structure extends parallel to the curved axis.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: October 6, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Hiroaki Asagi
  • Patent number: 10783808
    Abstract: A flexible display device includes a display panel configured to display an image, and a polarizing plate on the display panel. The flexible display device includes a folding area and a non-folding area. A first thickness of the polarizing plate in the folding area is greater than a second thickness of the polarizing plate in the non-folding area.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: September 22, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Won-Jong Cho, Won-Ki Park
  • Patent number: 10782582
    Abstract: Example display devices include a waveguide configured to propagate visible light under total internal reflection in a direction parallel to a major surface of the waveguide. The waveguide has formed thereon an outcoupling element configured to outcouple a portion of the visible light in a direction normal to the major surface of the waveguide. The example display devices additionally include a polarization-selective notch reflector disposed on a first side of the waveguide and configured to reflect visible light having a first polarization while transmitting the portion of the visible light having a second polarization. The example display devices further include a polarization-independent notch reflector disposed on a second side of the waveguide and configured to reflect visible light having the first polarization and the second polarization, where the polarization-independent notch reflector is configured to convert a polarization of visible light reflecting therefrom.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: September 22, 2020
    Assignee: Magic Leap, Inc.
    Inventor: Chulwoo Oh
  • Patent number: 10768430
    Abstract: A display device includes a display panel having a display surface and a lighting device that supplies light to the display panel. The lighting device includes a light source, and an optical member having at least a light exit surface through which the light emitted by the light source exits toward the display surface of the display panel. The optical member includes a light refraction portion that imparts an anisotropic refraction effect to at least light rays exiting through an edge section of the light exit surface to be oriented toward a center side of the display surface. The display device further includes a low refraction index layer interposed between the display panel and the optical member, and the low refraction index layer has a refraction index lower than at least a refraction index of the optical member.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: September 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuuichi Kanbayashi, Naru Usukura, Hiromi Katoh
  • Patent number: 10747057
    Abstract: A display device includes an image display panel, and a viewing angle switching element, in which the viewing angle switching element includes first and second linear polarizers arranged to face each other, and a viewing angle control cell and an optical compensation sheet arranged in a laminated manner between the first and second linear polarizers, the viewing angle control cell includes a single domain vertical alignment liquid crystal cell, an angle formed between an in-plane fast axis of the optical compensation sheet and the absorption axis or the reflection axis of the first linear polarizer is 30° to 60°, and a pretilt azimuth of the vertically aligned liquid crystal of the viewing angle control cell is at an angle of 30° to 60° from the absorption axis or the reflection axis of the first linear polarizer.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: August 18, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Naoyoshi Yamada
  • Patent number: 10668790
    Abstract: An interlayer comprising a first polymer layer, a polarization rotary optical film and optionally a second polymer layer, and multiple layer panels formed from such interlayers. The panels may exhibit desirable optical properties, including, for example, less image “ghosting,” when used as part of a heads-up-display (HUD) display panel for use in automotive and aircraft applications.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: June 2, 2020
    Assignee: Solutia Inc.
