Cholesteric Reflector Patents (Class 349/115)
  • Patent number: 11500242
    Abstract: An optical switching element includes a driving substrate, a transparent substrate, a liquid crystal layer and a reflection enhancing film. The driving substrate includes a pixel region having a plurality of pixel electrodes, an outer peripheral region arranged outside the pixel region, and a sealing region. The transparent substrate includes a counter electrode. The liquid crystal layer is held between the driving substrate and the transparent substrate. The reflection enhancing film is arranged on a whole surface of the driving substrate. The reflection enhancing film is formed by stacking one or more of dielectric assemblies each of which includes a set of two stacked dielectric films with different refractive indexes. A dielectric film in a first layer of the reflection enhancing film is subject to planarization.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: November 15, 2022
    Assignee: JVCKENWOOD CORPORATION
    Inventor: Katsunori Ohshima
  • Patent number: 11469328
    Abstract: A preparation method of a thin film transistor (TFT) array substrate includes a step of providing a substrate to prepare a light shielding layer and a buffer layer in sequence on the substrate; and a step of preparing an active layer, a gate insulation layer, a gate, an interlayer insulation layer, and a source/drain metal layer in sequence on the buffer layer; wherein a light absorption layer is prepared on one side of the active layer. Absorbing light prevents most of the light from being reflected to the active layer by disposing a black photoresist below a source and a drain or over the light shielding layer, thereby improving performance of TFT devices.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: October 11, 2022
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Qian Ma
  • Patent number: 11428993
    Abstract: It is a method for manufacturing a liquid crystal display device in which an anchoring force causing liquid crystal molecules to be vertically aligned can be exerted sufficiently. A liquid crystal display device (1) including two substrates AM and CF and a liquid crystal layer (4) sandwiched therebetween can be manufactured. The liquid crystal display device manufacturing method includes: a first step of subjecting a surface of one of the substrates AM and CM that is to be in contact with the liquid crystal layer (4) to hydrophilization treatment; and a second step of disposing the two substrates AM and CF so as to face each other such that the two substrates are in contact with a liquid crystal composition containing liquid crystal molecules and an alignment aid having a polar group and having the function of causing the liquid crystal molecules to be aligned spontaneously.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: August 30, 2022
    Assignee: DIC CORPORATION
    Inventors: Ryo Kanda, Masaomi Kimura, Hyobok Cha
  • Patent number: 11271055
    Abstract: A display apparatus includes: a substrate including a display area and a sensor area, wherein the display area includes a first pixel, and the sensor area includes a second pixel and a transmission portion; a sensor configured to transmit a signal through the substrate via the transmission portion, wherein the second pixel includes second thin-film transistor including a semiconductor layer, and wherein a blocking layer is disposed between the sensor and the second thin-film transistor, wherein the blocking layer covers the semiconductor layer.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: March 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Injun Bae, Chulho Kim, Yunhwan Park, Jin Jeon, Beohmrock Choi
  • Patent number: 11215867
    Abstract: A multi-spectral lens comprises a circular polarizer and a tunable cholesteric filter having an associated reflection band. Incoming light is circularly polarized to one handedness by the circular polarizer, and the tunable cholesteric filter transmits the circularly polarized light and reflects the opposite handedness of the circularly polarized light if within the reflection band of the filter, with the reflection band of the tunable cholesteric filter varying with a control voltage. In a preferred embodiment, a mirror is arranged to receive light transmitted by the tunable cholesteric filter and reflect it back towards the filter with flipped handedness, with the reflected light with flipped handedness that is within the reflection band of the tunable cholesteric filter reflected by the tunable cholesteric filter back toward the mirror. The architecture described effectively converts the reflection band of a tunable cholesteric filter into a tunable bandpass filter for a multi-spectral imaging lens.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: January 4, 2022
    Assignee: Teledyne Scientific & Imaging, LLC
    Inventors: Milind Mahajan, Dong-Feng Gu, Weiya Zhang, John Mansell
  • Patent number: 11214129
    Abstract: A windshield according to an aspect of the present invention is a windshield for an automobile on which an information acquisition device capable of acquiring information from the outside of a vehicle by emitting and/or receiving light can be arranged. The windshield includes; a glass plate including an information acquisition region that is opposite to the information acquisition device and through which the light passes; and an antifog laminate that includes a heat blocking layer and an antifog layer with antifog properties layered on one surface of the heat blocking layer, and that is layered on a surface on a vehicle interior side of the information acquisition region while the other surface of the heat blocking layer faces the surface on the vehicle interior side of the information acquisition region.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: January 4, 2022
