Patents Examined by Paul C Lee
  • Patent number: 11829021
    Abstract: Provided is a polymer dispersed liquid crystal display device including: a pair of substrates including an electrode on at least one substrate; and a composite layer disposed between the pair of substrates. The composite layer includes a liquid crystal component and a polymer network constituted by a cured product of a photopolymerizable liquid crystal compound, and is in a transparent state when no voltage is applied and in a scattering state when a voltage is applied, and the polymer network has a helical structure with a number of turns of from one to less than eight in the composite layer.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: November 28, 2023
    Assignee: Sharp Display Technology Corporation
    Inventors: Koji Murata, Kimiaki Nakamura, Mariko Honda, Tadashi Hasegawa, Kazutaka Hanaoka, Yasuhiro Haseba, Shinji Shimada, Atsuko Kanashima
  • Patent number: 11829040
    Abstract: The present application provides a color film substrate, a display device, and a color film substrate fabricating method. The color film substrate comprises a display region and a non-display region, wherein the color film substrate in the non-display region comprises: a base; and a photoresist layer disposed on the base; a planarization layer disposed on a side of the photoresist layer away from the base; a support layer disposed on a side of the planarization layer away from the base; wherein a total thickness of the photoresist layer, the planarization layer, and the support layer is greater than or equal to a first thickness threshold.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: November 28, 2023
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xianshu Yu, Lei Guo
  • Patent number: 11822181
    Abstract: Provided is a liquid crystal display device sequentially including: a first polarizer; a liquid crystal panel; a second polarizer; a biaxial retarder; a third polarizer; and a backlight including a light source and a prism sheet disposed closer to the viewing surface side than the light source is. The prism sheet includes prisms arranged in multiple columns on a surface close to the viewing surface side. The liquid crystal display has a light diffusion property curve having no side lobe or having a side lobe satisfying a ratio of a local maximum luminance to a local minimum luminance of 1.35 or less, the light diffusion property curve being obtained by plotting a luminance in a white display state in a direction perpendicular to ridge lines of the prisms against a polar angle.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: November 21, 2023
    Assignee: Sharp Display Technology Corporation
    Inventors: Yuichi Kawahira, Masahiro Hasegawa, Ryosuke Saigusa, Akira Sakai
  • Patent number: 11815752
    Abstract: A display module and a method for driving the same, a display apparatus, and a vehicle are provided. The display module includes a backlight component, and a display component and a light-adjusting component that are located at a side of the backlight component facing toward a light-emitting direction of the display module. The backlight component includes a first light guide structure and a light regulating structure. The light-adjusting component includes first and second electrodes, and a first liquid crystal. The display module has a sharing mode and an anti-peeping mode. In the sharing mode, the first electrode and the second electrode are not energized, and the first liquid crystal is in a wide viewing angle state. In the anti-peeping mode, the first electrode and the second electrode drive the first liquid crystal to be in a narrow viewing angle state.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: November 14, 2023
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Longcai Xin, Zhiyuan Zhang, Fan Tian
  • Patent number: 11796847
    Abstract: An array substrate, includes: a substrate, a first metal layer, a first buffer layer, and an active layer, a gate insulating layer, a second metal layer, a first insulating layer, a third metal layer and a first planarization layer. The first metal layer is electrically connected with the first doped area of the active layer through the bridge layer of the second metal layer. The third metal layer is electrically connected with the second doped area of the active layer. The array substrate of the present disclosure reduces a size of a thin film transistor by stacking the first metal layer, the second metal layer, and the third metal layer, thereby increasing pixel density. A display panel is also provided.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: October 24, 2023
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yong Xu, Fei Ai
  • Patent number: 11796727
    Abstract: Nanostructured shapes comprising at least a first part and a second part. The first part has a longitudinal axis L and comprises a first absorbing material and an emitting material. The second part is connected to the first part and comprises a second absorbing material. The second part mainly absorbs light with direction of polarization other than the long axis L of the first part, and the nanostructured shape emits light mainly polarized along the long axis L of the first part. The disclosure further relates to an assembly of nanostructured shapes, to a method of synthesizing nanostructured shapes and to a polarizing light emitting plate comprising such nanostructured shapes.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 24, 2023
    Assignee: Universiteit Gent
    Inventors: Kristiaan Neyts, Yerzhan Ussembayev
  • Patent number: 11796881
    Abstract: A device includes a polymer stabilized blue phase liquid crystal (“PS-BPLC”) layer. The device also includes an alignment structure coupled with the PS-BPLC layer. LC molecules disposed in contact with the alignment structure are configured to have a spatially varying in-plane orientation pattern that is at least partially defined by the alignment structure. The PS-BPLC layer is configured to forwardly deflect a polarized light having a predetermined handedness, and transmit a polarized light having a handedness that is orthogonal to the predetermined handedness.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: October 24, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Yuge Huang, Nicholas John Diorio, Jr., Lu Lu
  • Patent number: 11789322
    Abstract: According to one embodiment, a display device includes a plurality of red subpixels, a plurality of green subpixels, and a plurality of blue subpixels, wherein, in a first direction, the red subpixel and the green subpixel, the green subpixel and the blue subpixel, and the blue subpixel and the red subpixel are arranged to be adjacent to each other, and in a second direction, the red subpixel and the blue subpixel, the blue subpixel and the green subpixel, and the green subpixel and the red subpixel are arranged to be adjacent to each other, and in the subpixels, as to subpixel columns adjacent to each other, when an image signal of the same gradation is input with respect to the subpixels of same color, brightness of one subpixel column is higher than that of another subpixel column.
