Patents by Inventor Takehisa Sakurai

Takehisa Sakurai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11508921
    Abstract: Provided is an organic EL display device including a resin substrate layer, a TFT layer provided on the resin substrate layer, and a light-emitting element that is provided on the TFT layer and constitutes a display region. The resin substrate layer includes a first resin layer, an inorganic layer, and a second resin layer, which are provided in that order from a side opposite to the TFT layer. The interior of the first resin layer contains a plurality of air bubbles.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: November 22, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuo Fujita, Yukinobu Nakata, Hiroshi Sugimoto, Takehisa Sakurai, Masaki Fujiwara, Tokuo Yoshida, Shoji Okazaki, Tetsunori Tanaka
  • Patent number: 10923056
    Abstract: An array board includes a display area having a non-rectangular shape, TFTs disposed in the display area, a plurality of gate lines disposed in the display area and connected to the TFTs, a non-display area surrounding the display area, unit circuits disposed in the non-display area and connected to the gate lines, and a block connection line. The unit circuits are linearly arranged in the non-display area to form circuit blocks. The circuit blocks in the non-display area form a gate circuit portion in which at least two of the circuit blocks are away from each other in an oblique direction with respect to an arrangement direction of the unit circuits. The block connection line extends across the circuit blocks in the non-display area. The block connection line is connected to the circuit blocks.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: February 16, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takehisa Sakurai, Kazuhiko Tsuda
  • Publication number: 20210028378
    Abstract: Provided is an organic EL display device including a resin substrate layer, a TFT layer provided on the resin substrate layer, and a light-emitting element that is provided on the TFT layer and constitutes a display region. The resin substrate layer includes a first resin layer, an inorganic layer, and a second resin layer, which are provided in that order from a side opposite to the TFT layer. The interior of the first resin layer contains a plurality of air bubbles.
    Type: Application
    Filed: March 20, 2018
    Publication date: January 28, 2021
    Inventors: TETSUO FUJITA, YUKINOBU NAKATA, HIROSHI SUGIMOTO, TAKEHISA SAKURAI, MASAKI FUJIWARA, TOKUO YOSHIDA, SHOJI OKAZAKI, TETSUNORI TANAKA
  • Patent number: 10269316
    Abstract: Provided is a display device capable of satisfactorily reducing power consumption while suppressing display degradation due to flicker. When an input unit (70) of a host accepts a predetermined input operation performed by a user (4) during pause driving of a liquid crystal display device (2), a check and adjustment process is started. In this check and adjustment process, a counter voltage that is applied to a common electrode of a display unit (100) changes from an optimum value (a value corresponding to a positive-negative balanced state) in accordance with the input operation performed by the user (4).
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 23, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takehisa Sakurai
  • Patent number: 10192501
    Abstract: The present invention provides a liquid crystal display device with excellent display quality in which the color shift is reduced without increasing power consumption.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 29, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takehisa Sakurai
  • Publication number: 20180322837
    Abstract: An array board includes a display area having a non-rectangular shape, TFTs disposed in the display area, a plurality of gate lines disposed in the display area and connected to the TFTs, a non-display area surrounding the display area, unit circuits disposed in the non-display area and connected to the gate lines, and a block connection line. The unit circuits are linearly arranged in the non-display area to form circuit blocks. The circuit blocks in the non-display area form a gate circuit portion in which at least two of the circuit blocks are away from each other in an oblique direction with respect to an arrangement direction of the unit circuits. The block connection line extends across the circuit blocks in the non-display area. The block connection line is connected to the circuit blocks.
    Type: Application
    Filed: November 14, 2016
    Publication date: November 8, 2018
    Inventors: Takehisa SAKURAI, Kazuhiko TSUDA
  • Publication number: 20180267350
    Abstract: A liquid crystal display device includes a first circuit board, a second circuit board, a liquid crystal layer, a light transmitting display area, a memory circuit, a liquid crystal driving voltage applying circuit, and a potential applying trace. The first circuit board includes a light reflecting electrode. The second circuit board includes a common electrode. The light transmitting display area is for transmitting light from an outer side of the first circuit board through the first circuit board. The memory circuit stores data based on a potential at a data signal trace. The liquid crystal driving voltage applying circuit is for adjusting a potential at the light reflecting electrode based on the data stored in the memory circuit. The potential applying trace includes an overlapping portion overlapping the light transmitting display area between the glass substrate and the first insulating film and is electrically connected to the memory circuit.