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Kazuaki Oya, Toyoyuki Teranishi, Fumiyoshi Kondo, Mitsuhiro Kawazu, Kazutaka Kamitani, Yohei Shimokawa
  • Patent number: 11169411
    Abstract: A multi-spectral lens comprises a circular polarizer and a tunable cholesteric filter having an associated reflection band. Incoming light is circularly polarized to one handedness by the circular polarizer, and the tunable cholesteric filter transmits the circularly polarized light and reflects the opposite handedness of the circularly polarized light if within the reflection band of the filter, with the reflection band of the tunable cholesteric filter varying with a control voltage. In a preferred embodiment, a mirror is arranged to receive light transmitted by the tunable cholesteric filter and reflect it back towards the filter with flipped handedness, with the reflected light with flipped handedness that is within the reflection band of the tunable cholesteric filter reflected by the tunable cholesteric filter back toward the mirror. The architecture described effectively converts the reflection band of a tunable cholesteric filter into a tunable bandpass filter for a multi-spectral imaging lens.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: November 9, 2021
    Assignee: Teledyne Scientific & Imaging, LLC
    Inventors: Milind Mahajan, Dong-Feng Gu, Weiya Zhang, John Mansell
  • Patent number: 11116096
    Abstract: A medium for binding components in an assembly of an electronic device, a method of preparing the same, a display assembly of an electronic device, and a system for simulating mechanical behaviours of the electronic device and the medium. The medium including: a first layer of material defining a first portion arranged to connect with a first electronic component of the assembly; and a second layer of material defining a second portion having a set of mechanical properties with one or more values different from those in the first portion, and the second layer of material is arranged to connect with a second electronic component of the assembly; wherein the combination of the first layer of material and the second layer of material is arranged to minimize stress established in the first electronic component when the first electronic component combines with the second electronic component.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: September 7, 2021
    Assignee: City University of Hong Kong
    Inventors: Xinrui Niu, Bo Xu
  • Patent number: 11106102
    Abstract: The present disclosure discloses a display substrate, a method for manufacturing same, and a display device, relating to the field of display technologies. The display substrate comprises a base substrate, and a transflective layer and a quantum dot (QD) structure that are sequentially stacked in a direction away from the base substrate. The QD structure is configured to emit light in a second wavelength range under excitation by light in a first wavelength range. The second wavelength range is outside the first wavelength range. The transflective layer is configured to reflect the light in the first wavelength range and transmit the light in the second wavelength range.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: August 31, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Weili Zhao
  • Patent number: 11084378
    Abstract: An electrical device for a conveyance is provided. The electrical device includes a flexible display panel having a first edge and a partition device having a second edge. The partition device is disposed between the flexible display panel and the conveyance. A relative position between the first edge and the second edge is changeable.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: August 10, 2021
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Yen-Chung Chen, Jiun-Yan Lai
  • Patent number: 11005017
    Abstract: There is proposed a light source comprising: a semiconductor diode structure adapted to generate light; and an optical enhancement section above the semiconductor diode structure and adapted to output light from the semiconductor diode structure. A partially-reflective layer covers at least a portion of the top of the optical enhancement section and is adapted to reflect a portion of the output light towards the optical enhancement section. The partially-reflective layer has a light transmittance characteristic that varies laterally.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: May 11, 2021
    Inventors: Floris Maria Hermansz Crompvoets, Benno Spinger, Pascal Jean Henri Bloemen, Norbertus Antonius Maria Sweegers, Marc André De Samber
  • Patent number: 11002898
