Patents Assigned to Sharp Display Technology Corporation
  • Patent number: 12243878
    Abstract: An active matrix substrate includes a substrate in which a notch or an aperture is formed, and electrodes. Each electrode includes at least either of: a capacitor forming portion that is arranged in a region other than a bypass region and overlaps with at least one of a plurality of bypass gate lines when viewed in a plan view; and an electrode layer portion that is formed in an electrode layer and that composes a bypass gate line interposed portion together with a source line layer portion formed in a source line layer in the bypass region. The electrode layer portion and the source line layer portion overlap with at least one of the bypass gate lines in the bypass region when viewed in a plan view, and at least one of the bypass gate lines is positioned between the electrode layer portion and the source line layer portion in a normal line direction of the substrate.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: March 4, 2025
    Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
    Inventors: Hikaru Yoshino, Satoshi Horiuchi, Junichi Morinaga
  • Patent number: 12234081
    Abstract: A cell box includes a bottom plate on which an object to be packed is placed, a sidewall formed at a peripheral edge of the bottom plate, and a spacer that is switched between a first state where one end of the spacer protrudes by a first distance from a sidewall toward a side of an accommodation space accommodating the object to be packed, and a second state where the one end does not protrude from the sidewall toward the side of the accommodation space.
    Type: Grant
    Filed: April 23, 2023
    Date of Patent: February 25, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Koji Okuyama
  • Patent number: 12230178
    Abstract: A display device includes: at least one first pixel including a first drive transistor and a first initialization transistor configured to initialize the first drive transistor; at least one second pixel including a second drive transistor and a second initialization transistor configured to initialize the second drive transistor; a first initialization line connected to the first drive transistor via the first initialization transistor; a second initialization line connected to the second drive transistor via the second initialization transistor; and a first temperature detection transistor connected to the second initialization line, the first temperature detection transistor including a gate connected to the first initialization line.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: February 18, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Keiichi Yamamoto
  • Patent number: 12224303
    Abstract: In a manufacturing method of a photoelectric conversion panel, a contact hole CH3 that exposes a part of an upper face of a photodiode and a contact hole CH2 that exposes a source connection electrode are formed in a first flattening film and in inorganic insulating films 105a to 105c, an inorganic insulating film 107 is formed, contact holes CH2a and CH3a are formed in the contact holes CH2 and CH3, respectively, and a bias line and a data line are formed in the contact holes CH2a and CH3a, respectively.
    Type: Grant
    Filed: May 15, 2023
    Date of Patent: February 11, 2025
    Assignee: Sharp Display Technology Corporation
    Inventors: Makoto Nakazawa, Hiroyuki Moriwaki, Rikiya Takita, Tetsuya Tanishima
  • Patent number: 12204719
    Abstract: A touch input device includes M drive lines; N sense lines; (M×N) electrostatic capacitances; and a signal processor configured to output a first drive signal and detect a change in a plurality of electrostatic capacitances of the (M×N) electrostatic capacitances. The signal processor outputs the first drive signal to the at least one first drive line and outputs a second drive signal having a phase opposite to the first drive signal to each of at least two second drive lines. The signal processor outputs the first drive signal and the second drive signal so that a first amplitude total, which is obtained by multiplying an amplitude of the first drive signal by the number of first drive lines, is substantially equal to a second amplitude total, which is obtained by multiplying an amplitude of the second drive signal by the number of second drive lines.
    Type: Grant
    Filed: January 19, 2024
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Kohji Nagasaka
  • Patent number: 12205554
    Abstract: A liquid crystal display apparatus has a three-TFT structure in which each of pixels includes a first liquid crystal capacitor including a first pixel electrode, a second liquid crystal capacitor including a second pixel electrode, a first TFT including a drain electrode connected to the first pixel electrode, a second TFT including a drain electrode connected to the second pixel electrode, and a buffer capacitor including a buffer capacitor electrode connected to the second pixel electrode via a third TFT. In the liquid crystal display apparatus, a configuration is adopted in which a gate scanning signal is independently supplied to a plurality of gate bus lines one by one, and a sub-gate-on pulse is substantially simultaneously applied to the third TFTs belonging to at least two pixel rows.
    Type: Grant
    Filed: April 8, 2024
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Yoshihisa Takahashi
  • Patent number: 12205553
    Abstract: A backlight device includes: a plurality of LED elements arranged in a plurality of regions including a first region and a second region; a plurality of LED drive circuits configured to generate LED drive signals configured to drive the LED elements; a control circuit configured to outputs a vertical synchronization signal and current setting data configured to set luminance of the LED elements; and a time constant circuit that delays the vertical synchronization signal by a predetermined time. The LED drive circuits includes a first LED drive circuit associated with the LED elements in the first region. The time constant circuit includes a first time constant circuit connected to the first LED drive circuit. The first LED drive circuit is configured to receive the current setting data output from the control circuit and receive the first vertical synchronization signal delayed by the first time constant circuit.