    Inventors: Wenjie Chen, Peter Borden Mackenzie, Scott Evan Pickett, Kimberley Carmenia Carico, Roland Claus Thielsch
  • Patent number: 10663777
    Abstract: A viewing angle switchable display module includes an organic light-emitting display (OLED) panel, a viewing angle switchable device disposed on the OLED panel, and a quarter wave plate disposed between the OLED panel and the viewing angle switchable device. The viewing angle switchable device includes an absorptive polarizer, a reflective polarizer, and an electrically controlled viewing angle switching element. A transmission axis of the reflective polarizer is parallel to a transmission axis of the absorptive polarizer. The electrically controlled viewing angle switching element is disposed between the absorptive polarizer and the reflective polarizer and includes two conductive layers and a liquid crystal layer including liquid crystal molecules.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: May 26, 2020
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Yang-Ching Lin, Jen-Wei Yu
  • Patent number: 10656314
    Abstract: Provided is a shaped article having excellent jet blackness and also, by transmitting light with specific wavelength, can display a specific color. The shaped article is a shaped article for which the L* value of reflected light is 35 or less and the total light transmittance is 1% or less, wherein, in a wavelength range of 380 nm or more to 780 nm or less, the wavelength at which the maximum value of light transmittance is exhibited is in a range of 380 nm or more to less than 680 nm, and the expressions T??0.1% and 0%?T??T?/2 are satisfied, or, in a wavelength range of 380 nm or more to 780 nm or less, the wavelength at which the maximum value of light transmittance is exhibited is in a range of 680 nm or more to 780 nm or less, and the expressions T??10% and 0%?T??T?/2 are satisfied.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: May 19, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tadayoshi Sawada, Yoshiaki Murayama
  • Patent number: 10656462
    Abstract: A liquid crystal display includes a light source and a liquid crystal panel, wherein the liquid crystal panel includes a first substrate on the light source, a second substrate facing the first substrate, a liquid crystal layer between the first substrate and the second substrate, a color conversion layer between the second substrate and the liquid crystal layer, and including a light emitting element configured to receive a first visible light from the light source and emit a second visible light, a first polarizing layer between the liquid crystal layer and the color conversion layer, and a first phase difference layer between the liquid crystal layer and the first polarizing layer.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: May 19, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Beom Seok Kim, Hyunseok Choi, Ju Hyun Kim, Masashi Tsuji, Sangah Gam, Joungeun Yoo
  • Patent number: 10656309
    Abstract: A wire grid polarizer (WGP) can be durable and have high performance. The WGP can comprise an array of wires 13 on a substrate 11. An overcoat layer 32 can be located at distal ends of the array of wires 13 and can span channels 15 between the wires 13. A conformal-coat layer 61 can coat sides 13s and distal ends 13d of the wires 13 between the wires 13 and the overcoat layer 32. The overcoat layer can comprise aluminum oxide. An antireflection layer 33 can be located over the overcoat layer 32.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 19, 2020
    Assignee: Moxtek, Inc.
    Inventors: R. Stewart Nielson, Bradley R. Williams, Mathew Free, Ted Wangensteen
  • Patent number: 10642145
    Abstract: Provided are a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The transparent screen includes, in this order: a first ?/4 plate; a reflecting layer that has a structure obtained by immobilizing a cholesteric liquid crystalline phase and reflects a part of incidence light; and a polarizing film that has an absorption axis in a thickness direction.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: May 5, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Yujiro Yanai, Michio Nagai, Akira Yamamoto
  • Patent number: 10641937
    Abstract: An exemplary embodiment of the present invention provides a polarizer including a first retardation layer and a second retardation layer having different retardation values with respect to each other, a polarization layer disposed on the first retardation layer, a first compensation layer disposed between the first retardation layer and the second retardation layer, and a second compensation layer disposed below the second retardation layer.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: May 5, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee Young Lee, Sung June Park, In Seo Kee, Jin Kyu Kim
  • Patent number: 10627670
    Abstract: A privacy display comprises a polarised output spatial light modulator, reflective polariser, plural polar control retarders and a polariser. 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. Further, display reflectivity is reduced for on-axis reflections of ambient light, while reflectivity is increased for off-axis light. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction and increased frontal reflectivity to ambient light. In a public mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: April 21, 2020
    Assignee: RealD Spark, LLC
    Inventors: Michael G. Robinson, Graham J. Woodgate, Jonathan Harrold, Robert A. Ramsey
  • Patent number: 10620354
    Abstract: A phase difference film including: a phase difference thin film including at least two non-liquid crystal polymers, wherein the phase difference thin film satisfies refractive indexes of nx?ny>nz and has a thickness direction phase difference per unit thickness of greater than or equal to about 80 nm/?m, wherein nx denotes a refractive index of the phase difference thin film at a slow axis thereof, ny denotes a refractive index of the phase difference thin film at a fast axis thereof, and nz denotes a refractive index of the phase difference thin film in a direction perpendicular to the slow axis and the fast axis thereof, and wherein an average light transmittance in a wavelength region of about 360 nm to about 740 nm is greater than or equal to about 88%, and a display device including the same.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: April 14, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD.