    Abstract: Disclosed herein are techniques for displaying images on multiple image planes in a near-eye display system. A switchable optical device includes a first polarizer configurable to polarize incident light into light of a first circular polarization state, and a second polarizer configurable to transmit light of a second circular polarization state and reflect light of the first circular polarization state into light of the first circular polarization state. The switchable optical device also includes a partial reflector positioned between the first polarizer and the second polarizer. The partial reflector is configured to transmit light from the first polarizer and reflect light from the second polarizer, where the reflected light and the light from the second polarizer have different polarization states. At least one of the first polarizer or the second polarizer includes a cholesteric liquid crystal (CLC) circular polarizer that is switchable by a voltage signal.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 11, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Fenglin Peng, Ying Geng, Yusufu Njoni Bamaxam Sulai, Mengfei Wang, Lu Lu, Jacques Gollier
  • Patent number: 10942401
    Abstract: A reflective liquid crystal display device includes: first to fourth substrates spaced apart from and parallel to each other; a first stack including a first pixel electrode, a first alignment layer, a first common electrode, a second alignment layer and a first cholesteric liquid crystal layer between the first and second alignment layers; a second stack including a second pixel electrode, a third alignment layer, a second common electrode, a fourth alignment layer and a second cholesteric liquid crystal layer between the third and fourth alignment layers; a third stack including a third pixel electrode, a fifth alignment layer, a third common electrode, a sixth alignment layer and a third cholesteric liquid crystal layer between the fifth and sixth alignment layers; and a fourth stack including a first mode electrode, an ion storing layer, an electrolyte layer, an electrochromic layer and a second mode electrode sequentially on the first substrate.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: March 9, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Gi-Hwan Lim, Min-Geun Choi
  • Patent number: 10937769
    Abstract: The present invention provides a display device, including a display unit having a plurality of semiconductor light emitting devices and outputting light to an upper surface thereof, a transparent substrate located on an upper side of the display unit and having a fixing portion protruding from one surface thereof to surround a side surface of the display unit, an elastic portion located to cover a lower surface of the display unit and made of an elastic member, a first back cover coupled to a part of the transparent substrate not overlapping the display unit in an injection manner, and a second back cover located to overlap the display unit and fixed to the first back cover, wherein the elastic portion presses the display unit toward the transparent substrate.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: March 2, 2021
    Assignee: ZKW Group GmbH
    Inventors: Jinhyeok Choi, Heonsuk Oh, Yeonji Lee
  • Patent number: 10872939
    Abstract: Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, and color filters are described.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: December 22, 2020
    Assignee: Apple Inc.
    Inventors: Aleksandr N. Polyakov, Meng-Huan Ho, Yi Huang, Yi Qiao, David S. Hum, Jean-Pierre S. Guillou, Yanming Li, Jun Qi, KiBeom Kim, Kwang Ohk Cheon, Cheng Chen, Rui Liu, ByoungSuk Kim, Ying-Chih Wang, Hung Sheng Lin, Donghee Nam, Tyler R. Kakuda
  • Patent number: 10782555
    Abstract: A liquid crystal panel is switched between a transmission state and a reflection state. The liquid crystal panel includes an absorption type polarizing plate on one side of a liquid crystal element, and a reflection type polarizing plate on the other side thereof. In the reflection state, light incident from the absorption type polarizing plate and transmitted through the liquid crystal element has a polarization axis along the reflection axis of the reflection type polarizing plate, and is reflected by the reflection type polarizing plate. In the transmission state, the light incident from the absorption type polarizing plate and transmitted through the liquid crystal element has a polarization axis along the transmission axis orthogonal to the reflection axis, and is transmitted through the reflection type polarizing plate. The absorption type polarizing plate has an average polarization degree of 60-80% inclusive at wavelengths of 450-650 nm.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 22, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Ayuko Numamae, Kazuya Ootaki
  • Patent number: 10768475
    Abstract: An electro-optic element includes a first substrate defining first and second surfaces. The second surface includes a first electrically conductive layer. A second substrate defines third and fourth surfaces. The third surface includes a second electrically conductive layer. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic material is disposed in the cavity. The electro-optic material being variably transmissive such that the electro-optic element is operable between substantially clear and darkened states. A transflective film includes a liquid crystal material. The transflective film has a thickness of from about 6 ?m to about 24 ?m. An adhesion layer is positioned between the transflective film and the second substrate. An alignment layer is positioned between the transflective film and the adhesion layer.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: September 8, 2020
    Assignee: GENTEX CORPORATION
    Inventor: William L. Tonar
  • Patent number: 10770515
