Patents Examined by Edward J. Glick
  • Patent number: 11520197
    Abstract: An active-pixel device assembly with stray-light reduction includes an active-pixel device including a semiconductor substrate and an array of active pixels, a light-transmissive substrate disposed on a light-receiving side of the active-pixel device, and a rough opaque coating disposed on a first surface of the light-transmissive substrate and forming an aperture aligned with the array of active pixels, wherein the rough opaque coating is rough so as to suppress reflection of light incident thereon from at least one side. A method for manufacturing a stray-light-reducing coating for an active-pixel device assembly includes depositing an opaque coating on a light-transmissive substrate such that the opaque coating forms a light-transmissive aperture, and roughening the opaque coating to form a rough opaque coating, said roughening including treating the opaque coating with an alkaline solution.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: December 6, 2022
    Assignee: OmniVision Technologies, Inc.
    Inventors: Chun-Sheng Fan, Wei-Feng Lin
  • Patent number: 11520184
    Abstract: A color conversion display panel includes: a color conversion layer provided on a substrate and including a semiconductor nanocrystal and a scatterer; and a transmission layer provided on the substrate, wherein the semiconductor nanocrystal is included at greater than 30 wt % of an entire content of the color conversion layer, and the scatterer is included at equal to or less than 12 wt % of the entire content of the color conversion layer.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: December 6, 2022
    Inventors: Won Woo Jang, Jin Ho Park, Won Sik Oh, Hyang-A Park, Seung In Baek, Seoung Bum Pyoun, Jae Min Ha, Hyun Ji Ha
  • Patent number: 11513403
    Abstract: A liquid crystal panel (display panel) 11 includes a display area AA configured to display images, a non-display area NAA outside the display area AA, a light blocking layer (a light blocking portion) 11i disposed at least in the non-display area NAA and configured to block light, a signal line connection line (a narrow line portion) 29 where lines are arranged at intervals in the non-display area NAA, and a common electrode connection line portion (a wide line portion) 30 disposed in the non-display area and having a line width greater than that of the signal line connection line 29 and including empty portions 34.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 29, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Ryosuke Yuminami, Masakazu Miyamoto, Masahiro Yoshida, Masayuki Takashima, Toshiaki Fujihara
  • Patent number: 11506927
    Abstract: The present invention provides a polarizer, a manufacturing method of the polarizer, and a display panel. The polarizer includes a transparent base substrate and a metal wire grid layer arranged on the transparent base substrate. The metal wire grid layer includes at least two wire grid units spaced apart from each other, and each of the wire grid units includes a plurality of metal wires parallel to each other. The transparent base substrate has a light transmissive region and a light emitting region, and the wire grid units are arranged corresponding to the light emitting region.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 22, 2022
    Inventor: Bei Jiang
  • Patent number: 11506940
    Abstract: A transmittance-variable layer and a transmittance-variable device including the same are disclosed herein. In some embodiments, a transmittance-variable device includes a polarization layer and a transmittance-variable layer disposed on the polarization layer, wherein the transmittance-variable layer includes a first base layer disposed on the polarization layer and a spacer fixed on a surface of the first base layer opposite to the polarization layer, and a second base layer facing the first base layer and spaced apart from the first base layer by the first spacer, wherein the first spacer maintains a gap between the first and second base layers, and a first light modulating material disposed in the gap.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 22, 2022
    Inventors: Jung Woon Kim, Su Young Ryu, Byoung Kun Jeon, Yong Sung Choi, Seong Min Lee, Hye Min Yu
  • Patent number: 11493801
    Abstract: According to one embodiment, a display device comprises a liquid crystal layer held between a first substrate and a second substrate, a display region having a first region in which a plurality of pixels are provided, a non-display region provided in an island-like shape in the display region and having a second region, a first polarizer and a second polarizer that overlap the first region, and a third polarizer and a fourth polarizer that overlap the second region, wherein a transmission axis of the fourth polarizer and a transmission axis of the second polarizer form an angle other than 0° and other than 90° with each other.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: November 8, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventor: Mitsutaka Okita
  • Patent number: 11493791
