Patents Assigned to Panasonic Liquid Crystal Display Co., Ltd.
  • Patent number: 10891892
    Abstract: A display device comprises: selector transistors in each of which one of conductive electrodes is connected to each of ends of gate lines, the selector transistor being divided into a plurality; selection signal supplying wirings each of which is provided in each block, and connected to each control electrode of the selector transistors corresponding to the block; gate voltage supplying wirings that are commonly connected to the other conductive electrode of each of the selector transistors; a gate driver that sequentially supplies a gate voltage to the gate voltage supplying wirings while supplying a control voltage to the selection signal supplying wiring in order to on or off the selector transistor, and a light shielding part that is disposed between at least the two adjacent blocks.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: January 12, 2021
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tetsuo Fukami, Masahiro Ishii
  • Patent number: 10884280
    Abstract: A liquid crystal display device comprising; a first display panel including a first substrate, a second substrate that is disposed in a first direction with respect to the first substrate and includes a color filter, and a first liquid crystal layer disposed between the first substrate and the second substrate; a color conversion unit disposed in a second direction opposite to the first direction with respect to the first display panel; and a backlight disposed in the second direction with respect to the color conversion unit. The color conversion unit converts backlight light emitted from the backlight into light of a color corresponding to the color filter, and emits the light.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: January 5, 2021
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
    Inventor: Kikuo Ono
  • Patent number: 10884296
    Abstract: A display device comprises: a display panel in which a plurality of pixels are arranged in a matrix form, wherein the plurality of pixels include a plurality of first pixels and a plurality of second pixels arrayed at a pitch different from an array pitch of the plurality of first pixels, and a number of the plurality of first pixels is different from a number of the plurality of second pixels.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: January 5, 2021
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner, Inc.
    Inventor: Tetsuo Fukami
  • Patent number: 10885865
    Abstract: A drive circuit includes an output circuit provided in a display panel to output a gate-on voltage and a gate-off voltage to a plurality of gate lines. The plurality of gate lines include first to sixth gate lines sequentially disposed in a scanning direction. A first transistor is put into an on state to electrically connect the first gate line and the third gate line, a second transistor is put into the on state to electrically connect the second gate line and the fourth gate line, the third transistor is put into the on state to electrically connect the third gate line and the fifth gate line, and the fourth transistor is put into the on state to electrically connect the fourth gate line and the sixth gate line, after the output circuit outputs the gate-on voltage to the first to fourth gate line.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: January 5, 2021
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshihiro Imajo, Kazunori Inoue, Kenta Endo
  • Patent number: 10867572
    Abstract: An image display device includes: a display; gate signal lines including a first pixel row and a second pixel row; a gate driver; data signal lines; a source driver; and a controller that determines whether the second pixel row has correlation with the first pixel row in an image. When determining that the second pixel row has the correlation with the first pixel row, the controller causes the source driver to supply the data voltage corresponding to the first pixel row, causes the gate driver to supply the gate signal to write the data voltage in the first pixel row, and causes the gate driver to supply the gate signal to write the data voltage corresponding to the first pixel row in the second pixel row.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: December 15, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Tatsuo Itoman, Satoshi Hirotsune
  • Patent number: 10867569
    Abstract: A display device includes: pixel transistors electrically connected to the respective source lines and the respective gate lines; a monitor transistor in which a lead-out wiring of a drain electrode is electrically connected to a first external terminal, a lead-out wiring of a gate electrode is electrically connected to a second external terminal, and a lead-out wiring of a source electrode is electrically connected to a third external terminal; a reference transistor in which a lead-out wiring of a drain electrode is electrically connected to a fourth external terminal, a lead-out wiring of a gate electrode is electrically connected to a fifth external terminal, and a lead-out wiring of a source electrode is electrically connected to a sixth external terminal; and a detector electrically connected to the third external terminal and the sixth external terminal to detect a shift amount of a threshold voltage of the monitor transistor.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 15, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Genshirou Kawachi, Kuniaki Amano, Ryutaro Oke, Daisuke Kajita
  • Patent number: 10845635
    Abstract: A liquid crystal display device includes: first and second liquid crystal cells; first and second circuit boards connected to the first and second liquid crystal cells through first and second flexible wiring boards, respectively; a frame disposed on an opposite side to the first liquid crystal cell with respect to the second liquid crystal cell; and a holder that holds the first circuit board and the second circuit board. The first circuit board and the second circuit board are disposed on an opposite side to the second liquid crystal cell with respect to the frame. The second circuit board is located closer to the frame than the first circuit board, and the holder sandwiches the first circuit board, and stores the second circuit board between the frame and the holder.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: November 24, 2020