    Abstract: A display can include a plurality of pixels including a first pixel, a second pixel and a third pixel; a first color filter overlapping the first and second pixels; a second color filter overlapping the first and third pixels; and a third color filter overlapping the second and third pixels.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 8, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: JongSung Kim, Ho-Jin Kim, SeungMin Baik
  • Patent number: 10763316
    Abstract: An organic light emitting diode display device includes a substrate including a red pixel region, a green pixel region, and a blue pixel region; a driving thin film transistor and a light emitting diode which are in each of the red pixel region, the green pixel region, and the blue pixel region; and a cholesteric liquid crystal (CLC) layer having an infrared radiation (IR) wavelength in a transmission direction of light emitted from the light emitting diode, wherein the IR wavelength is in a range of 800 nm to 1,100 nm, and the CLC layer has a reflection wavelength of 400 nm to 700 nm at a viewing angle of 40° to 60°.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: September 1, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Ji-Su Han, Hye-Jeong Park
  • Patent number: 10746906
    Abstract: The half mirror includes a retardation layer, a circularly polarized light reflecting layer, and a front panel that are disposed in this order. The retardation layer has a front phase difference as measured at a wavelength of 500 nm of 107 to 127 nm and a front phase difference as measured at a wavelength of 475 nm of 110 to 130 nm. The circularly polarized light reflecting layer includes three cholesteric liquid crystal layers. The three cholesteric liquid crystal layers have different selective reflection center wavelengths ?1, ?2, and ?3. The center wavelengths ?1, ?2, and ?3 satisfy 380 nm<?1<500 nm and 520 nm<?2<?3<780 nm. The cholesteric liquid crystal layer having the center wavelength ?1 is disposed nearest to the front panel side.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: August 18, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi
  • Patent number: 10739655
    Abstract: The present disclosure belongs to the field of display technology, and particularly relates to an optical waveguide display substrate, a manufacturing method thereof, and a display apparatus. The optical waveguide display substrate comprises a side light source, an alternating-electric-field electrode structure, and a light scattering layer, wherein the side light source is provided at at least one side of the light scattering layer, the light scattering layer is switchable between a transparent state and a light scattering state under influence of an alternating electric field applied by the alternating-electric-field electrode structure, so that incident light from the side light source is scattered out of the optical waveguide display substrate to form a display image, and the light scattering layer comprises a polymer network and a light scattering liquid crystal material.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: August 11, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Changcheng Ju
  • Patent number: 10732407
    Abstract: A display, such as a fixed head up display, can be configured as a near eye display. Display can be used in the environment of the user. Display includes an image source fixed with the environment and a combiner system. The combiner system is configured to be disposed at a near eye location with respect to the user. The combiner system includes at least one diffraction grating member. The diffraction grating member has an input and for receiving an image from the image source and a combiner end for receiving light from the real world scene. The image received at the input end and the light received from the outside scene are provided to the user.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: August 4, 2020
    Assignee: Rockwell Collins, Inc.
    Inventors: Robert B. Wood, Robert D. Brown
  • Patent number: 10720092
    Abstract: An optical axis of a light emitting element is inclined against a normal line of a light emitting surface of the light emitting element to a central side of a display area in a row direction according to positions of subpixels in the row direction, and the optical axis is inclined against the normal line of the light emitting surface to the central side of the display area in a column direction according to the positions of the subpixels in the column direction. A range of inclination of the optical axis is different in the row direction and the column direction. In the row direction and the column direction, the subpixels are disposed such that color filters of the same color are arranged in a direction in which the range of inclination becomes larger, and color filters of colors which are different from each other are arranged in another direction.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: July 21, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 10718975
    Abstract: A backlight unit includes an optical filter made of at least two or more filters. A first filter of the at least two or more filters reflects light within a first wavelength range, and a second filter of the at least two or more filters reflects light within a second wavelength range. The backlight unit has a structure that can prevent or reduce an effect on display performance, which would otherwise be caused by degradations in uniform color impression due to characteristics of light sources or a backlight structure.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: July 21, 2020
    Assignee: LG Display Co., Ltd.