    Inventors: Hye Young Kong, Hyunseok Choi, Sangah Gam
  • Patent number: 10621926
    Abstract: The disclosure relates to a liquid crystal display device. The liquid crystal display device includes a drive component, connected to the display component and configured to display each picture with two frame images in sequence; the two frame images include a first frame image and a second frame image; drive voltages of adjacent two sub-pixels on each frame image include a high drive voltage and a low drive voltage, and the drive voltages of each sub-pixel in the first frame image and in the second frame image include a high drive voltage and a low drive voltage; and a backlight control component, connected to the drive component; wherein the backlight control component is configured to determine a backlight brightness adjusting signal of each backlight subarea according to the drive voltages of a first frame image region and a second frame image region corresponding to each backlight subarea.
    Type: Grant
    Filed: December 16, 2017
    Date of Patent: April 14, 2020
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 10620502
    Abstract: A liquid crystal lens, a method of controlling a liquid crystal lens and liquid crystal glasses are provided. The liquid crystal lens includes a liquid crystal layer; and an electrode structure. The electrode structure includes: a first sector region; a second sector region; at least two first annular sector electrodes in the first sector region; and at least two second annular sector electrodes in the second sector region. The electrode structure is configured to: in response to voltages applied to the at least two first annular sector electrodes, configure the liquid crystal molecules as a first Fresnel element; and in response to voltages applied to the at least two second annular sector electrodes, configure the liquid crystal molecules as a second Fresnel element, the second Fresnel element being different from the first Fresnel element.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: April 14, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: ChenYu Chen, Weili Zhao
  • Patent number: 10606148
    Abstract: An optical low-pass filter includes a stack of N (N?3) optical anisotropic layers each configured to separate an incident ray into a plurality of rays, wherein the following condition is satisfied: Ds?0.50 Da, where Da [?m] is a total value of ray separation widths of the first to (N?1)th optical anisotropic layers among the N optical anisotropic layers, and Ds [?m] is a distance between a ray having a maximum phase difference and a ray having a minimum phase difference among the rays separated by the first to (N?1)th optical anisotropic layers.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 31, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yutaka Yamaguchi
  • Patent number: 10585312
    Abstract: A laminate is capable of forming an orientation film formed by orienting a rod-like liquid crystal compound or a disk-like liquid crystal compound having a horizontal orientation ability or a vertical orientation ability with respect to a surface of the laminate, on the surface, by using an orientation restraining force of the surface, the laminate including: a cholesteric liquid crystal layer. An optical film sequentially includes: a support; a cholesteric liquid crystal layer; and an orientation film.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 10, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Nobuyuki Akutagawa, Jun Takeda, Akio Tamura
  • Patent number: 10585224
    Abstract: There is provided a polarizing plate excellent in durability. A polarizing plate 100 according to one embodiment of the present invention includes a polarizer 10; and a pair of protective films 21, 22 respectively arranged on both main surfaces of the polarizer 10, wherein the polarizing plate 100 has a polarizer void portion 30 formed by positioning of an end surface 10a of the polarizer 10 inward in a plane direction relative to each of end surfaces 21a, 22a of the protective films 21, 22.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: March 10, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
  • Patent number: 10578774
    Abstract: Provided are: a retardation-increasing agent that has excellent compatibility and, when incorporated into a resin film, is capable of not only adjusting the thickness-direction phase difference toward a positive direction but also imparting the film with high retardation; a cellulose-based resin composition comprising the retardation-increasing agent; and a film that is obtained from the cellulose-based resin composition and has excellent optical properties. The retardation-increasing agent comprises a compound represented by the following Formula (1) or (2): (wherein, R1 to R10 each independently represent a hydrogen atom or the like); or (wherein, R21 to R28 each independently represent a hydrogen atom or the like).