    Type: Grant
    Filed: December 30, 2022
    Date of Patent: October 17, 2023
    Assignee: Japan Display Inc.
    Inventors: Kazunari Tomizawa, Tsutomu Harada
  • Patent number: 11789327
    Abstract: To form a sufficiently large storage capacitor, a liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal held between the first substrate and the second substrate, the liquid crystal display panel having multiple pixels arranged in matrix. The first substrate has, in a transmissive display area provided in each of the pixels, a laminated structure containing a first transparent electrode, a first insulating film, a second transparent electrode, a second insulating film, and a third transparent electrode which are laminated in this order. The first transparent electrode and the second transparent electrode are electrically insulated from each other and together form a first storage capacitor through the first insulating film, and the second transparent electrode and the third transparent electrode are electrically insulated from each other and together form a second storage capacitor through the second insulating film.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: October 17, 2023
    Assignees: Japan Display Inc., Panasonic Intellectual Property Corporation of America
    Inventors: Tohru Sasaki, Takahiro Ochiai
  • Patent number: 11789261
    Abstract: An optical device (EPE1) comprises a waveguide plate (SUB1) comprising an in-coupling element (DOE1), a first expander element (DOE2a), a second expander element (DOE2b) and an out-coupling element (DOE3), wherein the out-coupling element (DOE3) is arranged to form combined output light (OUT1) by combining the first output light (OB3a) with the second output light (OB3b), wherein the in-coupling element (DOE1) has a first grating period (d1a) for forming the first guided light (B1a), and wherein the in-coupling element (DOE1) has a second different grating period (d1b) for forming the second guided light (B1b), wherein the optical device (EPE1) comprises a first spectral filter region (C2a) to prevent coupling of red light from the in-coupling element (DOE1) to the out-coupling element (DOE3) via the first expander element (DOE2a). The optical device (EPE1) can display a color image with an extended field of view.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: October 17, 2023
    Assignee: SHENZHEN OPTIARK SEMICONDUCTOR TECHNOLOGIES LIMITED
    Inventors: Tapani Kalervo Levola, Houqiang Jiang, Yisheng Zhu
  • Patent number: 11774791
    Abstract: A switchable light modulator device (201, 202, 203, 204, 205) comprises a first substrate (101, 102, 103) and a second substrate (141, 142, 143, 144) with opposite major surfaces spaced apart by one or more polymer structures that each comprise two or more parts and define wall features (21b, 22b, 23b) for a plurality of cavities (111, 112, 113, 114), the cavities sealing a fluid (71, 72, 73, 74) or gel in discrete volumes. Each of the one or more polymer structures comprises a mould part (21, 22, 23) bonded to the first substrate and defining a recess (31, 32, 33), and a cast part (81, 82, 83, 84) filling the recess and bonded to the second substrate and a surface of the recess, the cast part being defined by the surface of the recess and the second substrate replicating the surfaces of both.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: October 3, 2023
    Assignee: E Ink Corporation
    Inventors: Donal Martin O'Keeffe, Timothy O'Keeffe
  • Patent number: 11762228
    Abstract: A display device in the present disclosure includes: a display panel having a display on a front surface; a flexible circuit board connected to the display panel; and a panel chassis supporting a rear surface of the display panel. On an outer side of a lateral end of the display panel, the panel chassis has a flexible circuit board guide projected from the rear surface side of the display panel to the front surface side thereof. The flexible circuit board is provided along the flexible circuit board guide in a manner to extend on an outer side thereof.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: September 19, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Katsutoshi Nakamura
  • Patent number: 11754870
    Abstract: A device is provided. The device includes a polarization hologram polymer layer having a wavy surface, an optic axis of the polarization hologram polymer layer being configured with a spatially varying orientation in a first predetermined in-plane direction. The device also includes a compensation layer disposed at the wavy surface of the polarization hologram polymer layer and configured to compensate for the wavy surface in shape.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: September 12, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Junren Wang, Yuge Huang, Yun-Han Lee, Lu Lu
  • Patent number: 11747684