    Inventor: YoungJae Kwak
  • Patent number: 10711977
    Abstract: A display switching device includes a light source emitting light having a first polarization direction and light having a second polarization direction different from the first polarization direction, a first polarizing plate having a first display region configured to transmit light in the first polarization direction and display a first display mark, and a second polarizing plate having a second display region configured to transmit light in the second polarization direction and display a second display mark. The second polarizing plate is arranged such that the first display region at least partially overlaps with the second display region. At least a part of one of the first display region and the second display region includes a mixed part in which a polarization part with a polarizing function and a non-polarization part without any polarizing function are mixed.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 14, 2020
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Masato Kozuka, Mitsuru Naruse
  • Patent number: 10700309
    Abstract: Provided are an optical member for enhancing luminance and an organic light-emitting display device having the same. An optical member includes: a linear polarizer, a blue cholesteric liquid crystal (CLC) layer configured to transmit light, the light having only one of: a left-handed circularly polarized light component and a right-handed circularly polarized light component, and a quarter wave plate configured to convert the transmitted light, having the left-handed circularly polarized light component or right-handed circularly polarized light component, into linear polarized light, wherein the blue cholesteric liquid crystal (CLC) layer and the quarter wave plate are located on a same side of the linear polarizer.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: June 30, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Youngwook Kim, Hyunjong Noh, Seonghan Hwang, Chimyung Ahn
  • Patent number: 10670781
    Abstract: A mirror with an image display function includes in order: an image display device; a ¼ wavelength plate; a circular polarization reflection layer; and a front surface plate, the front surface plate includes a substrate and an inorganic reflection layer, the inorganic reflection layer is a semi-transmissive semi-reflective layer, the circular polarization reflection layer includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region. The half mirror includes in order: the ¼ wavelength plate, the circular polarization reflection layer, and the front surface plate.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: June 2, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Katsuyuki Takada, Mikio Tomaru
  • Patent number: 10642048
    Abstract: Techniques disclosed herein relate to folded optical systems for near-eye display. In one embodiment, an optical device includes a first polarizer, a second polarizer, and a partial reflector positioned between the first polarizer and the second polarizer. The first polarizer is configured to polarize incident light into light of a first circular polarization state. The second polarizer is configured to transmit light of a second circular polarization state and reflect light of the first circular polarization state without changing its polarization state. The partial reflector is configured to transmit light from the first polarizer, and reflect light from the second polarizer. The light reflected by the partial reflector and the light from the second polarizer have different polarization states.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: May 5, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Fenglin Peng, Lu Lu, Mengfei Wang, Ying Geng, Jacques Gollier
  • Patent number: 10642116
    Abstract: A display may include one or more display pixels in an array of pixels. A display pixel may include a storage capacitor chat stores a pixel data signal. The storage capacitor may be formed from a pixel electrode structure, a capacitor electrode structure, and a common electrode structure that is interposed between the pixel electrode structure and capacitor electrode structures. Each electrode structure may be formed from transparent conductive materials deposited on respective display layers. The pixel electrode structure and capacitor electrode structure may be electrically coupled by a conductive via structure that extends through the display layers without contacting the common electrode structure. The conductive via structure may contact underlying transistor structures such as a source-drain structure.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: May 5, 2020
    Assignee: APPLE INC.
    Inventors: Zhibing Ge, Lei Zhao, Ming-Chin Hung, Szu-Hsien Lee, Cheng Chen, Shih-Chang Chang
  • Patent number: 10620479
    Abstract: The optical film is an optical film including a cholesteric liquid crystal layer, in which first regions having a first film thickness and second regions having a second film thickness which is smaller than the first film thickness are alternately arranged with a period P of 0.5 ?m to 2.0 ?m in at least one direction in a plane, a difference in film thickness between the first film thickness and the second film thickness is in a range of 0.2 ?m to 1.0 ?m, and a helical pitch of a cholesteric phase in the first region is different from a helical pitch of a cholesteric phase in the second region.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: April 14, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Daisuke Kashiwagi
  • Patent number: 10613257