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 3, 2020
    Assignee: ADEKA CORPORATION
    Inventors: Yuki Tanaka, Takashi Murakami, Masaki Segawa, Koichiro Abe
  • Patent number: 10564477
    Abstract: An object is to provide a phase difference compensation element capable of improving the contrast of a liquid crystal display device while solving the problems of a high cost, an increase in the lead time, an increase in the mounting space, and the durability. A phase difference compensation element includes: a phase difference imparting and reflection preventing layer; a first birefringence layer and a second birefringence layer in which an angle of a corner formed by a main axis of refractive index anisotropy and a surface of a transparent substrate is not 90 degrees; a third birefringence layer in which an angle of a corner formed by a main axis of refractive index anisotropy and the surface of the transparent substrate is 0 degrees, wherein, when segments acquired when the main axes of the first, second, and third birefringence layers are projected onto the transparent substrate are respectively denoted by a segment A, a segment B, and a segment C, relations of the following (1) and (2) are satisfied.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: February 18, 2020
    Assignee: Dexerials Corporation
    Inventors: Nobuyuki Koike, Akio Takada
  • Patent number: 10564339
    Abstract: A phase difference film and a circularly polarizing film each achieve suppressed coloration when viewed from the front direction, a smaller difference in tint between views from the front direction and the oblique direction, and suppressed image unevenness, where the film is applied to an image display panel, in particular, an organic EL panel; as well as an image display device including the circularly polarizing film. The phase difference film includes optically anisotropic layers A and B, in which a retardation RthA of layer A in the thickness direction at a wavelength of 550 nm is larger than 0, layer A exhibits predetermined optical properties, a retardation RthB of layer B in the thickness direction at a wavelength of 550 nm is smaller than 0, layer B satisfies predetermined optical properties, and the angle formed between a slow axis of the optically anisotropic layers A and B is 90°±10°.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 18, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Yuta Takahashi
  • Patent number: 10564469
    Abstract: A display cell structure is provided. A first substrate and a second substrate are spaced apart from each other, and a wire grid polarizer layer is disposed therebetween, forming a first cell gap between the first substrate and the wire grid polarizer layer and a second cell gap between the second substrate and the wire grid polarizer layer. A first display structure is disposed in the first cell gap, and includes multiple first pixel electrodes and a polymer liquid crystal layer. A polarizer layer is disposed on the second substrate and facing an opposite side to the wire grid polarizer layer. A second display structure is disposed in the second cell gap, and includes multiple second pixel electrodes and a liquid crystal layer.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: February 18, 2020
    Assignee: A.U. VISTA, INC.
    Inventors: Fang-Chen Luo, Seok-Lyul Lee
  • Patent number: 10564476
    Abstract: A liquid crystal display panel is provided. The liquid crystal display panel comprises: a first substrate (110) and a second substrate (120) which are oppositely arranged, and a liquid crystal layer (130) arranged between the first substrate (110) and the second substrate (120); an alignment film (300) arranged on an inner side of the first substrate (110); and a compensation film (400) arranged on an inner side or an outer side of the second substrate (120). The inner side of the first substrate (110) and the inner side of the second substrate (120) are sides facing each other, and the outer side of the second substrate (120) is a side provided away from the inner side of the second substrate (120).
