Patents Examined by Dung T. Nguyen
  • Patent number: 11314119
    Abstract: A lens includes: a substrate that includes a diffraction region where a plurality of protruding strips are coaxially and alternately formed. The diffraction region includes a first diffraction region and a second diffraction region that is located in at least a part of a region different from the first diffraction region. The second diffraction region includes: groove spaces lying between adjacent ones of the protruding strips with one another; and a communication space communicating between adjacent ones of the groove spaces with one another.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: April 26, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Yoshinobu Okada, Eiichiro Hikosaka, Toshifumi Hino, Akifumi Aono, Akihiro Muramatsu
  • Patent number: 11294213
    Abstract: A liquid crystal display device includes a cover bottom including a first bottom surface in a polygonal shape, a first side formed upward from each edge of the first bottom surface, and a first hole formed at the bottom surface, the first side, or the edge; an LED FPCB disposed at an inner surface of the first side; multiple LEDs mounted on the LED FPCB; a reflective plate provided with a second hole formed at a position corresponding to the first hole, the reflective plate being disposed on an upper surface of the first bottom surface; and a cable FPCB provided with a first end extending from one side of the LED FPCB to transmit power or a driving signal from outside, to the LED FPCB, and provided with a second end penetrating through the first hole and the second hole and being disposed outside the cover bottom.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: April 5, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Byungyil Kwak
  • Patent number: 11269218
    Abstract: Provided is a phase difference compensation element that can improve a contrast of a liquid crystal display device and has durability while suppressing an increase in cost and prolongation of lead time. The phase difference compensation element is formed so that, when an optical anisotropic layer is formed on a substrate, the optical anisotropic layer includes a plurality of birefringent films, and a direction of a combined vector obtained by combining respective vectors of the birefringent films when determining a vector with a direction of a line segment obtained by projecting a film formation direction of each birefringent film on a surface of a transparent substrate and a thickness, is substantially the same as a direction of a line segment obtained by projecting a liquid crystal molecule constituting a liquid crystal cell on the surface of the transparent substrate.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 8, 2022
    Assignee: Dexerials Corporation
    Inventor: Junichi Sugawara
  • Patent number: 11256147
    Abstract: An array substrate and a display panel are provided. Each of sub-pixels is provided with a plurality of display domains. A first electrode retaining wall and a second electrode retaining wall are respectively disposed on both sides of the display domain, and the first electrode retaining wall is electrically connected to pixel electrodes. The second electrode retaining wall is electrically connected to common electrodes, and a horizontal electric field is generated between the first electrode retaining wall and the second electrode retaining wall, such that liquid crystal units in the display domain are aligned horizontally, thereby improving transmittance of the sub-pixels.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: February 22, 2022
    Inventor: Jiangchuan Chen
  • Patent number: 11256149
    Abstract: A display panel and a display apparatus are provided. The display panel includes: a first edge and a second edge configured along a first direction and facing opposite to each other; a third edge and a fourth edge configured along a second direction and facing opposite to each other; a display area; and a non-display area surrounding the display area and including a binding area disposed adjacent to the first edge. The binding area includes a first sub-area adjacent to the third edge and a second sub-area adjacent to the fourth edge. Each of the first and second sub-areas includes a plurality of binding soldering pads arranged along the second direction. Each of the plurality of binding soldering pads includes a first section, a second section, and a third section.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: February 22, 2022
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Shumao Wu, Huimin Xie, Xin Dong, Huangyao Wu, Xiufeng Zhou
  • Patent number: 11256142
    Abstract: A liquid crystal display apparatus includes first and second substrates and a liquid crystal layer of vertical alignment type. The first substrate includes pixel electrodes and a first alignment film, whereas the second substrate includes a counter electrode and a second alignment film. Each pixel includes first and second subpixels which allow respectively different voltages to be applied across the liquid crystal layer. Each pixel electrode includes a subpixel electrode provided for each of the first and second subpixels. Each of the first and second subpixels includes first to fourth liquid crystal domains having respectively different reference alignment directions being defined by the first and second alignment films. First to fourth directions, which are the reference alignment directions of the first to fourth liquid crystal domains, each make an angle which is substantially equal to an odd multiple of 45° with respect to the pixel transverse direction.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 22, 2022
    Assignees: SAKAI DISPLAY PRODUCTS CORPORATION, SHARP KABUSHIKI KAISHA
    Inventors: Mitsuaki Hirata, Fumikazu Shimoshikiryoh
  • Patent number: 11249357
    Abstract: A liquid crystal device is provided with a first light-shielding member, a second light-shielding member, a third light-shielding member, and a fourth light-shielding member along an edge of a pixel electrode, and liquid crystal molecules are set with a pretilt direction (an alignment direction) in a direction intersecting both a first direction and a second direction and facing a second intersection region between the third light-shielding member and the fourth light-shielding member. In addition, at a lower layer side of the pixel electrode, a convex portion extending along an end portion of the pixel electrode is provided. The pixel electrode avoids overlapping, in a region along both the first light-shielding member and the second light-shielding member, with the convex portion, and overlaps, in a region along both the third light-shielding member and the fourth light-shielding member, with the convex portion.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: February 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Yukihiro Sugiura
