Patents Assigned to Japan Display Inc.
  • Patent number: 10739917
    Abstract: In a display apparatus provided with an electrophoresis layer, such a display apparatus capable of operating a driving electrode for use in displaying an image as an electrode for use in detecting an input position is provided. A display apparatus includes: a substrate; another substrate that is disposed so as to face the substrate; an electrophoresis layer sandwiched between the substrate and another substrate; a plurality of pixel electrodes formed on the substrate; and a plurality of driving electrodes formed on another substrate. An electric field is formed between each of the plurality of pixel electrodes and each of the plurality of driving electrodes, so that an image is displayed, and an input position is detected based on an electrostatic capacitance of each of the plurality of driving electrodes.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Yoshiharu Nakajima
  • Patent number: 10743410
    Abstract: According to one embodiment, a display device includes a first substrate including a first base member and a first terminal, a second substrate including a second base member including a first surface opposing the first terminal and a second surface on an opposite side to the first surface, a second terminal located on a side of the second surface, and a first hole, an organic insulating layer located between the first terminal and the second base member and including a second hole connecting to the first hole and a connecting material provided on the first hole to electrically connect the first terminal and the second terminal to each other, at least one of the first terminal and the second terminal including an oxide electrode in contact with the connecting material.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Shuichi Osawa, Shoji Hinata, Yoshikatsu Imazeki, Yoichi Kamijo, Yoshihiro Watanabe
  • Patent number: 10739643
    Abstract: According to one embodiment, a display device includes a first substrate with a first alignment film, a second substrate with a second alignment film, and a liquid crystal layer interposed therebetween. The first substrate has first and second electrodes. An initial alignment direction of liquid crystal molecules of the liquid crystal layer is parallel to a first direction or a direction orthogonal to the first direction. The second electrode includes comblike electrodes extending parallel to the first direction and a connecting portion which connects the comblike electrodes. The connecting portion includes a projection which projects in a second direction more than an outermost comblike electrode.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 10739887
    Abstract: A display device includes a substrate including a display region arranged with pixels, and a terminal part on the outside of the display region, a polarizer overlapping the display region and the terminal part, the polarizer arranged with first wirings, a retardation plate overlapping the display region and the terminal part, the retardation plate between the pixels and the polarizer, and second wirings arranged in a direction intersecting the direction the first wirings is arranged, wherein an interval the first wirings is arranged is narrower than an interval the second wirings is arranged, the first wirings and the second wirings are arranged sandwiching a dielectric body, the first wirings and the second wirings are connected to a lead-out line, and an end of the retardation plate at the terminal part is closer to the display region than an end of the polarizer.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventor: Kazuhiro Odaka
  • Patent number: 10739884
    Abstract: According to one embodiment, a display device includes a display panel configured to perform display operation based on a pixel signal in a display period, a detector configured to perform touch detection operation in touch detection periods, and a driver configured to control frame operations. The driver is configured to control a first frame operation in a first frame periods including the display period, a first touch detection period and a first display adjustment period, and control a second frame operation in a second frame periods including the display period, a first touch detection period and a second display adjustment period. The second display adjustment period is longer than the first display adjustment period and includes the second touch detection period.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Jin Ota, Hidetoshi Komatsu, Tsutomu Takabayashi
  • Patent number: 10741790
    Abstract: A display device according to the present invention includes a display region arranged with a plurality of pixels, and a sealing layer covering the display region, wherein the sealing layer includes an insulation layer having a density pattern, the density pattern is a pattern including a low density region and a high density region, the low density region has the insulation layer with a lower density than an average density within the display region of the insulation layer, and the high density region has the insulation layer with a higher density than an average density within the display region of the insulation layer.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventor: Hiraaki Kokame
  • Patent number: 10739903