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: February 18, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yafeng Yang, Xin Li
  • Patent number: 10565319
    Abstract: A translation device with two-way projection and voice functions includes: an upper shell, a main shell and a lower shell, wherein the upper shell includes a shell bracket and a cover plate; two projection light machines, a plurality of microphones, an upper control board, a fan and a heat dissipation module are installed in the shell bracket, structural hole positions of projection light machines are formed in two symmetrical sides at the outside of the shell bracket, and the images projected by the two projection light machines can be projected through the structural hole positions of projection light machines; a plurality of microphone speaking holes are further formed at the outside the shell bracket; the fan and the heat dissipation module are further installed in the shell bracket; the cover plate is formed by a combination of a display device and a touch device.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: February 18, 2020
    Inventor: Hui Zhao
  • Patent number: 10564337
    Abstract: The present application relates to an optical film and a use of the optical film, and can provide an optical film exhibiting selective transmission and blocking characteristics according to viewing angles, and such an optical film can be usefully used as a security film for a display device such as LCD, a smart window, sunglasses and the like.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: February 18, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sin Young Kim, Sergey Belyaev, Ji Youn Lee, Moon Soo Park
  • Patent number: 10551675
    Abstract: The present disclosure provides a display substrate, a liquid crystal display panel and a display device. The display substrate includes a base substrate, and an optical compensation structure attached to the base substrate. The optical compensation structure is capable of expanding viewing angle ranges of the display substrate in different directions.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: February 4, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Qian Jia
  • Patent number: 10534238
    Abstract: An object of the present invention is to provide a transmission decorative film having transparency and capable of applying different visual effects on observation surfaces. The transmission decorative film includes: a linear polarization plate; a first ?/4 plate laminated on one main surface of the linear polarization plate; a first cholesteric liquid crystalline layer laminated on the first ?/4 plate; a second ?/4 plate laminated on the other main surface of the linear polarization plate; and a second cholesteric liquid crystalline layer laminated on the second ?/4 plate, in which the first cholesteric liquid crystalline layer and the second cholesteric liquid crystalline layer respectively have wavelength selective reflectivity and reflect light which is right circularly polarized light or left circularly polarized light at a selective reflection wavelength.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: January 14, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Inada, Shigeaki Nimura, Mitsuyoshi Ichihashi, Rie Takasago
  • Patent number: 10527766
    Abstract: To suppress a phenomenon where an optical axis of the optically anisotropic layer is tilted when the optically anisotropic layer is produced by using a liquid crystalline compound showing smectic phase as a materials showing a higher level of orderliness. An optically anisotropic layer wherein a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase, and a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of the optically anisotropic layer, a method for manufacturing the same, a laminate and a method for manufacturing the same, a polarizing plate, a liquid crystal display device, and an organic EL display device.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: January 7, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Ayako Muramatsu, Shinnosuke Sakai, Teruki Niori, Shinichi Morishima
  • Patent number: 10513596
    Abstract: Anti-fog compositions comprising a primary film having opposing major planar surfaces and a central coplanar region disposed between the opposing major planar surfaces and comprising cellulose acetate and a plasticizer. The cellulose acetate may have a degree of substitution less than 2.6. The plasticizer may be selected from the group consisting of 1,2,3-triacetoxypropane (triacetin), tributyl citrate, triethyl citrate, triphenyl phosphate, tris(clorisopropyl)phosphate, dimethyl phthalate, diethyl phthalate, bornan-2-one, PEG-DGE, PPG-DGE, tributyl phosphate, and combinations thereof. The primary film has a thickness greater than 90 microns.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: December 24, 2019
    Assignee: CELANESE ACETATE LLC
    Inventors: Kevin Parker, Jo Marshall
  • Patent number: 10501017
    Abstract: A vehicle mirror with an image display function includes a half mirror which includes a high-Re retardation film and a reflection layer and an image display device on the half mirror, in which the high-Re retardation film, the reflection layer, and the image display device are disposed in this order, the high-Re retardation film has a front phase difference of 5000 nm or greater, and the reflection layer is a linear polarization reflection layer or a circular polarization reflection layer.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: December 10, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi, Akihiro Anzai
  • Patent number: 10503003
