Patents by Inventor Keita SASANUMA

Keita SASANUMA 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: 10838561
    Abstract: A detection apparatus comprising: a first substrate; a detection region having a first detection side extending along a first direction parallel with a surface of the first substrate and a second detection side extending along a second direction intersecting the first direction; a frame region provided outside the detection region and having a first frame region extending along the first detection side and a second frame region extending along the second detection side; a first electrode provided at a position overlapping the detection region of the first substrate, the first electrode extending in the second direction; a second electrode provided at a position overlapping the detection region, the second electrode extending in the first direction; a plurality of terminals provided in the first frame region of the first substrate and arrayed in the first direction, and including a first terminal; a first wire; and a second wire.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 17, 2020
    Assignee: Japan Display Inc.
    Inventors: Chihiro Tanaka, Hayato Kurasawa, Naoki Takada, Toshihiko Tanaka, Tatsuya Wakimoto, Keita Sasanuma, Koji Ishizaki
  • Publication number: 20200301221
    Abstract: According to an aspect, a display device includes: a first substrate; a second substrate facing the first substrate; a display region in which a plurality of pixels are provided; a peripheral region positioned between an edge of the first substrate and the display region; a plurality of scanning lines extending in a first direction; a plurality of signal lines extending in a second direction; a plurality of terminals arranged in the first direction in the peripheral region of the first substrate; a plurality of connection lines that connect the terminals and the signal lines; a plurality of spacers provided between the first substrate and the second substrate in a direction perpendicular to the first substrate; and a plurality of dummy electrodes separated from the connection lines in planar view and provided between the first substrate and the spacers in the direction perpendicular to the first substrate.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 24, 2020
    Inventors: Keita SASANUMA, Masaki KAJIYAMA, Kengo SHIRAGAMI, Naoyuki OBINATA
  • Patent number: 10782547
    Abstract: A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display lines in series, and the counter electrodes also serve as scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: September 22, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshinori Aoki, Keita Sasanuma, Kazune Matsumura
  • Publication number: 20190369451
    Abstract: According to one embodiment, an electric circuit board includes a base material, a first terminal and a second terminal formed on the base material, a first wiring formed on the base material and connected to the first terminal, a second wiring formed on the base material and connected to the second terminal, a resin layer covering the first wiring and the second wiring, and a first pattern formed on the base material, the first terminal and the second terminal being arranged along a first direction, the first pattern being located between the first terminal and the second terminal, and the first pattern overlapping the resin layer in plan view.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 5, 2019
    Applicant: Japan Display Inc.
    Inventors: Keita Sasanuma, Yasushi Nakano, Kengo Shiragami, Takahiro Ochiai
  • Publication number: 20190250444
    Abstract: A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display lines in series, and the counter electrodes also serve as scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 15, 2019
    Inventors: Yoshinori AOKI, Keita SASANUMA, Kazune MATSUMURA
  • Publication number: 20190243484
    Abstract: A detection apparatus comprising: a first substrate; a detection region having a first detection side extending along a first direction parallel with a surface of the first substrate and a second detection side extending along a second direction intersecting the first direction; a frame region provided outside the detection region and having a first frame region extending along the first detection side and a second frame region extending along the second detection side; a first electrode provided at a position overlapping the detection region of the first substrate, the first electrode extending in the second direction; a second electrode provided at a position overlapping the detection region, the second electrode extending in the first direction; a plurality of terminals provided in the first frame region of the first substrate and arrayed in the first direction, and including a first terminal; a first wire; and a second wire.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 8, 2019
    Inventors: Chihiro Tanaka, Hayato Kurasawa, Naoki Takada, Toshihiko Tanaka, Tatsuya Wakimoto, Keita Sasanuma, Koji Ishizaki
  • Publication number: 20190171049
    Abstract: According to one embodiment, a display device includes a first line which is arranged across a display portion, and includes a first end portion and a second end portion located at a non-display portion such that the display portion is located between the first and second end portions, a first switch electrically connected to the first end portion, a second switch electrically connected to the second end portion, a first terminal electrically connected to the first end portion via the first switch, and a second terminal electrically connected to the second end portion via the second switch.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 6, 2019
    Applicant: Japan Display Inc.
    Inventors: Takahiro Ochiai, Hiroshi Inamura, Keita Sasanuma, Kengo Shiragami
  • Patent number: 10302984
    Abstract: A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display liner in series, and the counter electrodes also serve as scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: May 28, 2019
    Assignee: Japan Display Inc.