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventor: Ryosuke Yabuki
  • Patent number: 10845650
    Abstract: A curved surface display comprises: a first substrate that is curved such that a portion located at a center in a first direction is convex or concave toward a display surface side compared with portions located at both ends in the first direction; a second substrate that is curved along the first substrate while disposed opposite the first substrate; and a sealing material that bonds the first substrate and the second substrate together. The sealing material includes a first sealing section extending in a second direction and a second sealing section extending in the first direction. A width of the first sealing section is larger than a width of the second sealing section.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 24, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshiki Nakano, Akira Isikawa, Masafumi Hirata, Tsutomu Abe, Naotoshi Sumiya, Takeshi Aramaki, Masashi Kuno
  • Patent number: 10845661
    Abstract: A liquid crystal display device comprises: a plurality of pixels arranged in a first direction and a second direction intersecting the first direction, the plurality of pixels including a first pixel, a second pixel, and a third pixel; a plurality of subpixel electrodes arranged in each of the plurality of pixels in the second direction; a plurality of source lines extending in the first direction and crossing a space between the plurality of subpixel electrodes and a space between the first pixel and the second pixel; a first gate lead line extending in the first direction and crossing a space between the first pixel and the second pixel; and a first gate line extending in the second direction, crossing a space between the first pixel and the third pixel, and is electrically connected to the first gate lead line.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 24, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10845644
    Abstract: A backlight for a display device and a display device including the backlight are disclosed. The backlight includes a light guide plate; a light emitting diode substrate; a frame member; and a plurality of adhesive materials spaced apart from each other. The light emitting diode substrate includes a substrate; and a plurality of light emitting diodes fixed to the substrate. The plurality of light emitting diodes are oriented to face a side surface of the light guide plate. A frame member is disposed facing a surface of the substrate that is opposite the plurality of light emitting diodes. In a side sectional view, the plurality of adhesive materials is spaced apart from each other along a length direction of the frame member. The length direction corresponds to a major dimension of the frame member.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: November 24, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Yoichi Yasui
  • Patent number: 10838261
    Abstract: Examples of display devices are described herein. In an example, a display device comprises a color filter (CF) substrate having a black matrix extending in a first direction and a second direction different from the first direction, wherein, in plan view, two adjacent color filters of different colors are aligned along the first direction and two adjacent color filters of a same color are aligned along the second direction. The display device comprises a plurality of spacers arranged in the first direction, wherein the plurality of spacers comprises a first, second and third spacer arranged adjacent to each other. The spacers are arranged, such that along the first direction or the second direction, a distance between a center of the first spacer and a center of the second spacer is different from a distance between the center of the second spacer and a center of the third spacer.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: November 17, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Takashi Mibu
  • Patent number: 10838274
    Abstract: A liquid crystal display panel includes: a plurality of pixels arranged in a matrix; a pixel electrode provided in each of the plurality of pixels; and a plurality of pairs of first video signal lines and second video signal lines provided at each boundary between two pixels adjacent to each other in a first direction. The plurality of pairs of the first video signal lines and the second video signal lines extending in a second direction orthogonal to the first direction. At least a part of the pixel electrode exists between the first video signal line and the second video signal line.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: November 17, 2020
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventor: Daisuke Kajita
  • Patent number: 10831075
    Abstract: A display device is provided. The display device comprises a plurality of data lines extending in a first direction. The display device also comprises a plurality of gate lines. The plurality of gate lines comprises a first gate line, a second gate line and a third gate line extending in a second direction different than the first direction to form a matrix with the plurality of data lines. The first gate line and the second gate line are separated from each other and are arranged in a same row of the matrix. The display device further comprises a first gate connector line and a second gate connector line, respectively, electrically connecting the first gate line and the second gate line to one or two gate drivers. The first gate connector line and the second gate connector line extend in the first direction.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 10, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Norimichi Shirai, Ryutaro Oke, Daisuke Kajita
  • Patent number: 10795202
    Abstract: Techniques of effective and continuous signal transmission in a display device are described. Techniques of the present subject matter allow lead-out lines of the display device to provide continuous transmittance of signals to data/gate lines. In an example, the display device may include a plurality of pixels arranged in a first direction and a second direction in a matrix arrangement, and a plurality of first lines extending in the first direction and a plurality of second lines extending in the second direction. Further, the display device may also include a plurality of lead-out lines extending in the first direction, such that, a lead-out line from the plurality of lead-out line overlaps a second line from the plurality of second lines to form an overlap region, where, the lead-out lines may be electrically connected to the second lines through a plurality of contact points in the overlap region.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: October 6, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10795222
    Abstract: A display device according to a present disclosure comprises: a first glass substrate including a through-hole; a wiring disposed in a first main surface of the first glass substrate; and a terminal formed in a second main surface of the first glass substrate and electrically connected to the wiring through the through-hole.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 6, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hiroyuki Yabuki, Kazuhiko Tsuda
  • Patent number: 10795514
    Abstract: A display device with a touch detection function includes a first substrate including a plurality of gate lines, a plurality of data lines, a plurality of pixel electrodes, and a plurality of touch sensor electrodes; and a second substrate that is disposed opposite the first substrate. The first substrate is disposed on a touch operation side with respect to the second substrate, and a part of the plurality of touch sensor electrodes is disposed in a peripheral region located outside an image display region.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: October 6, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Kikuo Ono
  • Patent number: 10789901
    Abstract: A LCD device of display panels includes n-bit (n<m) driving first display panel that displays first image based on m-bit input image data, n-bit driving second display panel that displays second image based on the m-bit input image data, and image processor including first gradation converter that converts gradation of the m-bit input image data into n-bit gradation, second gradation converter that converts gradation of the m-bit input image data into m1-bit (m1?m) gradation, and extension processor that performs extension processing of extending gradation expression with the n bits on the input image data converted into the m1-bit gradation. The n-bit driving first display panel displays the first image based on the n-bit input image data, and the n-bit driving second display panel displays the second image based on the n-bit input image data subjected to the extension processing.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: September 29, 2020
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
    Inventors: Hideyuki Nakanishi, Toshikazu Koudo, Katsuhiro Kikuchi
  • Patent number: 10788718
    Abstract: A display device includes a first substrate and a second substrate facing the first substrate. A plurality of spacers is disposed between the first and second substrates. The first substrate includes a plurality of gate lines extending in a row direction, a plurality of data lines extending in a column direction, and a plurality of pixel electrodes. A first insulator covers the plurality of gate lines. A semiconductor layer is formed on the first insulator. A common electrode is formed on the second insulator and faces the plurality of pixel electrodes. A plurality of common lines extend along the plurality of data lines and supply common voltage to the common electrode. A plurality of seat regions are formed in which at least one of the plurality of gate lines, the semiconductor layer, and one of the plurality of data lines overlap to face the plurality of spacers.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: September 29, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10783841
    Abstract: A liquid crystal display device comprises a first and second display panels that display a first image and a second image, respectively based on input image data of m bits, and are both driven by n bits, where n<m, a first gradation decision unit that decides an output gradation of n bits for the first display panel based on a first gradation characteristic, the output gradation of n bits for the first display panel and a second gradation decision unit that decides an output gradation of n bits based on a second gradation characteristic for the second display panel, the output gradation of n bits for the second display panel. At least one of the first and second gradation characteristics includes a gradation inverting portion, where the output gradation decreases when the input gradation rises.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: September 22, 2020
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
    Inventors: Satoshi Hirotsune, Toshikazu Koudo
  • Patent number: 10782581
    Abstract: A display device including a curved display surface. The display device comprises a first substrate bent in a first direction, a second substrate that is bent in the first direction, spacers disposed between the first substrate and the second substrate; and bases holding the spacers. The first substrate includes data lines and gate lines, the bases includes: a central base disposed on around a center in the first direction of the display surface; an end base disposed on around an end in the first direction of the display surface; and intermediate bases disposed between the central base and the end base in the first direction, and a width in the first direction of one of intermediate bases is larger than a width in the first direction of the central base.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: September 22, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masafumi Hirata, Hiroaki Goto