    Abstract: A polarizer and a method for producing the same, a display panel and a display apparatus are provided. It belongs to the technical field of display. The polarizer includes: an alignment layer; and a plurality of alignment members formed in the groove of the alignment layer, wherein each of the alignment members has a lengthwise direction parallel to the lengthwise direction of the groove. Under a certain external electrical field, the alignment members may exhibit deformation in large size, movement in a certain direction and rotation by themselves, so as to modulate the polarization orientation of the light.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: December 10, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiuxia Yang, Feng Bai
  • Patent number: 10499501
    Abstract: A cover window is provided and includes a substrate and a coating layer. The substrate has a thickness of 60 to 120 ?m. The substrate has a Re of 6000 to 12000. The coating layer is coated on the substrate. The cover window has a first direction and a second direction. The first direction is a machine direction of the cover window. The second direction is perpendicular to the first direction. A tensile stress of 50 to 130 MPa is exerted in the first direction. A tensile stress of 140 to 300 MPa is exerted in the second direction. Since the substrate has a Re of 6000 to 12000, a penetrating ray of an incident ray is uniformly distributed on a visible region of the cover window, so as to reduce the phase difference between reflected rays, reduce rainbow patterns, and enhance visibility under a polarizer.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: December 3, 2019
    Assignees: INTERFACE TECHNOLOGY (CHENGDU) CO., LTD., INTERFACE OPTOELECTRONICS (SHENZHEN) CO., LTD., GENERAL INTERFACE SOLUTION LIMITED
    Inventors: Chun-Jen Chen, Nan-Tsun Kuo, Chia-Ming Hsieh, Tzu-Hsiang Lin
  • Patent number: 10495800
    Abstract: The present disclosure provides a 3D display device and a 3D display apparatus. The 3D display device includes: a display panel; and a phase retarder arranged at a display side of the display panel, the phase retarder including first phase retarding bars and second phase retarding bars arranged alternately, wherein the 3D display device further includes a light shielding layer arranged at the display side of the display panel, the light shielding layer including a plurality of light shielding bars arranged to be spaced apart from each other and wherein each of the light shielding bars is arranged at an interface between adjacent first and second phase retarding bars.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: December 3, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Chunmiao Zhou
  • Patent number: 10497899
    Abstract: The present disclosure discloses a hardening film which includes a substrate film layer and a hardening film layer on the substrate film layer, wherein a micro stereo structure layer including a plurality of micro stereo structures is disposed between the substrate film layer and the hardening film layer. A method of manufacturing the abovementioned hardening film includes: providing a substrate film layer; forming a micro stereo structure layer on the substrate film layer using a printing process or a photolithography process; and forming a hardening film layer on the micro stereo structure layer. The present disclosure also discloses a flexible AMOLED display device containing the abovementioned hardening film.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: December 3, 2019
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Jia-Shu Wu
  • Patent number: 10473981
    Abstract: A display device includes a backlight module, a liquid crystal layer, a lower polarizer, an upper polarizer, and a retardation layer. The liquid crystal layer is disposed on a lighting side of the backlight module while the lower polarizer is disposed between the liquid crystal layer and the backlight module. The upper polarizer is disposed on a side of the liquid crystal layer opposite to the lower polarizer, and the retardation layer is between the upper and lower polarizers. The retardation layer has a retardation area that may modulates the light passing through the lower polarizer and make the light passes through the upper polarizer.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: November 12, 2019
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Wang-Shuo Kao, Wen-Fang Sung, Zhi-Lu Ye, Yun Cheng
  • Patent number: 10473995
    Abstract: A liquid crystal device and the use thereof are provided. The liquid crystal device has an advantage in terms of power consumption since a normally transparent mode may be realized in a state in which an external electric field is not applied, and can exhibit an excellent light blocking characteristic when an external electric field is applied.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 12, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jin Hong Kim, Dong Hyun Oh, Sung Joon Min, Jung Sun You, Jung Woon Kim, Eun Jung Lim
  • Patent number: 10442358
    Abstract: A vehicle mirror with an image display function includes a half mirror which includes a high-Re retardation film and a reflection layer and an image display device on the half mirror, in which the high-Re retardation film, the reflection layer, and the image display device are disposed in this order, the high-Re retardation film has a front phase difference of 5000 nm or greater, and the reflection layer is a linear polarization reflection layer or a circular polarization reflection layer.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 15, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi, Akihiro Anzai
  • Patent number: 10431778
    Abstract: An organic light emitting display device is disclosed, which prevents non-uniform luminance and color deviation caused by a change of a viewing angle from occurring. The organic light emitting display device includes a first substrate having a display area and a non-display area; an organic light emitting diode arranged in the display area of the first substrate; and an anisotropic diffusion film arranged on the organic light emitting diode, having a diffusion property varied depending on an incident angle.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: October 1, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: SeungJu Gwon, SeMin Lee