    Inventors: Yoshinori Aoki, Keita Sasanuma, Kazune Matsumura
  • Patent number: 10168541
    Abstract: A three-dimensional display device prevents a barrier wire breakage failure and includes a parallax barrier panel resistant to static electricity. The 3D display device has a liquid crystal parallax barrier panel disposed over a display panel. The parallax barrier panel has a first substrate having an electrode formed flat thereon and a second substrate having a display area, the first substrate and the second substrate having liquid crystal sandwiched therebetween. The second substrate has barrier electrodes extending in a first direction and arrayed at a first pitch in a second direction, has a first bus electrode extending in the second direction outside the display area along a first side thereof, and has a second bus electrode extending in the second direction outside the display area along a second side thereof opposite to the first side. The barrier electrodes are connected to the first and the second bus electrodes.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 1, 2019
    Assignee: Japan Display Inc.
    Inventors: Takahiro Ochiai, Keita Sasanuma, Syou Yanagisawa, Shinichirou Oka, Kouichi Shirai
  • Patent number: 10120197
    Abstract: A parallax barrier panel including a first substrate having a flat electrode, and a second substrate, the liquid crystal sandwiched therebetween. The second substrate has first barrier electrodes extending in a first direction and arrayed at a first pitch in a second direction, and has second barrier electrodes, the first and the second harrier electrodes having an interlayer insulating film interposed therebetween. Gaps between the first barrier electrodes are blocked by the second barrier electrodes when viewed in a plan view. Each of the first barrier electrodes is paired with one of the second barrier electrodes. Bus electrodes extend outside the display area along a side thereof. The first barrier electrodes are connected to the bus electrodes via first through holes formed in the interlayer insulating film. The second barrier electrodes are connected to the first barrier electrodes via second through holes formed in the interlay insulating film.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 6, 2018
    Assignee: Japan Display Inc.
    Inventors: Takahiro Ochiai, Shinichirou Oka, Keita Sasanuma, Kouichi Shirai
  • Publication number: 20180039119
    Abstract: A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter-electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display liner in series, and the counter electrodes also serve ae scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
    Type: Application
    Filed: August 31, 2017
    Publication date: February 8, 2018
    Inventors: Yoshinori AOKI, Keita Sasanuma, Kazune Matsumura
  • Publication number: 20170363966
    Abstract: The invention provides a display device that allows formation of the boundary of exposure at an arbitrary position on its substrate. A display device includes: a display area; a terminal; and a wire formed between the display area and the terminal and connected to the terminal. The wire includes a first part, a second part, and a third part. The first part extends in a first direction. The second part and the third part extend in a direction different from the first direction. The first part is located between the second and third parts and includes a protruding portion protruding in a second direction perpendicular to the first direction.
    Type: Application
    Filed: June 7, 2017
    Publication date: December 21, 2017
    Inventors: Keita SASANUMA, Hideki KURIYAMA, Kohei HANASAKI, Syou YANAGISAWA, Kentaro AGATA
  • Patent number: 9778501
    Abstract: A second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, the counter electrodes of the respective divided blocks are commonly provided for the respective pixels of the plurality of display lines in series, and the counter electrodes also serve as scanning electrodes of the touch panel, and a counter electrode selector circuit that selects the counter electrodes. The counter electrode selector circuit includes an address decoder circuit that selects the counter electrodes of the respective blocks for a given period, and a selector circuit that applies a touch panel scanning voltage to the counter electrode of the block selected by the address decoder circuit, and applies a counter voltage to the counter electrodes of the blocks not selected by the address decoder circuit.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: October 3, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoshinori Aoki, Keita Sasanuma, Kazune Matsumura
  • Patent number: 9541808
    Abstract: A liquid crystal display device includes a first substrate on which a thin film transistor is formed. The liquid crystal display device includes a first transistor which has a gate electrode thereof formed on a side more remote from the first substrate than a semiconductor layer and has a drain electrode thereof connected to the drain line, a second transistor which is connected to the first transistor in series, and has a source electrode thereof electrically connected to a pixel electrode, and a light blocking layer which is formed between the semiconductor layer and the first substrate and blocks a backlight incident from a first substrate side. The light blocking layer is formed in an overlapping manner on the first transistor, blocks a backlight incident on a first transistor side, and allows a backlight incident on a second transistor side to pass therethrough.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 10, 2017
    Assignee: Japan Display Inc.