    Abstract: The present disclosure provides a pixel unit, a display panel, and a display device, which relates to the field of display technology. The pixel unit includes: a base substrate; a reflective layer, disposed on a side of the base substrate; a resonant layer, disposed on a side of the reflective layer away from the base substrate; a transflective layer, disposed on a side of the resonant layer away from the base substrate; and a scattering layer, disposed on a side of the transflective layer away from the base substrate.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 7, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Lianjie Qu, Bingqiang Gui, Yonglian Qi, Chengshao Yang
  • Patent number: 10578873
    Abstract: A head mounted display of which thickness may be reduced is disclosed. The head mounted display comprises a lens, and a display module accommodating unit for providing an image to the lens. The display module accommodating unit includes a display module for displaying an image, a first quarter wave (?/4) plate arranged between the display module and the lens, delaying a phase of incident light as much as ?/4, a second quarter wave plate arranged between the first quarter wave plate and the lens, delaying a phase of incident light as much as ?/4, a reflective polarizing plate arranged between the second quarter wave plate and the lens, passing through first linear polarized light and reflecting second linear polarized light crossing the first linear polarized light, and a semi-transmissive plate arranged between the first quarter wave plate and the second quarter wave plate.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: March 3, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Keongjin Lee, SungMin Jung, HanSeok Kim
  • Patent number: 10551662
    Abstract: A display device substrate includes a transparent substrate, a frame member disposed on the transparent substrate and formed in a frame region surrounding a display region, a first transparent resin layer formed on the transparent substrate having the frame member formed thereon, a black matrix formed on the first transparent resin layer such that the display region is divided into plural openings in a matrix form, and a second transparent resin layer formed on the first transparent resin layer on which the black matrix is formed. The frame member includes carbon as a major colorant and has a light shielding property, and the black matrix includes at least one organic pigment as a major colorant.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: February 4, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Yukihiro Kimura, Kenzo Fukuyoshi
  • Patent number: 10509242
    Abstract: A switchable light modulator device comprises a fluid layer disposed between opposite spaced apart major surfaces of first and second substrates. Each of the substrates comprise first and second interoperable microstructures formed on the opposite major surfaces. The respective microstructures fit together to join the first and second substrates and to define wall portions for a plurality of cavities, the cavities sealing said fluid in discrete volumes.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: December 17, 2019
    Assignee: Vlyte Innovations Limited
    Inventor: Donal O'Keeffe
  • Patent number: 10444561
    Abstract: The disclosed technology relates to a colorful liquid crystal thin film, a method of thereof and a display device. An embodiment of the method of manufacturing a colorful liquid crystal thin film comprises: adjusting a voltage applied across a liquid crystal cell filled with blue phase liquid crystal until the liquid crystal cell shows a required color; and radiating a portion of the liquid crystal cell needed to show the required color by ultraviolet rays.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 15, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Mingchao Li, Jaegeon You
  • Patent number: 10386670
    Abstract: A first substrate of a display device includes a TFT provided for each pixel and including an oxide semiconductor layer. A second substrate includes a color filter layer and a light blocking layer. At least one of a first, second and third color filter included in the color filter layer has an average transmittance of 0.2% or less for visible light having a wavelength of 450 nm or less. In pixels provided with color filters having an average transmittance of 0.2% or less for visible light having a wavelength of 450 nm or less, the light blocking layer (a) includes a TFT shading portion extending along a channel length direction and having a width that is less than or equal to a length of the oxide semiconductor layer along a channel width direction; (b) includes a TFT shading portion extending along the channel width direction and having a width that is less than or equal to the length of the oxide semiconductor layer along the channel length direction; or (c) includes no TFT shading portion.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 20, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Seiichi Uchida, Kuniaki Okada, Naoki Ueda
  • Patent number: 10350597
    Abstract: A transport device comprises: a fluid cell comprising parallel substrates; an anisotropic electrolyte disposed in the fluid cell; and electrodes configured to apply an AC electric field to the anisotropic electrolyte disposed in the fluid cell. A substrate of the fluid cell includes a pattern that induces a director distortion pattern in the anisotropic electrolyte disposed in the fluid cell. The director distortion pattern has a gradient configured to induce electrokinetic flow of the anisotropic electrolyte in the fluid cell in response to the AC electric field applied by the electrodes. Cargo, such as particles, gas bubbles, or fluid, is dispersed in the anisotropic electrolyte and transported in the fluid cell by the induced electrokinetic flow of the anisotropic electrolyte. The induced electrokinetic flow may be linear, curvilinear, circular so as to induce mixing, depending on the predesigned director pattern.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 16, 2019
    Assignee: Kent State University