    Type: Application
    Filed: November 10, 2015
    Publication date: September 20, 2018
    Inventors: Takehisa SAKURAI, Mayuko SAKAMOTO
  • Publication number: 20180108307
    Abstract: The present invention provides a liquid crystal display device with excellent display quality in which the color shift is reduced without increasing power consumption.
    Type: Application
    Filed: April 18, 2016
    Publication date: April 19, 2018
    Inventor: TAKEHISA SAKURAI
  • Publication number: 20180040285
    Abstract: Provided is a display device capable of satisfactorily reducing power consumption while suppressing display degradation due to flicker. When an input unit (70) of a host accepts a predetermined input operation performed by a user (4) during pause driving of a liquid crystal display device (2), a check and adjustment process is started. In this check and adjustment process, a counter voltage that is applied to a common electrode of a display unit (100) changes from an optimum value (a value corresponding to a positive-negative balanced state) in accordance with the input operation performed by the user (4).
    Type: Application
    Filed: August 20, 2015
    Publication date: February 8, 2018
    Inventor: Takehisa SAKURAI
  • Patent number: 9195104
    Abstract: A liquid crystal panel (2) is a vertical alignment type liquid crystal panel using a horizontal electric field driving system which performs display by driving a liquid crystal layer (50) interposed between substrates (10, 20) in a horizontal electric field, each pixel includes three sub-pixels (6R, 6G, and 6B), which are of red, green, and blue, comb-shaped electrodes (14, 15) include a function as a diffraction grating with the comb-shaped electrodes (14, 15) and spaces between the comb-shaped electrodes (14, 15), and pitch distances (D) between electrodes are set such that an optical diffraction efficiency for red wavelength and an optical diffraction efficiency for green wavelength are greater than an optical diffraction efficiency for blue wavelength. Thus, it is possible to provide a liquid crystal panel and a liquid crystal display apparatus having a wide viewing angle with less color change with a simple configuration.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: November 24, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shuichi Kozaki, Takehisa Sakurai, Yosuke Iwata
  • Patent number: 9007284
    Abstract: Picture element electrodes (30) and common electrodes (36) are provided in one of two substrates facing each other. Each picture element (20) has a plurality of sub picture elements (22). In a range in which a signal voltage of an image signal is low, a display is carried out only in a first sub picture element (22a) having narrower electrode spacing, whereas in a range in which the signal voltage of the image signal is high, a display is carried out in both of the first sub picture element (22a) and a second sub picture element (22b) having wider electrode spacing.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: April 14, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takehisa Sakurai, Shuichi Kozaki, Shoichi Ishihara, Masako Nakamura, Mitsuhiro Murata, Tadashi Ohtake
  • Patent number: 8997341
    Abstract: It is an object of the invention to provide a method for producing a substrate for mounting a semiconductor chip, that can reduce bridging and allows excellent wire bondability and solder connection reliability to be obtained, even when forming fine-pitch wirings.
    Type: Grant
    Filed: September 6, 2010
    Date of Patent: April 7, 2015
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yoshinori Ejiri, Kiyoshi Hasegawa, Takehisa Sakurai, Yoshiaki Tsubomatsu
  • Patent number: 8958037
    Abstract: An vertical alignment type liquid crystal display element (10) which controls an orientation of liquid crystal molecules (52) in a liquid crystal layer (50) by use of a transverse electric field so as to carry out display. A CF-side first insulating layer (42a) and a CF-side second insulting layer (42b) which have respective different dielectric constants are provided, within a pixel in a planar view, on or above a CF substrate (24) so that a first electric field region (60) and a second electric field region (62) which differ in shapes of equipotential lines are formed in the pixel due to generation of a transverse electric field.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: February 17, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shoichi Ishihara, Takehisa Sakurai, Shuichi Kozaki, Tadashi Ohtake
  • Patent number: 8947624
    Abstract: A vertical alignment liquid crystal panel based on a transverse electric field drive system is provided which shows few changes in color when looked squarely at. A liquid crystal panel (2) is a vertical alignment liquid crystal panel based on a transverse electric field drive system, which carries out a display by driving, with a transverse electric field, a liquid crystal layer (50) sandwiched between substrates (10, 20), and the substrate (10) is provided with an insulating layer (25) having at least two regions that are different in relative permittivity from each other in a pixel (6) composed of a red subpixel (6R), a green subpixel (6G), and a blue subpixel (6B). Those regions of the insulating layer (25) which correspond to the blue, green, and red subpixel (6B, 6G, 6R) in the liquid crystal panel (2) have relative permittivities of 3, 3 to 7, and 4 to 7, respectively.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 3, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shuichi Kozaki, Shoichi Ishihara, Takehisa Sakurai, Tadashi Ohtake
