Patents Assigned to Sharp Display Technology Corporation
  • Patent number: 12687666
    Abstract: A reflection plate includes a substrate, an insulation film disposed on the substrate and including projection portions and recesses on an uneven surface, and a reflection film disposed on the uneven surface and having a surface that conforms to the uneven surface and reflecting light. The projection portions are arranged at intervals and are inclined with respect to a normal direction of a surface of the substrate. The recesses are between the projection portions that are adjacent to each other. The projection portions include a first projection portion, a second projection portion, and a third projection portion that are inclined in different directions.
    Type: Grant
    Filed: March 15, 2023
    Date of Patent: July 21, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Yutaka Sawayama, Yoshimasa Chikama, Masamitsu Yamanaka, Hideki Kitagawa
  • Patent number: 12688805
    Abstract: A display device includes a semiconductor chip mounted in a frame region arranged around a display region, and a video protection circuit formed in the frame region, and the video protection circuit includes a low power supply connection portion formed between the semiconductor chip and the display region, and a high power supply connection portion formed under the semiconductor chip.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: July 21, 2026
    Assignee: Sharp Display Technology Corporation
    Inventor: Junichi Yamada
  • Patent number: 12690342
    Abstract: A display device includes a display panel including a base substrate layer, a thin film transistor layer, a light-emitting element layer, and a sealing film, and includes an image capturing unit provided on the base substrate layer side of a display region of the display panel. A plurality of subpixels constituting the display region are divided into a group of normal subpixels provided so as not to overlap with the image capturing unit and a group of thinned-out subpixels provided so as to overlap with the image capturing unit. The inorganic insulating film is provided with openings passing through the inorganic insulating film, in an image capturing region overlapping with the group of thinned-out subpixels.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: July 21, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Takao Saitoh, Yohsuke Kanzaki, Masaki Yamanaka, Masahiko Miwa, Yi Sun, Masaki Fujiwara
  • Patent number: 12690343
    Abstract: A display device includes a thin film transistor layer provided on a base substrate layer. The first thin film transistor includes a first semiconductor layer formed of an oxide semiconductor, a first gate insulating film provided on the first semiconductor layer, a first gate electrode provided on the first gate insulating film, a first interlayer insulating film being a silicon oxide film and configured to cover the first gate electrode, and a second interlayer insulating film being a silicon nitride film provided on the first interlayer insulating film. The second interlayer insulating film is formed with a through-hole passing through the second interlayer insulating film and overlapping all of a first channel region of the first semiconductor layer. A metal coating layer is integrally provided on a surface of the first interlayer insulating film exposed from the through-hole and a surface of a peripheral portion of the through-hole.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: July 21, 2026
    Assignee: Sharp Display Technology Corporation
    Inventor: Shogo Murashige
  • Patent number: 12682863
    Abstract: In a first transition period during which an operation mode transitions from a normal mode to a low power consumption mode, a source driver changes the potential of each source bus line to 0 V, a gate driver sets all gate bus lines to be in a high impedance state in a state where a gate low power source voltage VGL (a potential of a second level: for example, ?7 V) is applied to all of the gate bus lines, and a power source IC sets a common electrode and a VGL line to be in a high impedance state.
    Type: Grant
    Filed: March 29, 2024
    Date of Patent: July 14, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Kaoru Yamamoto, Kohhei Tanaka, Keiichi Yamamoto
  • Patent number: 12685227
    Abstract: A display device includes an active matrix substrate including a plurality of pixels and a driver unit. The driver unit includes a flexible substrate, a first wiring pattern disposed on the flexible substrate, a demultiplexer circuit or a multiplexer circuit supported by the flexible substrate and connected to the first wiring pattern, and a source driver IC supported by the flexible substrate and connected to the first wiring pattern. The driver unit is connected to a display panel, and a TFT of the plurality of pixels and a TFT of the demultiplexer circuit or the multiplexer circuit have semiconductors different from each other.
    Type: Grant
    Filed: October 9, 2023
    Date of Patent: July 14, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Kohhei Tanaka, Kaoru Yamamoto, Keiichi Yamamoto, Ryo Yonebayashi
  • Patent number: 12683277
    Abstract: A phased array antenna with excellent reliability is provided. The phased array antenna includes a printed circuit board 10 including a plurality of first terminals, a TFT substrate 50 including a plurality of second terminals and being arranged to face the printed circuit board 10, and a plurality of conductors 30 connecting the first terminals and the second terminals, respectively. The printed circuit board includes a plurality of transmission/reception electrodes 12, and beamforming ICs 20 receiving control signals from the TFT substrate via the first terminals and controlling phases of signals transmitted/received by transmission/reception electrodes based on the control signals.