    Abstract: The reliability of a display device with an input device is improved. A plurality of detection electrodes (input position detection electrodes) forming an electrostatic capacity between them and a common electrode of a display device to detect an input position are formed on a different substrate from substrates configuring the display device. Moreover, a polarizing plate and the substrate on which the plurality of detection electrodes are formed are adhesively fixed via, for example, an adhesive layer so that the plurality of detection electrodes are fixed so as to be separated apart from the display device. Thus, a distance between electrodes (the detection electrode and a driving electrode) for detecting an input position can be set separately from a thickness of the display device, and therefore, reduction in detection sensitivity (detection reliability) for the input position due to increase in the electrostatic capacity can be suppressed.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Kohei Azumi, Koji Ishizaki, Hideki Kaneko, Tsutomu Harada
  • Patent number: 10739890
    Abstract: A display device includes: a first substrate; a display functional layer; a plurality of first electrodes; a light guide plate; a plurality of second electrodes; and a controller configured to control the first and second electrodes. The first substrate, the display functional layer, the first electrodes, the light guide plate, and the second electrodes are stacked in this order. The controller performs operations during a plurality of display periods to display an image, during a first sensing period, and during a second sensing period in a time-division manner. The first electrodes are supplied with a first drive signal and an electromotive force caused by electromagnetic induction is generated in the second electrodes during the first sensing period. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between the first electrodes and the second electrodes during the second sensing period.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Toshinori Uehara
  • Patent number: 10739905
    Abstract: According to one embodiment, a sensor-equipped display device includes a display panel, a detection electrode, a conductive member arranged at intervals from the display panel and the detection electrode, and controller. In a first sense period, the controller drives a common electrode of the display panel or the detection electrode and extracts input position data from the detection electrode. In a second sense period, the controller drives the conductive member and extracts first input pressure data from a first electrode, the controller drives a second electrode and extracts second input pressure data from the conductive member, or the controller drives a third electrode and extracts third input pressure data from the third electrode.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Kazuyuki Kobayashi, Hayato Kurasawa, Hiroshi Mizuhashi, Masaya Tamaki, Takeo Koito, Koji Noguchi
  • Patent number: 10739514
    Abstract: According to one embodiment, a light source device includes a wiring substrate including a mount region, a plurality of light sources arranged and mounted on the mount region of the wiring substrate, and a heat reactive adhesive sheet adhered to the wiring substrate.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Takeshi Kaneki, Hiromichi Tanaka
  • Publication number: 20200251059
    Abstract: A display device includes: a liquid crystal display panel including a liquid crystal between two substrates; and first, second, and third light sources emitting light in different colors. A light emission period includes a first light emission period in which luminance of the first light source is higher than luminance of the second and third light sources, and at least one of the second and third light sources emits light, a second light emission period in which the luminance of the second light source is higher than the luminance of the first and the third light sources, and at least one of the first and third light sources emits light, and a third light emission period in which the luminance of the third light source is higher than the luminance of the first and second light sources, and at least one of the first and second light sources emits light.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 6, 2020
    Applicant: Japan Display Inc.
    Inventor: Hisashi TOMITANI
  • Publication number: 20200249508
    Abstract: A first organic insulating film is arranged on a first substrate in a circumference area outside an active area. A mounting portion is located in the circumference area for mounting a signal source. A second organic insulating film is formed on a second substrate in the circumference area so as to face the first substrate. The second substrate exposes the mounting portion. A seal material is arranged between the first organic insulating film and the second organic insulating film to attach the first substrate and the second substrate. A resin layer is arranged between the first organic insulating film and the second organic insulating film in the circumference area, and formed in a rectangular frame shape including four linear ends. An end along the mounting portion is formed broadly than other ends.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Applicant: Japan Display Inc.
    Inventor: Atsuko Oono
  • Publication number: 20200251549
    Abstract: In the second area, the lower base surface of the wirings is in contact with the first inorganic insulating film including a stepped portion including upper surfaces having mutually different heights and being adjacent to each other in the second direction, and a stepped surface rising from the upper surfaces except the uppermost surface. The first inorganic insulating film constitutes at least the upper surfaces except the lowest surface, and the stepped surface. The adjacent wirings include a pair of convex portions protruding toward a direction facing each other. One and the other of the pair of convex portions are separated to face each other at a position where the stepped portion does not exist in the second area in the first inorganic insulating film.
    Type: Application
    Filed: April 20, 2020
    Publication date: August 6, 2020
    Applicant: Japan Display Inc.
    Inventor: Hiroshi TABATAKE
  • Publication number: 20200251597
    Abstract: According to one embodiment, a semiconductor substrate includes a first basement, a gate line, a source line, an insulating film, a first pixel electrode, and a first transistor and a second transistor connected parallel at positions between the source line and the first pixel electrode. Each of a first semiconductor layer of the first transistor and a second semiconductor layer of the second transistor includes a first region, a second region, and a channel region. The first semiconductor layer and the second semiconductor layer are in contact with a first surface that is a surface of the insulating film on the source line side. The channel region of each of the first semiconductor layer and the second semiconductor layer wholly overlaps the gate line.
    Type: Application
    Filed: February 3, 2020
    Publication date: August 6, 2020
    Applicant: Japan Display Inc.
    Inventors: Masataka IKEDA, Hirotaka HAYASHI, Hitoshi TANAKA
  • Publication number: 20200251531
    Abstract: A sealing member containing conductive particles and disposed in a seal region is formed between a display panel and a touch panel. A laminated structure formed on the display panel includes a first detection lines. The first detection lines extend from the seal region to a connection region and are connected through the conductive particles to terminals of second detection lines formed on the touch panel. A peripheral edge of the organic barrier is located inward from the conductive particles of the sealing member. The above described structure can facilitate a work for connecting external lines such as FPC to the display panel and the touch panel. Further, the structure can secure stability of electrical connection between the external lines and the touch panel.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Applicant: Japan Display Inc.
    Inventors: Mitsuhide MIYAMOTO, Hajime AKIMOTO
  • Patent number: 10732754
    Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a control circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The control circuit unit is provided in the peripheral region, and includes a first circuit unit including a third line connection line, and a third line switch. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. The first circuit unit is partially disposed between the drive element and the first substrate.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: August 4, 2020
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Toshiaki Fukushima, Gen Koide, Yoshiyuki Kii
  • Patent number: 10732347
    Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal panel and a backlight device. The backlight device includes a case with a bottom plate and a side plate, a light guide on the bottom plate, and a light source device. The light source device includes a wiring substrate and a light-emitting element on the wiring substrate. The wiring substrate includes a mounting portion on which the light-emitting element is mounted, a connection wiring portion on a back surface side of the bottom plate, and a joint portion which joints the mounting portion and the connection wiring portion together. The joint portion extends from an inside to an outside of the case through a gap between the side plate of the case and the liquid crystal panel.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: August 4, 2020
    Assignee: Japan Display Inc.
    Inventors: Kosuke Matsubara, Ken Sugiyama, Kazunari Nishita, Koji Hiramoto
  • Patent number: 10734417
    Abstract: According to one embodiment, a display device includes first semiconductor layers crossing a first scanning line in a non-display area, the first semiconductor layers being a in number, second semiconductor layers crossing a second scanning line in the non-display area, the second semiconductor layers being b in number, and an insulating film disposed between the first and second semiconductor layers and the first and second scanning lines, wherein a and b are integers greater than or equal to 2, and a is different from b, and the first and second semiconductor layers are both entirely covered with the insulating film.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: August 4, 2020
    Assignee: Japan Display Inc.
    Inventor: Masato Nakamura
  • Patent number: 10734462
    Abstract: A display device includes a substrate that is formed of a plurality of layers stacked together and a circuit layer. A circuit layer includes a display element area in which a plurality of pixel electrodes corresponding to a plurality of unit pixels and a self-luminous element layer are provided, and a peripheral area that has a wiring to the display element area and a terminal and is at least partially bent. The substrate includes a first area that overlaps the display element area of the circuit layer and a second area that overlaps the peripheral area and is at least partially bent. The layers include at least one inorganic layer and a plurality of organic layers. The number of the organic layers in the first area is greater than the number of the organic layers in the second area.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: August 4, 2020
    Assignee: Japan Display Inc.
    Inventor: Takuma Nishinohara
  • Patent number: 10732767
    Abstract: Provided is a detection device including at least one first electrode group that includes a plurality of first electrodes. The first electrode outputs a detection signal. A selection driver is configured to perform a first driving during a first period and a second driving during a second period, which is different from the first period.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: August 4, 2020
    Assignee: Japan Display Inc.
    Inventor: Toshinori Uehara