  • Patent number: 11249337
    Abstract: A display panel includes a polarizer and a plurality of optical adjustment layers stacking over one another over the polarizer. The polarizer converts a light incident from its light-incident surface into a linearly polarized light emitting out from its light-emitting surface. Each optical adjustment layer includes a polarization direction-adjusting sub-layer and a quantum rod sub-layer over the polarization direction-adjusting sub-layer. The polarization direction-adjusting sub-layer includes a plurality of adjusting portions and is configured to adjustably control a polarization direction of an incident polarized light. The quantum rod sub-layer includes a plurality of light-excitement portions, and is configured to adjustably change a wavelength of the incident polarized light. Each light-excitement portions contains a plurality of quantum rods, each having its long axis in a substantially same direction.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: February 15, 2022
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yuanhui Guo
  • Patent number: 11237445
    Abstract: An object of the invention is to provide a circuit technique which enables reduction in power consumption and high definition of a display device. A switch controlled by a start signal is provided to a gate electrode of a transistor, which is connected to a gate electrode of a bootstrap transistor. When the start signal is input, a potential is supplied to the gate electrode of the transistor through the switch, and the transistor is turned off. The transistor is turned off, so that leakage of a charge from the gate electrode of the bootstrap transistor can be prevented. Accordingly, time for storing a charge in the gate electrode of the bootstrap transistor can be shortened, and high-speed operation can be performed.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: February 1, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsushi Umezaki, Hiroyuki Miyake
  • Patent number: 11237440
    Abstract: A pixel structure and a manufacturing method thereof, an array substrate and a display device are provided. The pixel structure includes: a signal line; a common electrode line an extension direction of which is same as an extension direction of the signal line; a transistor including a semiconductor layer which includes a source region and a drain region; a first storage electrode which is insulated from the common electrode line and is connected with the drain region of the semiconductor layer; and a second storage electrode which is connected with the common electrode line and is insulated from the first storage electrode. In the pixel structure, portions, between the signal line and the common electrode line, of the first storage electrode and the second storage electrode includes overlap with each other to form a first storage capacitance.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: February 1, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Duolong Ding, Huafeng Liu, Shengwei Zhao, Chaochao Sun, Chao Wang, Jingping Lv, Meng Yang, Lei Yang, Chongliang Hu, Lin Xie, Bule Shun, Shimin Sun
  • Patent number: 11237424
    Abstract: A display device includes a display panel from which light is emitted; and an optical film to which the light from the display panel is incident. The optical film includes: a first pattern layer having a first refractive index, and a second pattern layer having a second refractive index lower than the first refractive index, the second pattern layer including a plurality of hollow inorganic particles. The second pattern layer which has the second refractive index lower than the first refractive index and includes the plurality of hollow inorganic particles, is disposed further from the display panel than the first pattern layer.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: February 1, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Gu Kim, Jiyun Park, Jongho Son, Jongmin Ok, Sun-Young Chang, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Patent number: 11221526
    Abstract: According to one embodiment, a display device includes a first substrate and a second substrate. The first substrate includes a first area including a display area, a second area adjacent to the first area, and an organic insulating layer formed over the first area and the second area. The second substrate includes a substrate end located in a border between the first area and the second area, and overlaps the first area. The organic insulating layer includes a first groove portion surrounding the display area and formed in a circular shape along an outline of the first substrate. The first groove portion includes a first sidewall and a second sidewall. The first and second sidewalls intersect the substrate end in a plan view.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: January 11, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventors: Gen Koide, Akihiro Ogawa
  • Patent number: 11221522
    Abstract: A liquid crystal panel including: a first substrate with a first alignment film; a liquid crystal layer; and a second substrate with a second alignment film. The first and second alignment films are alignment treated such that pixels each include first to fourth domains with different alignment vectors in a column direction, each alignment vector being defined as lying from a first substrate side long-axis end as a start point to a second substrate side long-axis end as an end point. Each pixel electrode has first fine slits parallel to the alignment vector of the second domain in the second domain, second fine slits parallel to the alignment vector of the third domain in the third domain, and a central slit along a boundary between the second domain and the third domain at the boundary. The first fine slits and the second fine slits are connected via the central slit.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: January 11, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kouichi Watanabe, Shinichi Terashita, Fumikazu Shimoshikiryoh
  • Patent number: 11215870