    Type: Grant
    Filed: August 22, 2024
    Date of Patent: July 14, 2026
    Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
    Inventors: Hideki Kitagawa, Yoshimasa Chikama, Masamitsu Yamanaka
  • Patent number: 12682864
    Abstract: In a first transition period during which an operation mode transitions from a normal mode to a low power consumption mode, a VCOM generation unit in a power source IC changes a potential of a common electrode drive voltage VCOM from a potential of a first level (for example, 5 V) to a potential of a second level (for example, 12 V) so that a leakage current flowing through a pixel transistor is not generated during a pause period, a gate driver changes a potential of each gate bus line to 0 V, and a source driver changes a potential of each source bus line to 0 V.
    Type: Grant
    Filed: March 29, 2024
    Date of Patent: July 14, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Kaoru Yamamoto, Kohhei Tanaka, Keiichi Yamamoto
  • Patent number: 12676097
    Abstract: A display apparatus includes a power control circuit and a timing control circuit that supplies a timing signal to a level shifter circuit. In response to reception of a control signal used to transition from a display mode to a pause mode from a host controller, the timing control circuit causes the level shifter circuit to stop outputting a gate signal by transmitting a pause signal to the power control circuit and stopping supplying the timing signal to the level shifter circuit. In response to reception of the pause signal, the power control circuit stops supplying at least part of power to be supplied to the display panel and the level shifter circuit while keeping supplying power to the timing control circuit.
    Type: Grant
    Filed: July 19, 2024
    Date of Patent: July 7, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Tatsuya Hayashi, Kohji Saitoh, Kazuhisa Yoshimoto
  • Patent number: 12669732
    Abstract: A liquid crystal display device includes: a source driver; a plurality of source lead lines connecting a plurality of source bus lines at one end to the source driver; and a plurality of capacitance lines each disposed to intersect with the plurality of source bus lines, and connected to a common potential, wherein the plurality of source lead lines include at least one first source lead line and at least one second source lead line that is longer than the first source lead line, the first source lead line is connected to the a first source bus line, and the second source lead line is connected to a second source bus line, and an area in which the second source bus line and one of the plurality of capacitance lines overlap with each other is smaller than an area in which the first source bus line and one of the plurality of capacitance lines overlap with each other.
    Type: Grant
    Filed: April 9, 2024
    Date of Patent: June 30, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Junichi Morinaga, Masahiro Yoshida
  • Patent number: 12669905
    Abstract: A touch sensor includes: a first conductor including a net-like wiring line; and a second conductor adjacent to the first conductor and including a net-like wiring line. At least a part of a boundary portion between the first conductor and the second conductor extends in a first direction, and the net-like wiring line of the first conductor includes a plurality of disconnection points formed such that a disconnection edge intersects the first direction in a plan view.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: June 30, 2026
    Assignee: Sharp Display Technology Corporation
    Inventor: Shinichi Miyazaki
  • Patent number: 12670878
    Abstract: A liquid crystal display device comprises a liquid crystal panel and a control unit configured to drive the liquid crystal panel, wherein the liquid crystal panel includes a first substrate, a liquid crystal layer, and a second substrate, all of which are provided in a stated order, the first substrate includes a first electrode and a second electrode either stacked via a first insulating layer or disposed opposite each other, the second substrate includes a third electrode, the control unit includes a display mode switching unit, a gamma correction table memory unit, a gamma correction unit, and an image data output unit, the display mode switching unit switches between narrow viewing angle mode and wide viewing angle mode by controlling a voltage applied to the third electrode, the gamma correction table memory unit contains gamma correction tables by each of which a gray level is associated with an application voltage to the first electrode and/or the second electrode, the gamma correction unit acquires di
    Type: Grant
    Filed: June 7, 2024
    Date of Patent: June 30, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Akira Hirai, Koji Murata, Takashi Satoh
  • Patent number: 12672463
    Abstract: A display device includes: a display panel including a plurality of light-emitting elements; at least one solar cell receiving light from the plurality of light-emitting elements; and a measuring unit measuring output from the at least one solar cell.