    Inventors: Kazune Matsumura, Hideo Sato, Keita Sasanuma
  • Patent number: 9489911
    Abstract: A display device includes a first pixel group and a second pixel group. A central value of positive-side and negative-side grayscale voltages of the first pixel group is set to be a fixed value. A common voltage is adjusted to its optimal value with respect to the first pixel group. A difference between the common voltage adjusted to the optimal value with respect to the first pixel group and an optimal common voltage of the second pixel group is corrected by shifting entire positive-side and negative-side grayscale voltages of the second pixel group in a vertical direction.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: November 8, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoshinori Aoki, Yuji Maede, Keita Sasanuma
  • Publication number: 20160291338
    Abstract: A three-dimensional display device prevents a barrier wire breakage failure and includes a parallax barrier panel resistant to static electricity. The 3D display device has a liquid crystal parallax barrier panel disposed over a display panel. The parallax barrier panel has a first substrate having an electrode formed flat thereon and a second substrate having a display area, the first substrate and the second substrate having liquid crystal sandwiched therebetween. The second substrate has barrier electrodes extending in a first direction and arrayed at a first pitch in a second direction, has a first bus electrode extending in the second direction outside the display area along a first side thereof, and has a second bus electrode extending in the second direction outside the display area along a second side thereof opposite to the first side. The barrier electrodes are connected to the first and the second bus electrodes.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 6, 2016
    Inventors: Takahiro OCHIAI, Keita SASANUMA, Syou YANAGISAWA, Shinichirou OKA, Kouichi SHIRAI
  • Publication number: 20160291337
    Abstract: A parallax barrier panel including a first substrate having a flat electrode, and a second substrate, the liquid crystal sandwiched therebetween. The second substrate has first barrier electrodes extending in a first direction and arrayed at a first pitch in a second direction, and has second barrier electrodes, the first and the second harrier electrodes having an interlayer insulating film interposed therebetween. Gaps between the first barrier electrodes are blocked by the second barrier electrodes when viewed in a plan view. Each of the first barrier electrodes is paired with one of the second barrier electrodes. Bus electrodes extend outside the display area along a side thereof. The first barrier electrodes are connected to the bus electrodes via first through holes formed in the interlayer insulating film. The second barrier electrodes are connected to the first barrier electrodes via second through holes formed in the interlay insulating film.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 6, 2016
    Inventors: Takahiro OCHIAI, Shinichirou OKA, Keita SASANUMA, Kouichi SHIRAI
  • Patent number: 9378710
    Abstract: Provided is a display device capable of improving the display quality by suppressing the influence of a difference in hold voltage in a pixel circuit occurring between forward scanning driving and backward scanning driving. The display device includes: a data signal line; a plurality of pixel circuits; a plurality of gats signal lines; a gate signal line driving circuit for performing any one of forward scanning driving and backward scanning driving and performs gate overlapping driving; a data signal line driving circuit; and a reference voltage line driving circuit for supplying a reference voltage. The reference voltage line driving circuit selects and supplies a reference voltage for forward direction and a reference voltage for reverse direction, during the forward scanning driving and the backward scanning driving, respectively.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: June 28, 2016
    Assignees: JAPAN DISPLAY INC., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Keita Sasanuma, Yoshinori Aoki
  • Publication number: 20160139471
    Abstract: A liquid crystal display device includes a first substrate on which a thin film transistor is formed. The liquid crystal display device includes a first transistor which has a gate electrode thereof formed on a side more remote from the first substrate than a semiconductor layer and has a drain electrode thereof connected to the drain line, a second transistor which is connected to the first transistor in series, and has a source electrode thereof electrically connected to a pixel electrode, and a light blocking layer which is formed between the semiconductor layer and the first substrate and blocks a backlight incident from a first substrate side. The light blocking layer is formed in an overlapping manner on the first transistor, blocks a backlight incident on a first transistor side, and allows a backlight incident on a second transistor side to pass therethrough.
    Type: Application
    Filed: January 21, 2016
    Publication date: May 19, 2016
    Inventors: Kazune MATSUMURA, Hideo SATO, Keita SASANUMA
  • Patent number: 9274391
    Abstract: A liquid crystal display device includes a first substrate on which a thin film transistor is formed. The liquid crystal display device includes a first transistor which has a gate electrode thereof formed on a side more remote from the first substrate than a semiconductor layer and has a drain electrode thereof connected to the drain line, a second transistor which is connected to the first transistor in series, and has a source electrode thereof electrically connected to a pixel electrode, and a light blocking layer which is formed between the semiconductor layer and the first substrate and blocks a backlight incident from a first substrate side. The light blocking layer is formed in an overlapping manner on the first transistor, blocks a backlight incident on a first transistor side, and allows a backlight incident on a second transistor side to pass therethrough.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: March 1, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kazune Matsumura, Hideo Sato, Keita Sasanuma