    Inventors: Oleg D. Lavrentovich, Qi-Huo Wei, Sergij V. Shiyanovskii, Chenhui Peng, Yubing Guo
  • Patent number: 10345648
    Abstract: The present disclosure provides a backlight structure and a liquid crystal display device. The backlight structure comprises: an array substrate; a polarizer layer on a back face of the array substrate; and a light source at a light incident side of the array substrate. Specifically, the light source is configured such that light emitted thereby is emitted into the array substrate from the light incident side of the array substrate and incident on the polarizer layer. Moreover, the polarizer layer is configured for reflecting the light incident thereon while polarizing the reflected light and emitting it out from a front face of the array substrate, wherein the front face and the back face of the array substrate face each other and intersect the light incident side of the array substrate respectively.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: July 9, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jun Xu, Qing Zhang, Hu Li, Tongmin Liu, Linfei Shao
  • Patent number: 10331080
    Abstract: A mobile apparatus is provided that is able to equip any object of value, such as a watch or piece of jewelery, and protect it. The present mobile apparatus includes: an electronic module able to execute a mobile application, a display screen connected to the electronic module and arranged to display information relative to the mobile application, and a fastening support whereof the shapes and dimensions are arranged so that the mobile apparatus can successively equip any object of value, and to be able to fasten, removably and by superposition, at least one display screen to an object of value when object of value is attached around part of a human body. In addition, the mobile apparatus covers at least part of a surface of the object of value designed to be easily visible by the person when the object is worn.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: June 25, 2019
    Inventor: Pascal Counas
  • Patent number: 10325550
    Abstract: The electronic mirror device includes a display and a controller. The display includes a body case, an image display unit, and a light control filter, and is mounted on an installation position of a rear-view mirror in an interior of a vehicle for displaying an image captured by a camera mounted to the vehicle. The body case has an opening, and the image display unit is mounted to the opening of the body case. The light control filter is disposed to face a display surface of the image display unit. The light control filter can switch between at least two modes including a light reflecting mode and a light transmitting mode based on supply of electricity. The controller controls the image display unit and the light control filter.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: June 18, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Takashi Okohira
  • Patent number: 10324251
    Abstract: A display module is provided. The display module includes a backlight module with an upper surface, a display panel opposite to the backlight module, and a glue having a first contact surface and a second contact surface located between the display panel and the backlight module, wherein the first contact surface is in contact with the display panel, the second contact surface is in contact with the upper surface of the backlight module, and there is a gap between the display panel and the backlight module. A method for fabricating a display module is also provided.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: June 18, 2019
    Assignee: INNOLUX CORPORATION
    Inventors: Li-Ling Chen, Chien-Chih Chen, Chia-Chun Yang, Chin-Cheng Kuo
  • Patent number: 10324346
    Abstract: A liquid crystal display device 10 includes a backlight device 12 exiting light, a liquid crystal panel 11 disposed on a light exit side with respect to the backlight device 12, a first conductive layer 31, and a conductive bonding member 32. The liquid crystal panel 11 includes an array substrate 11b, a CF substrate 11a overlapping the array substrate 11b on an opposite side from the backlight device 12 side, and a first polarizing plate 11d disposed on the backlight device 12 side with respect to the array substrate 11b. The first conductive layer 31 is disposed on a plate surface of one of the array substrate 11b and the first polarizing plate 11d. The conductive bonding member 32 is electrically connected to the first conductive layer 31 to bond the backlight device 12 and the liquid crystal panel 11 and connected to ground.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: June 18, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kosuke Nagata, Masayuki Hata
  • Patent number: 10120206
    Abstract: [Problem] The present invention provides eyewear, such as polarized sunglasses, having cholesteric liquid crystal layers, wherein the eyewear has a metallic tone and antiglare properties, minimizes the reduction in light-polarizing element absorptive capability that is associated with circular polarization, and is moreover unaffected by external degrading factors such as sebum, moisture, and salt air. [Solution] This optical film is characterized by being provided with a light-reflecting layer R comprising a cholesteric liquid crystal layer that has right-handed helical orientation, a light-reflecting layer L comprising a cholesteric liquid crystal layer that has left-handed helical orientation, and a polarizing element layer.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 6, 2018
    Assignees: NIPPON KAYAKU KABUSHIKI KAISHA, MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Kouichi Tanaka, Yoshiyuki Yahagi, Hideyoshi Fujisawa, Takuya Gotou, Katsuyuki Murai, Kazuhisa Mitsuhata, Kyousuke Nakamura
  • Patent number: 10114247