    Type: Grant
    Filed: October 12, 2022
    Date of Patent: June 30, 2026
    Assignee: Sharp Display Technology Corporation
    Inventor: Yuji Tanaka
  • Patent number: 12669733
    Abstract: An active matrix substrate includes: a support substrate; and a plurality of pixels located on the support substrate, in which each of the plurality of pixels includes: a thin film transistor; a first color filter layer; a contact hole provided in the first color filter layer; and a pixel electrode electrically coupled to the thin film transistor through the contact hole, and has a second color filter layer in the contact hole, the plurality of pixels include a first pixel, and in the first pixel, the first color filter layer transmits light in a first wavelength band and the second color filter layer transmits the light in the first wavelength band or transmits either the light in the first wavelength band or another light when a layer for transmitting the other light is provided around the contact hole.
    Type: Grant
    Filed: February 6, 2024
    Date of Patent: June 30, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Seiichi Uchida, Kuniaki Okada, Hiromi Katoh, Keisuke Yoshida
  • Patent number: 12664957
    Abstract: In a unit circuit constituting a shift register, as a constituent element for changing the potential of a node (first control node) connected to the gate terminal of an output control transistor from a high level to a low level, two thin film transistors (a first reset transistor and a second reset transistor) connected in series between the first control node and an input terminal for a low-level DC power supply voltage VSS are provided. A capacitor is provided between the drain terminal and the source terminal of each of the two thin film transistors.
    Type: Grant
    Filed: April 21, 2025
    Date of Patent: June 23, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Masafumi Sugino, Tohru Daitoh, Hajime Imai, Tatsuya Kawasaki, Yohei Takeuchi, Kengo Hara
  • Patent number: 12663678
    Abstract: A display device includes a first substrate having a first surface defined as a display surface and a second surface that is an opposite surface of the first surface, a second substrate disposed opposite the second surface of the first substrate, and a conductive film disposed on the second surface of the first substrate. The display surface is divided into a display area displaying an image and a non-display area displaying no image. The conductive film is disposed to overlap at least the display area and includes synthetic resin material having light transmissive properties.
    Type: Grant
    Filed: October 10, 2024
    Date of Patent: June 23, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Mikihiro Noma, Masayuki Hata, Takatoshi Kira
  • Patent number: 12664951
    Abstract: A display device includes a display panel including a liquid crystal panel and a backlight disposed behind the liquid crystal panel, and a controller configured to control luminance of the backlight. The controller is configured to increase or decrease the luminance of the backlight at a time of switching a refresh rate when an image is displayed on the display panel in accordance with an image signal in such a manner that a change in luminance of the display panel before and after the switching with respect to an image signal having the same gray scale falls within a predetermined range.
    Type: Grant
    Filed: October 10, 2024
    Date of Patent: June 23, 2026
    Assignee: Sharp Display Technology Corporation
    Inventor: Masashi Tsubotani
  • Patent number: 12660423
    Abstract: A display device includes the following: a plurality of first spacers provided at a first pitch that is constant, in a given direction in the display region except where light-emitting elements are provided, the plurality of first spacers having heights that are identical; and n?1 second spacers provided between two of the plurality of first spacers adjacent to each other in the given direction, except where the light-emitting elements are provided, the n?1 second spacers having heights that are smaller than the heights of the plurality of first spacers, where n is a natural number equal to or greater than two. The pitch in the given direction of all spacers including the plurality of first spacers and the n?1 second spacers is a second pitch that is constant, and that is the first pitch divided into n equal parts.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: June 16, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Norio Murofushi, Tohru Sonoda
  • Patent number: 12659449
    Abstract: A stereoscopic display device includes a display panel and a shutter panel. The shutter panel includes a liquid crystal layer, segment electrodes, a counter electrode and an auxiliary electrode that are connected to the ground, an insulating layer, and a shutter panel drive circuit. The shutter panel drive circuit switches a voltage applied to the segment electrodes between a first drive voltage and a ground voltage in synchronization with a switching of a display of the display panel. The auxiliary electrode is arranged on a side opposite to the liquid crystal layer with respect to the counter electrode. The insulating layer is arranged between the counter electrode and the auxiliary electrode.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: June 16, 2026
    Assignee: Sharp Display Technology Corporation
    Inventor: Keiichi Yamamoto
  • Patent number: 12656612
    Abstract: The display device of the present invention includes, in the following order toward a viewer: a display panel; a semi-transparent mirror; a Pancharatnam-Berry lens configured to cause one-handed circularly polarized light incident thereon that is left-handed circularly polarized light or right-handed circularly polarized light to converge while causing opposite-handed circularly polarized light incident thereon to diverge; and a circularly polarized light-selective reflector.
    Type: Grant
    Filed: August 21, 2023
    Date of Patent: June 16, 2026
    Assignee: Sharp Display Technology Corporation
    Inventors: Mattia Signoretto, David James Montgomery, Peter John Roberts, Naru Usukura, Manabu Daio