    Abstract: A light blocking screen includes a liquid crystal array mounted to a window. The liquid crystal array has a plurality of liquid crystal (LC) pixels, each of which is selectively darkenable. A controller is operatively connected to the liquid crystal array and configured to darken a set of the LC pixels, such that the darkened set of LC pixels limits light passage through the window in one or more selected areas. The LC pixels need not limit light passage through the entire window. The controller may determine a location of a glare source relative to the window and a location of a user proximate the window, and then darken the set of the LC pixels in an area between the glare source and the user, such that the glare source is limited from shining onto the user. The screen may be incorporated into vehicles or buildings.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: November 8, 2022
    Assignee: GM Global Technology Operations LLC
    Inventor: Benjamin J. Richards
  • Patent number: 11487057
    Abstract: An optical substrate and a display device are provided. The optical substrate includes a light guide plate and a plurality of light selection units, wherein, the light guide plate includes a light-incident surface and a light-exiting surface, and the light-exiting surface includes a plurality of light-exiting regions; each light selection unit is configured to select light incident from the light-incident surface and propagating in the light guide plate, such that monochromatic light of different colors are emitted from multiple light-exiting regions corresponding to the each light selection unit, and each of the multiple light-exiting regions emits monochromatic light of a single color.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: November 1, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Xiandong Meng, Wei Wang, Xianqin Meng, Jifeng Tan, Xiaochuan Chen
  • Patent number: 11487163
    Abstract: This application discloses a display panel and a display apparatus. The display panel includes: a substrate; a seal, arranged around a non-display region of the substrate, to form a sealing region; a peripheral component, exposed out of the sealing region; and a protection component, covering the peripheral component. The peripheral component includes a metal line and a black matrix. The protection component includes a seal, a support spacer, a Tuffy adhesive, a black adhesive, and a passivation layer. The Tuffy adhesive is attached on a side portion of the substrate, to completely cover the metal line and the black matrix.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: November 1, 2022
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jia-Ren Lin
  • Patent number: 11480836
    Abstract: A liquid crystal on silicon device is described. The liquid crystal on silicon device includes a plurality of mirror electrodes, a transparent electrode, a liquid crystal material, and a plurality of microlenses. The plurality of mirror electrodes are arranged periodically to form an array of pixels, each pixel included in the array of pixels configurable to reflect incident light. The transparent electrode is optically aligned with the plurality of mirror electrodes. The liquid crystal material is disposed between the transparent electrode and the plurality of mirror electrodes. The plurality of microlenses are optically aligned with the plurality of mirror electrodes. Each microlens included in the plurality of microlenses is positioned to focus the incident light on a respective one of the plurality of mirror electrodes.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: October 25, 2022
    Assignee: Omnivision Technologies, Inc.
    Inventors: Alireza Bonakdar, Libo Weng, Badrinath Padmanabhan
  • Patent number: 11474287
    Abstract: Provided is an optical element with which a high diffraction efficiency can be obtained with a simple configuration. The optical element includes: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound, in which the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, and the optically-anisotropic layer has a region in which an alignment direction of a liquid crystal compound in at least one of upper and lower interfaces has a pre-tilt angle with respect to the interface.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: October 18, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Hiroshi Sato, Ayako Muramatsu
  • Patent number: 11474388
    Abstract: The present disclosure relates to a display panel. The display panel includes a first substrate, a second substrate, a display material layer, an active component layer, a color filter layer and a light source. The display material layer is disposed between the first substrate and the second substrate. The active component layer and the color filter layer are disposed between the first substrate and the display material layer. The light source is disposed on one side of the second substrate, and emits light. The light passes through the second substrate and the color filter layer and arrives at the first substrate, and is reflected by the first substrate and then enters the color filter layer. The light further passes through the color filter layer, enters the display material layer, passes through the display material layer, and is outputted to the exterior.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: October 18, 2022
    Assignee: SICHUAN LONGHUA FILM CO. LTD.