    Abstract: A display panel includes a first substrate on which a conductive structure layer is formed. The conductive structure layer has a bonding area close to a side edge thereof, at least a part of the bonding area of the conductive structure layer protrudes from a first side edge of the first substrate, and is bent toward a side of the first substrate away from the conductive structure layer and fixed; an end surface of the first side edge of the first substrate is provided with a first protective strip, the first protective strip has a first smooth surface facing the conductive structure layer and smoothly connected with a side surface of the first substrate on which the conductive structure layer is formed, and a bent part of the conductive structure layer is attached to the first smooth surface.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: September 5, 2023
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhongbao Wu, Chuandong Liao, Ruoyu Ma, Haiwei Sun
  • Patent number: 11747678
    Abstract: A display apparatus includes a liquid crystal panel; light sources configured to emit blue light; a reflective sheet including a first edge portion and a second edge portion, wherein a plurality of holes are disposed on the reflective sheet, the plurality of holes includes a first hole, a second hole, and a third hole, the first hole is disposed at a first distance from an edge of the first edge portion, the second hole is disposed at a second distance from the edge of the first edge portion, and the third hole is disposed at the first distance from the edge of the first edge portion, wherein the second distance is greater than the first distance; and pluralities of light conversion dots disposed around the first, second, and third holes, respectively, wherein the third hole is disposed on an overlap portion of the first and second edge portions.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: September 5, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoonki Park, Hyungjin Kim, Yongsung Yoo, Youngwook Jung, Minnyeong Han
  • Patent number: 11740498
    Abstract: A backlight unit includes a case having a bottom plate and a side wall, an optical component placed inside the case, and an elastic component that engages with the side wall of the case, making contact with the optical component. A side wall of a front bezel is located outside the side wall of the case. The elastic component includes an outer portion. The outer portion is positioned between an inner surface of the side wall of the front bezel and an outer surface of the side wall of the case, makes contact with the inner surface of the side wall of the front bezel and the outer surface of the side wall of the case, and presses the inner surface of the side wall of the front bezel and the outer surface of the side wall of the case along an in-plane direction of the display area.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: August 29, 2023
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventor: Koji Kawashima
  • Patent number: 11733563
    Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.
    Type: Grant
    Filed: November 22, 2022
    Date of Patent: August 22, 2023
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Yosuke Ueba, Tatsuaki Inoue
  • Patent number: 11733573
    Abstract: According to one embodiment, a display device includes a switching element disposed in a display area including a pixel, a color filter layer including a first color filter of a first color and a second color filter of a second color different from the first color and a conductive layer connected to the switching element via a contact hole penetrating the color filter layer. The conductive layer is in contact with the first color filter and the second color filter in the contact hole.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: August 22, 2023
    Assignee: Japan Display Inc.
    Inventor: Osamu Itou
  • Patent number: 11733562
    Abstract: The present disclosure provides a backlight module, a liquid crystal display, and an electronic device. The backlight module includes: a backplane; at least one light source arranged on the backplane; and at least one diffractive optical element arranged above the light source, and a central axis of the diffractive optical element and a central axis of the light source are on a same straight line.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 22, 2023
    Inventor: Qibin Feng
  • Patent number: 11726371
    Abstract: By increasing an interval between electrodes which drives liquid crystals, a gradient of an electric field applied between the electrodes can be controlled and an optimal electric field can be applied between the electrodes. The invention includes a first electrode formed over a substrate, an insulating film formed over the substrate and the first electrode, a thin film transistor including a semiconductor film in which a source, a channel region, and a drain are formed over the insulating film, a second electrode located over the semiconductor film and the first electrode and including first opening patterns, and liquid crystals provided over the second electrode.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: August 15, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura