Patents Assigned to Panasonic Liquid Crystal Display Co., Ltd.
  • Patent number: 10620733
    Abstract: A touch panel comprising first electrodes that extend in a first direction and second electrodes that extend in the second direction, wherein each of the first electrodes and each of the second electrodes are constructed with conductive wires having mesh shape, each of the first electrodes is formed such that wide portions and narrow portions, each of the narrow portions having a width that is a length in the second direction narrower than each of the wide portions, are alternately arranged in the first direction, and one wide portion and one narrow portion in an endmost first electrode formed at an end are narrower than one wide portion and one narrow portion in an inner first electrode located inside the endmost first electrode, respectively.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: April 14, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshikazu Koudo, Ken Shiiba
  • Patent number: 10620471
    Abstract: A curved display includes a first substrate and a second substrate in a stacked configuration. The first substrate includes pixel electrodes that are arranged in a matrix and electrical lines that extend in a first direction. The second substrate includes light shielding portions that extend in the first direction. Also disclosed is a method for manufacturing a curved display that includes attaching a first substrate to a second substrate in a stacked configuration and bending the first substrate and the second substrate to be curved.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: April 14, 2020
    Assignee: Panasonic Liquid Crystal Display Co.. Ltd.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10621937
    Abstract: A display device includes data lines extending in a first direction, gate lines extending in a second direction, a source driver that supplies a data signal to the data lines, a gate driver that supplies a gate signal to the gate lines, and a timing controller that determines scan order of the gate lines and outputs image data to the source driver based on the scan order. The timing controller determines the scan order of the gate lines based on an input image corresponding to input image data input from an outside, and switches first scan order and second scan order in each frame, the first scan order and the second scan order being different from each other in the scan order.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: April 14, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideyuki Nakanishi, Yoshihisa Ooishi
  • Patent number: 10613390
    Abstract: An IPS type liquid crystal display device superior in mass productivity and improved in image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment by the liquid orientation control film and realizing stable alignment of liquid crystals comprises: a pair of substrates, at least one which is transparent; a liquid crystal layer disposed between the pair of substrates; a group of electrodes formed on at least one of the pair of substrates to apply an electric field to the liquid crystal layer; plural active elements connected to the group of electrodes; and an orientation control film disposed on at least one of the pair of substrates, wherein said orientation control film is made of a photosensitive polyimide and a polyamide acid ester and is given orientation control ability by being irradiated with substantially linearly polarized light.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: April 7, 2020
    Assignees: Japan Display Inc, Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu
  • Patent number: 10607554
    Abstract: Embodiments of a display device for displaying a marked image on a display device are disclosed. The display device includes a control circuit configured to receive image data and supplementary data, and a display panel. The display panel includes a plurality of main pixels, each of the plurality of main pixels including a main pixel electrode and configured to display the image data, and a plurality of supplementary pixels, each of the plurality of supplementary pixels including a supplementary pixel electrode and configured to display the supplementary data. The plurality of main pixel electrodes are arranged in a series of columns and rows to form a matrix with the plurality of supplementary pixel electrodes being interspersed within the matrix. The plurality of main pixels are larger in size than the plurality of supplementary pixels.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: March 31, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Seiichi Kawashima
  • Patent number: 10599262
    Abstract: A touch panel includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of wirings. Each of the plurality of first electrodes has a first portion formed on a layer different from that on which the second electrodes are formed and intersecting the second electrodes, and a second portion formed on the same layer as that on which the second electrodes are formed, but separated from the second electrode. The second electrode and the second portion of the first electrode are formed on a layer different than the layer where the wiring is formed. The first portion of the first electrode is connected to the second portion through a contact portion formed in an insulating film made of a negative resist between the first portion and the second electrode.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: March 24, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Masahiro Teramoto
  • Patent number: 10598994
    Abstract: A liquid crystal display device includes: a first display panel; and a second display panel opposing to the first display panel. Each of the first and second display panel includes a plurality of source lines, a plurality of gate lines, a plurality of thin film transistors, and a plurality of pixel electrodes electrically connected to corresponding one of the thin film transistors. In a second display panel, at least two thin film transistors are electrically connected to a same second source line and a same second gate line.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: March 24, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Ikuko Mori, Teruhisa Nakagawa, Kazuhiko Tsuda, Katsuji Tanaka
  • Patent number: 10598983
    Abstract: A liquid crystal display device includes: a first polarizing plate, a first liquid crystal cell, a second polarizing plate, a third polarizing plate, a second liquid crystal cell, and a fourth polarizing plate, which are arranged from a front side to a back side in this order. P1, P2, P3, P4 represent degrees of polarization of the first polarizing plate, the second polarizing plate, the third polarizing plate, and the fourth polarizing plate, respectively, one of a relational expression of P1>P2, P3, P4, a relational expressions of P4>P1, P2, P3, and a relational expression of P1, P4>P2, P3 is satisfied.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: March 24, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoichi Yasui, Katsuhiro Kikuchi, Kazuhiko Tsuda
  • Patent number: 10591762
    Abstract: A method for manufacturing a liquid crystal display device including a first substrate and a second substrate, each of the first substrate and the second substrate having flexibility, the method includes a first step of manufacturing a display panel having flexibility, the display panel including the first substrate and the second substrate, a second step of bending the display panel such that a display of the display panel is constructed with a first flat surface and a second flat surface and a curved surface disposed between the first flat surface and the second flat surface, the curved surface having a predetermined curvature radius; and a third step of fixing the display panel subjected to the second step to a cover member keeping the curved surface in a given shape.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: March 17, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tomoharu Notoshi, Kazuhiko Tsuda
  • Patent number: 10593281
    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 21, 2018
    Date of Patent: March 17, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshihiro Imajo, Kazunori Inoue, Kenta Endo
  • Patent number: 10578930
    Abstract: A liquid crystal display device including a first substrate including a first display electrode and a second display electrode that is disposed opposite the first display electrode with an insulator interposed between the first display electrode and the second display electrode, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. In each pixel, the first display electrode includes a plurality of first openings, and the second display electrode includes a plurality of second openings disposed corresponding to positions of the plurality of first openings.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: March 3, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Koji Mimura
  • Patent number: 10578935
    Abstract: A display device includes a first substrate formed with a first gate line, a first source line, a first thin film transistor, and a first light shielding unit; a second substrate disposed opposite to the first substrate; and a first liquid crystal layer disposed between the first substrate and the second substrate. The first light shielding unit is disposed between the first thin film transistor and the first liquid crystal layer, and overlaps at least a part of a first channel region of the first thin film transistor in planar view.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: March 3, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Teruhisa Nakagawa, Daisuke Kajita
  • Patent number: 10579188
    Abstract: A display device with a touch panel includes a display panel, and a touch panel formed above the display panel. The touch panel includes X electrodes which extend in a first direction, and Y electrodes which extend in a second direction different from the first direction. The X electrodes and the Y electrodes respectively include intersection portions each formed where the X electrodes and the Y electrodes overlap each other, and electrode portions each formed between the intersection portions, wherein the electrode portions of one of the X electrodes is smaller in area than the electrode portions of one of the Y electrodes, and wherein floating electrodes are formed close to the electrode portion of the one of the X electrodes or Y electrodes, and over a reduced portion of the X electrode.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 3, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Kouichi Anno
  • Patent number: 10571626
    Abstract: A display device with at least one hole is susceptible to poor image quality because of the luminance difference between the front of the hole and behind the hole in relation to the plurality of light sources located along one edge of the backlight unit. To decrease the luminance difference, the distance between adjacent light sources are adjusted, the light ray directions are altered and cutout sections are provided.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: February 25, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Naoki Sato, Ryosuke Yabuki
  • Patent number: 10564459
    Abstract: A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: February 18, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideo Tanabe, Masaru Takabatake, Toshiki Kaneko, Atsushi Hasegawa, Hiroko Sehata
  • Patent number: 10564789
    Abstract: An electrostatic capacitive coupling type touch panel including an input region having four sides, a peripheral region around the input region, terminals formed in the peripheral region along a first side of the input region, wirings formed In the peripheral region along second, third and fourth sides of the input region, and the input region having X and Y electrodes crossing. The wirings are connected between corresponding X or Y electrodes and wiring terminals plurality of terminals. A dummy wiring, which is not connected to any of the X electrodes or Y electrodes, is provided outside the wiring formed in a farthest position from the input region, and the dummy wiring extends through the peripheral region along the second, third and fourth sides of the input region, and electrically connects to at least one dummy wiring terminal.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: February 18, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hiroshi Esaka, Shouji Ikeda, Kouichi Anno
  • Patent number: 10564502
    Abstract: A display device includes: gate signal lines extending in a first direction; data signal lines extending in a second direction; gate lead lines extending in the second direction and respectively connected to the gate signal lines; pixel electrodes electrically connected to the data signal lines, respectively; and a common electrode opposed to the plurality of pixel electrode. Each one of gate lead lines is disposed between two neighboring ones of the data signal lines. A first opening is provided for a first area of the common electrode, and the first area overlaps one of the gate signal lines, and is between the one of the gate lead lines and a one of the two neighboring data signal lines that is closer to the one of the gate lead lines than is the other one of the two neighboring data signal lines.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: February 18, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventor: Teruhisa Nakagawa
  • Patent number: 10559269
    Abstract: An electronic display device includes a first display panel and a second display panel that are positioned in a stacked configuration. Each of the first display panel and second display panel has pixels. An image processing unit of the electronic display device is configured to generate color image data for the first display panel or contrast image data for the second display panel by applying an expansion based on a viewing position. A method of displaying an image on an electronic display device includes generating color image data and generating contrast image data. One of generating color image data or generating contrast image data includes an expansion based on a viewing position.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: February 11, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Satoshi Hirotsune
  • Patent number: 10558091
    Abstract: A liquid crystal display device includes a TFT substrate having a display region where pixels each having a TFT and a pixel electrode are formed in a matrix, a counter substrate having a display region where color filters of three colors are formed in a matrix, the TFT substrate and the counter substrate being bonded together with a sealing material in a seal portion at a periphery, and liquid crystal sealed between the TFT substrate and the counter substrate by the seal material. In the display region, a first insulation film, a first alignment film, a first columnar spacer, an overcoat film, a first color filter among the color filters of three colors are stacked in this order between the TFT substrate and the counter substrate.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: February 11, 2020
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takashi Yamamoto, Tomoya Sugano, Takamitsu Kamada
  • Patent number: 10559271
    Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: February 11, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideyuki Noguchi, Toshiki Onishi, Yoshihisa Ooishi