    Inventors: Po Hung Yao, Yao-Chang Wang, Erh-Ming Hsieh
  • Patent number: 11467327
    Abstract: The present disclosure provides numerous applications for the use of liquid crystal polarization gratings (LCPGs) to controllably steer light. When combined with an image sensor, light generated or reflected from different fields of view (FOV) can be steered, allowing an increase in the FOV or the resolution of the image. Further, the LCPG can stabilize the resulting image, counteracting any movement of the image sensor. The combination of LCPGs and liquid crystal waveguides (LCWGs) allows fine deflection control of light (from the LCWG) over a wild field of view (from the LCPG). Further applications of LCPGs include object tracking and the production of depth images using multiple imaging units and independently steered LCPGs. The LCPG may be used in controlling both the projection and reception of light.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: October 11, 2022
    Assignee: Analog Devices International Unlimited Company
    Inventors: Eoin E. English, Andrew William Sparks, Scott Robert Davis, Tyler Adam Dunn, Maurizio Zecchini, Michael Ziemkiewicz, Ronald A. Kapusta, Javier Calpe Maravilla, Paul O'Sullivan, Jonathan Ephraim David Hurwitz, Erik D. Barnes, Monica Redon Segrera, Krystian Balicki
  • Patent number: 11460733
    Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: October 4, 2022
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • Patent number: 11454850
    Abstract: A pixel electrode and a display panel are provided. The pixel electrode includes a sub-pixel region and a main pixel region arranged at intervals. The sub-pixel region includes a first sub-pixel region and a second sub-pixel region, wherein a receiving chamber is formed between the first sub-pixel region and the second sub-pixel region, and the main pixel region is disposed in the receiving chamber.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: September 27, 2022
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yoonsung Um, Kaili Qu
  • Patent number: 11442331
    Abstract: A mobile communication apparatus, an optical assembly, and an aperture module thereof are provided. The aperture module includes a first liquid crystal (LC) aperture unit and a second LC aperture unit. The first LC aperture unit includes a first LC layer and two first transparent electrode layers disposed on two sides of the first LC layer. At least one of the first transparent electrode layers has a first opening. The second LC aperture unit includes a second LC layer and two second transparent electrode layers disposed on two sides of the second LC layer. At least one of the second transparent electrode layers has a second opening having a central axis overlapped with that of the first opening. The aperture module is configured to control each of the first switch region and the second switch region to be at a light permeable state or a light shield state.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: September 13, 2022
    Assignee: SILICON TOUCH TECHNOLOGY INC.
    Inventor: Chi-Yuan Chin
  • Patent number: 11442199
    Abstract: An optical film can be used in a display panel as a viewing angle diffusion film. The optical film includes a first electrode layer, an isotropic optical material layer, a liquid crystal material layer and a second electrode layer that are stacked. A plurality of groove structures are disposed on the isotropic optical material layer, and each of the groove structures is filled with the liquid crystal material layer.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: September 13, 2022
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hu Dou, Ziping Wu, Gang Yu
  • Patent number: 11429008
    Abstract: According to various embodiments, a tunable optical metasurface includes an array of elongated resonator rails arranged parallel to one another. Liquid crystal is positioned within an optical field region between adjacent resonator rails. A controller can selectively apply a voltage differential pattern to the elongated resonator rails to adjust a phase response thereof. According to various embodiments, a cross-backplane reflector is utilized that allows for mid-array routing or edge-array routing of electrical connections between the controller and the resonator rails. The cross-backplane reflector comprises a plurality of elongated optical reflectors extending parallel to one another and perpendicular to the array of resonator rails. An optically transmissive (e.g., transparent) dielectric may electrically separate the resonator rails from the optical reflectors. A pattern of vias formed therein facilitates electrical connections between the optical reflectors and the resonator rails.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: August 30, 2022
    Assignee: Lumotive, LLC
    Inventors: Gleb M. Akselrod, Erik Edward Josberger, Mark C. Weidman, Prasad Padmanabha Iyer
  • Patent number: 11422409
    Abstract: An optical waveplate is provided. The optical waveplate includes a first birefringent film including optically anisotropic molecules arranged to form a first twist structure. The optical waveplate also includes a second birefringent film including optically anisotropic molecules arranged to form a second twist structure, the second birefringent film being stacked with the first birefringent film. The optically anisotropic molecules at a first portion of the first birefringent film adjacent an interface between the first birefringent film and the second birefringent film are configured with a first azimuthal angle. The optically anisotropic molecules at a second portion of the second birefringent film adjacent the interface are configured with a second azimuthal angle. The first azimuthal angle is substantially the same as the second azimuthal angle.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: August 23, 2022
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Jacques Gollier, Fenglin Peng, Junren Wang, Lu Lu
  • Patent number: 11402695
    Abstract: A liquid crystal display apparatus having improved viewing angle characteristics in a region vertically asymmetrical. A liquid crystal display apparatus of the present invention includes: a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules aligned in homogeneous alignment under a state in which an electric field is absent; a first polarizer arranged on a viewer side of the liquid crystal cell; a second polarizer arranged on a back surface side of the liquid crystal cell; a first optical compensation layer arranged between the liquid crystal cell and the first polarizer; and a second optical compensation layer arranged between the liquid crystal cell and the first optical compensation layer. A refractive index nz1 in a thickness direction of the first optical compensation layer is less than 1.5187, and a refractive index nz2 in a thickness direction of the second optical compensation layer is less than 1.5340.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: August 2, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Ryo Kawamura, Takehito Fuchida, Katsunori Takada, Yoshitsugu Kitamura