    Abstract: A pixel structure having a first gray scale display region and a second gray scale display region is provided. The first and the second gray scale display region respectively comprises two first display blocks and a second display block located therebetween. The pixel structure comprises first conductive electrodes, a second conductive electrode, a first active component and a second active component. The first conductive electrodes respectively disposed in the two first display blocks of the first gray scale display region are connected. The second conductive electrode is disposed in the second gray scale display region. The first active component is electrically connected to the first conductive electrodes by a first contact window located at one of the two first display blocks. The second active component is electrically connected to the second conductive electrode by a second contact window located at the second display block.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: January 4, 2022
    Assignee: GIANTPLUS TECHNOLOGY CO., LTD
    Inventors: I-Ta Jiang, Che-Yao Wu
  • Patent number: 11187949
    Abstract: There is provided an array substrate, a manufacturing method therefor, a display panel, and a display device. The array substrate includes: a base substrate, and a gate metal pattern, a gate insulating layer and a source-drain metal pattern which are sequentially disposed on the base substrate. The gate metal pattern includes a signal line and a gate electrode, the signal line is in the peripheral area, the gate insulating layer is provided with a first via hole penetrating the gate insulating layer, the orthogonal projection of the first via hole on the base substrate and the orthogonal projection of the signal line on the base substrate have an overlapping area, the source-drain metal pattern includes a source-drain electrode wire, and the source-drain electrode wire is electrically connected to the signal line through the first via hole. The present disclosure achieves the function of protecting the signal line.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: November 30, 2021
    Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhengdong Zhang, Lei Su, Xiaofei Yang, Mingzhou Guo, Xu Liu
  • Patent number: 11187927
    Abstract: A display device according to a present disclosure comprises: a display region; a frame region disposed around the display region; a plurality of first wirings extending in a first direction in the display region; a first drive circuit electrically connected to one end of each of the plurality of first wirings; a first inspection wiring electrically connected to another end of each of the plurality of first wirings through each of a plurality of inspection thin film transistors; a second inspection wiring connected to a gate electrode of each of the plurality of inspection thin film transistors; an inspection drive circuit electrically connected to the second inspection wiring; and an inspection circuit electrically connected to the first inspection wiring, wherein at least a part of the second inspection wiring extends in the first direction in the display region.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: November 30, 2021
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Hiroyuki Yabuki
  • Patent number: 11187935
    Abstract: A display panel includes an array substrate in which a plurality of pixel electrodes are arranged, and the counter substrate. A non-display area of the array substrate is provided with the transfer electrode for supplying a potential to the counter substrate. The counter substrate includes: a first film; a counter electrode placed closer to the array substrate in relation to the first film, and supplied with the potential from the transfer electrode; and an alignment film stacked on the counter electrode. The counter substrate includes first grooves provided between a display area and a transfer overlapping area overlapping with the transfer electrode, the first grooves penetrating the counter electrode and at least a portion of the first film. The first grooves extend in a first longitudinal direction, and are formed in broken line in the first longitudinal direction.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: November 30, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noriyuki Ohashi, Yasuhiro Kuroe
  • Patent number: 11187947
    Abstract: A liquid crystal display device includes a thin film transistor (TFT) array substrate, an anisotropic conductive adhesive film, a chip, a flexible printed circuit, a color filter substrate, a polarizer, and a protective layer. The TFT array substrate includes an output terminal region, an input terminal region, first test signal wires, and second test signal wires. The second test signal wires are connected to the first test signal wires in an out-of-array wiring region. Material of the first test signal wires is titanium aluminum alloy, and material of the second test signal wires is polycrystalline silicon.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 30, 2021
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiaohui Nie
  • Patent number: 11181762
    Abstract: A display device includes: a first substrate having a first area; a second substrate having a second area larger than the first area and positioned above the first substrate; interconnects on the first substrate; connection pads on a side surface of the first substrate and electrically connected to the interconnects; and a first cover member on the side surface of the first substrate, wherein a side surface of the second substrate protrudes from the side surface of the first substrate in a first direction, and the first cover member is located under the second substrate.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: November 23, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hwan Jeon, Ji Sang Seo, Dong Hyun Won, Wang Su Hong
  • Patent number: 11156879
    Abstract: A liquid crystal display device including a display area, a non-display area surrounding the display area and including a first non-display area disposed on a first side, in a first direction, of the display area and a second non-display area disposed on a second side, in the first direction, of the display area, a first substrate including a first base and a plurality of spacers that are disposed on a first surface of the first base, a second substrate disposed on the first substrate, and a liquid crystal layer disposed between the first and second substrates. The spacers include first spacers, having a first thickness, disposed in the non-display area and second spacers, having a second thickness greater than the first thickness, disposed in the non-display area. A number of second spacers disposed in a first non-display area is different from a number of second spacers disposed in a second non-display area.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: October 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki Pyo Hong, Wan Namgung, Woo Sung Sohn, Ki Won Park, Seung Kyu Lee, In Woo Kim