    Abstract: A display panel and display device having the same are provided. The display panel includes a quantum dot color filter layer configured to convert a color of light; a transparent front substrate provided at a first side of the quantum dot color filter layer; and a low refractive layer provided between the quantum dot color filter layer and the front substrate, the low refractive layer having a refractive index that is lower than a refractive index of the quantum dot color filter layer.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: October 30, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Kye Hoon Lee
  • Patent number: 10012960
    Abstract: A watch including: a rear cover; a dial fixedly connected with the rear cover, the dial and the rear cover defining a first cavity; a transparent touch screen located on a side of the dial facing away from the rear cover and fixedly connected with the dial, the transparent touch screen and the dial defining a second cavity; at least one pointer located in the second cavity and being rotatable relative to the dial; and a driving system located in the first cavity and configured to drive the at least one pointer to rotate and the transparent touch screen to operate.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: July 3, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xiangyan Zhang
  • Patent number: 9964810
    Abstract: A display panel includes a pair of substrates a display medium layer held between the pair of substrates and has a display region and a frame region outside the display region and a hole on an inner side of the frame region penetrating the pair of substrates and the display medium layer. The display panel further includes a hole-periphery sealing part disposed between the pair of substrates so as to surround the hole, in which the hole-periphery sealing part includes an angled portion or a protrusion.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: May 8, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hisashi Watanabe, Masayuki Kanehiro, Youhei Nakanishi
  • Patent number: 9840668
    Abstract: Provided are a liquid crystal device, a composition capable of forming a liquid crystal layer, a method of manufacturing the liquid crystal device, a system for manufacturing the liquid crystal device, and a use of the liquid crystal device. The liquid crystal device is a device capable of exhibiting, for example, a normally transparent or black mode, exhibiting a high contrast ratio, being driven with a low driving voltage, and exhibiting excellent durability such as thermal stability. Such a liquid crystal device may be applied to various optical modulators such as a smart window, a window protective film, a flexible display device, an active retarder for displaying 3D images, or a viewing angle control film.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: December 12, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Jung Sun You, Dong Hyun Oh
  • Patent number: 9790429
    Abstract: Provided are a liquid crystal device, a composition capable of forming a liquid crystal layer, a method of manufacturing the liquid crystal device, a system for manufacturing the liquid crystal device, and a use of the liquid crystal device. The liquid crystal device is a device capable of exhibiting, for example, a normally transparent or black mode, exhibiting a high contrast ratio, being driven with a low driving voltage, and exhibiting excellent durability such as thermal stability. Such a liquid crystal device may be applied to various optical modulators such as a smart window, a window protective film, a flexible display device, an active retarder for displaying 3D images, or a viewing angle control film.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 17, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Jung Sun You, Dong Hyun Oh
  • Patent number: 9791612
    Abstract: A lighting system can comprise an edgelit panel, for example a lightguide that may have a panel or slab shape with an edge that is illuminated by an array of light emitting diodes extending along the edge. The edgelit panel may have light directing features associated with the edge. The light directing features can redirect light that is coupled through the edge. The redirected light can emit from a major face of the lightguide to produce a correspondingly redirected pattern of illumination. The resulting illumination of the lighting system can be biased in a particular direction as may be useful for various lighting applications. For example, in a streetlight application, the lighting system can produce illumination that is biased in a street side direction relative to a house side direction.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: October 17, 2017
    Assignee: Cooper Technologies Company
    Inventor: Dylan Isaac James
  • Patent number: RE47018
    Abstract: A transparent display apparatus is provided that is constructed to transmit or block a light of images selectively according to a supply of electric power to a conventional transparent organic light emitting diode. The transparent display apparatus includes a transparent organic light emitting diode having a glass substrate, a transparent anode, a hole transport layer, an emitting layer, an electron transport layer and a transparent cathode. The transparent display apparatus includes an insulating layer stacked on the transparent cathode, and first and second transparent ITOs stacked on the insulating layer to deliver electromotive force onto an entire surface and to transmit or block the light of images according to the on/off state of a power source. The transparent display apparatus also includes an electro chromic layer provided between the first and the second transparent ITOs and including transparent and colorless chemicals.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: August 28, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Ho-Seong Seo