    Type: Grant
    Filed: December 8, 2023
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Nariya Kanbara
  • Patent number: 12204711
    Abstract: An attachment is attachable to and detachable from a touch panel of an input device including the touch panel, and supports user operation on the input device by being attached to the touch panel. The attachment includes one or more operation units that receive user operation and transmit the user operation to a corresponding position of the touch panel when attached to the touch panel.
    Type: Grant
    Filed: January 16, 2024
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventors: Takenori Maruyama, Shinji Yamagishi, Takuma Yamamoto, Kazutoshi Kida, Yasuhiro Sugita, Hiroshi Fukushima
  • Patent number: 12204193
    Abstract: A liquid crystal display device includes a first substrate, a liquid crystal layer, a second substrate, a retardation layer, and a polarizer in this order from a back face side, and includes a plurality of pixels arrayed in a matrix shape, in which the first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that are capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film that is in contact with the liquid crystal layer, the second substrate includes a second horizontal alignment film in contact with the liquid crystal layer, the liquid crystal layer has a twist alignment when no voltage is applied, and the retardation layer includes a ?/4 plate, a ?/2 plate, and a positive C plate.
    Type: Grant
    Filed: June 19, 2024
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventors: Shinichi Terashita, Kouichi Watanabe, Takehisa Yoshida, Fumikazu Shimoshikiryoh
  • Patent number: 12204197
    Abstract: A color filter includes a frame portion in which the reflectance of light incident from the transparent substrate side is less than the reflectance of light incident from the overcoat layer side and an opening portion in which the reflectance of light incident from the transparent substrate side is greater than the reflectance of light incident from the overcoat layer side. The color filter satisfies nbc×dbc<?×A2+?×A+?, where nbc is the refractive index of the transparent base coat layer, dbc nm is the film thickness of the transparent base coat layer, and A is the opening ratio of the color filter, and where A, ?, ?, and ? respectively satisfy A=(area of the opening portion)/(area of an active area), ?=436.7×nbc?837.2, ?=?315.8×nbc+523.7, and ?=?358.3×nbc+771.8.
    Type: Grant
    Filed: March 5, 2024
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventors: Yuichi Kawahira, Masahiro Hasegawa, Ryosuke Saigusa, Jianeng Xu, Akira Sakai
  • Patent number: 12204210
    Abstract: A liquid crystal module includes a liquid crystal display panel including a TFT substrate having a main surface including a display region and a non-display region located around the display region, a control device including a rigid substrate and a timing controller mounted on the rigid substrate, and a flexible circuit substrate having one end coupled to a mounting region in the non-display region and the other end coupled to the rigid substrate. The flexible circuit substrate is bent, and the rigid substrate is supported on the TFT substrate in the mounting region.
    Type: Grant
    Filed: December 27, 2023
    Date of Patent: January 21, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Hirofumi Miyamoto
  • Patent number: 12197087
    Abstract: A display device includes an array substrate, a counter substrate facing the array substrate at an interval therebetween, a plurality of pixels constituted by the plurality of pixel electrodes and the plurality of color filters, and a plurality of thin film transistors. The plurality of pixels include a plurality of first pixels each having the highest relative luminous efficiency, a plurality of second pixels each having the lowest relative luminous efficiency, and a plurality of third pixels each having relative luminous efficiency lower than the relative luminous efficiency of the first pixels and higher than the relative luminous efficiency of the second pixels, a plurality of spacers include a plurality of spacers having different overlapping relationships with the thin film transistors being overlapping targets.
    Type: Grant
    Filed: January 11, 2023
    Date of Patent: January 14, 2025
    Assignee: Sharp Display Technology Corporation
    Inventors: Junichi Morinaga, Hikaru Yoshino
  • Patent number: 12198648
    Abstract: A switching control circuit is included in a boost direct current to direct current (DC-DC) converter generating an analog power supply voltage to be supplied to a source driver. The switching control circuit supplies a switching pulse to a control terminal of a switching element varying an inductor current such that an operation mode transitions to a current continuation mode during a first predetermined period that is at least a portion of a time duration that continues from a moment when the operation mode transitions from the current continuation mode to a current discontinuation mode in response to transitioning from an efficient video period to a vertical blanking period to a moment when the vertical blanking period transitions to the effective video period.
    Type: Grant
    Filed: August 2, 2023
    Date of Patent: January 14, 2025
    Assignee: Sharp Display Technology Corporation
    Inventor: Akihiro Masuda
  • Patent number: 12190828
    Abstract: To realize frame narrowing of a display device that uses a display element driven by a current. A second scanning signal line drive circuit configured to drive second scanning signal lines each connected to a control terminal of a writing control transistor is constituted by a shift register composed of unit circuits equal in number to half a number of the second scanning signal lines. Each of the unit circuits included in the shift register collectively drives two of the second scanning signal lines adjacent to each other.