  • Patent number: 8934075
    Abstract: The present invention provides a liquid crystal display device that can suppress a display defect due to collapse of liquid crystal alignment. The present invention provides a liquid crystal display device comprising a liquid crystal display element including a pair of substrates and a liquid crystal layer hermetically interposed between the pair of substrates, wherein the liquid crystal layer includes a p-type liquid crystal material that is homeotropically aligned with respect to surfaces of the pair of substrates when no voltage is applied; one of the pair of substrates comprises a comb-shaped electrode and a first alignment layer configured to control alignment of the p-type liquid crystal material; the other of the pair of substrates comprises a second alignment layer configured to control alignment of the p-type liquid crystal material; and the first alignment layer has an anchoring energy of not greater than 1.5×10?4 J/m2.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: January 13, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shoichi Ishihara, Takehisa Sakurai, Mitsuhiro Murata, Shuichi Kozaki, Tadashi Ohtake
  • Patent number: 8860916
    Abstract: The present invention provides a liquid crystal display device capable of preventing occurrence of flickers.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: October 14, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shoichi Ishihara, Takehisa Sakurai, Shuichi Kozaki, Toshihiro Matsumoto, Yosuke Iwata
  • Patent number: 8669973
    Abstract: A liquid crystal display element, a liquid crystal display device, and a method for displaying with a liquid crystal display element, wherein picture element electrodes (30) and a common electrode (36) are provided, each of a plurality of sub-picture elements (22) is provided with the common electrode (36) and a corresponding one of the picture element electrodes (30) in such a manner that the sub-picture elements (22) have different distances (a first distance d1 and a second distance d2) between the common electrode (36) and their corresponding ones of the picture element electrodes (30), display in a low gray scale region is carried out by means of a first sub-picture element (22a) that is a sub-picture element (22) in which the distance is short, display in a middle gray scale region is carried out by means of a second sub-picture element (22b) that is a sub-picture element (22) in which the distance is long, and display in a high gray scale region is carried out by means of the first sub-picture element
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: March 11, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takehisa Sakurai, Shuichi Kozaki, Shoichi Ishihara, Masako Nakamura, Mitsuhiro Murata, Tadashi Ohtake
  • Publication number: 20130293818
    Abstract: A liquid crystal panel (2) is a vertical alignment type liquid crystal panel using a horizontal electric field driving system which performs display by driving a liquid crystal layer (50) interposed between substrates (10, 20) in a horizontal electric field, each pixel includes three sub-pixels (6R, 6G, and 6B), which are of red, green, and blue, comb-shaped electrodes (14, 15) include a function as a diffraction grating with the comb-shaped electrodes (14, 15) and spaces between the comb-shaped electrodes (14, 15), and pitch distances (D) between electrodes are set such that an optical diffraction efficiency for red wavelength and an optical diffraction efficiency for green wavelength are greater than an optical diffraction efficiency for blue wavelength. Thus, it is possible to provide a liquid crystal panel and a liquid crystal display apparatus having a wide viewing angle with less color change with a simple configuration.
    Type: Application
    Filed: July 29, 2011
    Publication date: November 7, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shuichi Kozaki, Takehisa Sakurai, Yosuke Iwata
  • Publication number: 20130201434
    Abstract: The present invention provides a liquid crystal display device capable of preventing occurrence of flickers.
    Type: Application
    Filed: October 28, 2010
    Publication date: August 8, 2013
    Inventors: Mitsuhiro Murata, Shoichi Ishihara, Takehisa Sakurai, Shuichi Kozaki, Toshihiro Matsumoto, Yosuki Iwata
  • Publication number: 20130088680
    Abstract: The present invention provides a liquid crystal display panel and a liquid crystal display device which have a high response speed.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 11, 2013
    Inventors: Takehisa Sakurai, Mitsuhiro Murata, Shoichi Ishihara, Shuichi Kozaki, Yosuke Iwata