    Type: Grant
    Filed: July 5, 2021
    Date of Patent: January 7, 2025
    Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
    Inventor: Kaoru Yamamoto
  • Patent number: 12174502
    Abstract: A touch panel includes a first portion extending in a first direction within a pixel region, a source driving circuit, an inspection circuit, an input terminal region, and an inspection line extending in the first direction within a frame region. The inspection line is formed in a layer different from a layer where the first portion is formed. The inspection line is connected to the first portion and a second portion via a contact hole between a touch-detecting electrode and the source driving circuit. The second portion crosses the source driving circuit and the inspection circuit in a direction intersecting the first direction.
    Type: Grant
    Filed: January 23, 2024
    Date of Patent: December 24, 2024
    Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
    Inventors: Shige Furuta, Takahiro Yamaguchi, Kohei Hosoyachi, Yuhichiroh Murakami, Kiyohito Itoh
  • Patent number: 12174483
    Abstract: Provided is an optical element including, sequentially from a viewing surface side toward a back surface side: a first polarizer; a negative C plate; a phase difference layer; and a second polarizer. A transmission axis of the first polarizer is parallel to a transmission axis of the second polarizer. The phase difference layer contains anisotropic molecules. In the phase difference layer, a tilt angle of the anisotropic molecules on a viewing surface side in the phase difference layer and a tilt angle of the anisotropic molecules on a back surface side in the phase difference layer are the same as each other and greater than 0°. A slow axis of the phase difference layer, in a case of lying in a tilt direction of the anisotropic molecules, is parallel to or perpendicular to the transmission axis of the first polarizer.
    Type: Grant
    Filed: October 17, 2023
    Date of Patent: December 24, 2024
    Assignee: Sharp Display Technology Corporation
    Inventors: Yuichi Kawahira, Masahiro Hasegawa, Ryosuke Saigusa, Jianeng Xu, Akira Sakai
  • Patent number: 12174501
    Abstract: A liquid crystal display device includes a display area having a plurality of first areas and a plurality of second areas arranged in a matrix in a row direction and a column direction, a plurality of first TFTs each located in one of the plurality of first areas, a plurality of pixel electrodes each located in one of the plurality of first areas, a plurality of transparent electrodes each located in one of the plurality of second areas, a plurality of gate bus lines extending in the row direction and being connected to the plurality of first TFTs, a plurality of source bus lines extending in the column direction and being connected to the plurality of first TFTs, and a plurality of dummy source bus lines each extending in the column direction and being connected to one of the plurality of gate bus lines.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: December 24, 2024
    Assignee: Sharp Display Technology Corporation
    Inventor: Shogo Suzuki
  • Patent number: 12174487
    Abstract: A lighting device includes light sources, a board having a mount surface on which the light sources are arranged, and a reflection member disposed on the mount surface of the board and having a rectangular plan view shape. The reflection member includes insertion holes in each of which at least one of the light sources is disposed and wall portions defining a surface area of the reflection member into reflection areas in a grid. Some of the wall portions surround at least one of the insertion holes. The reflection areas include a first reflection area at a corner portion of the reflection member. The wall portions include one wall portion that is included in the first reflection area and the one wall portion includes a passing portion through which light from one of the light sources that is adjacent to the reflection area via the one wall portion passes.
    Type: Grant
    Filed: February 26, 2024
    Date of Patent: December 24, 2024
    Assignee: Sharp Display Technology Corporation
    Inventors: Hirotoshi Yasunaga, Hisashi Watanabe
  • Patent number: 12174482
    Abstract: Provided is a display device in which warping of a display panel is sufficiently reduced or prevented. The display device includes: a display panel; and a polarizer, the polarizer being provided with at least one notch that extends inward from an outer edge of the polarizer.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: December 24, 2024
    Assignee: Sharp Display Technology Corporation
    Inventors: Ryosuke Saigusa, Akira Sakai, Yuichi Kawahira, Masahiro Hasegawa
  • Patent number: 12174469
    Abstract: Provided is a display device including a backlight; a first liquid crystal panel; a display panel; and a second liquid crystal panel. The first liquid crystal panel includes a first substrate, a first liquid crystal layer containing first liquid crystal molecules, and a second substrate. The second liquid crystal panel includes a third substrate, a second liquid crystal layer containing second liquid crystal molecules, and a fourth substrate. The display device satisfies the following formula: |?3??1|?50°, wherein ?1 represents an azimuthal angle of a director of the first liquid crystal molecules near the first substrate with no voltage applied to the first liquid crystal layer, and 43 represents an azimuthal angle of a director of the second liquid crystal molecules near the third substrate with no voltage applied to the second liquid crystal layer.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: December 24, 2024
    Assignee: Sharp Display Technology Corporation
    Inventors: Koji Murata, Hiroshi Tsuchiya, Atsuko Kanashima, Takashi Satoh, Shinji Shimada