Patents by Inventor Hiraaki KOKAME

Hiraaki KOKAME 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).

  • Publication number: 20210249631
    Abstract: A dam portion (200) includes a wall surface positioned along an edge of the organic film and faces the display area. The substantially rectangular shape is a rectangle including a side along a first direction and a side along a second direction perpendicular to the first direction and including a chamfered portion (210) forming an outline inclined to the first and second directions. The wall surface (200w) includes first partial wall surfaces (200x) along the first direction and second partial wall surfaces (200y) along the second direction. The first partial wall surfaces (200x) have a length that is an integer multiple of a first unit length, and the second partial wall surfaces (200y) have a length that is an integer multiple of a second unit length. In the chamfered portion (210), the first partial wall surfaces (200x) and the second partial wall surfaces (200y) are connected in a zigzag manner.
    Type: Application
    Filed: April 30, 2021
    Publication date: August 12, 2021
    Inventor: Hiraaki KOKAME
  • Patent number: 11031451
    Abstract: An organic EL display device according to an embodiment of the present invention includes: a substrate, a plurality of pixels that are disposed on the substrate, a first inorganic insulating layer that covers the plurality of pixels, a conductive layer that is disposed on a side of the first inorganic insulating layer opposite to the plurality of pixels and covers the plurality of pixels, and a second inorganic insulating layer that is disposed on a side of the conductive layer opposite to the first inorganic insulating layer and covers the plurality of pixels.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: June 8, 2021
    Assignee: Japan Display Inc.
    Inventors: Hiraaki Kokame, Akinori Kamiya
  • Publication number: 20210134919
    Abstract: A display device according to an embodiment of the present invention includes: a substrate, a plurality of pixels on the substrate, a first inorganic insulating layer that covers the plurality of pixels, a conductive layer on the first inorganic insulating layer, and a second inorganic insulating layer that on the conductive layer, the conductive layer being between the first inorganic insulating layer and the second inorganic insulating layer, wherein the first inorganic insulating layer includes an area that is in direct contact with the second inorganic insulating layer, and all of the conductive layer is covered with the first inorganic insulating layer and the second inorganic insulating layer.
    Type: Application
    Filed: January 14, 2021
    Publication date: May 6, 2021
    Applicant: Japan Display Inc.
    Inventors: Hiraaki KOKAME, Akinori KAMIYA
  • Publication number: 20210111369
    Abstract: An organic EL display device according to an embodiment of the present invention includes a substrate on which a display region including a plurality of pixels including an organic EL layer and an external region that surrounds the display region are formed, at least one separating wall that is formed at a part of the external region on the substrate, and an organic layer that covers at least a part of the display region, includes an organic material, and is formed on a display region side of the at least one separating wall. A wall surface of the display region side of the at least one separating wall includes an inclined surface that is inclined toward the display region side as it is extended away from the substrate.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: Japan Display Inc.
    Inventors: Yukio MATSUMOTO, Hiraaki KOKAME
  • Publication number: 20210104703
    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: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Inventor: Hiraaki KOKAME
  • Patent number: 10910591
    Abstract: An organic EL display device according to an embodiment of the present invention includes a substrate on which a display region including a plurality of pixels including an organic EL layer and an external region that surrounds the display region are formed, at least one separating wall that is formed at a part of the external region on the substrate, and an organic layer that covers at least a part of the display region, includes an organic material, and is formed on a display region side of the at least one separating wall. A wall surface of the display region side of the at least one separating wall includes an inclined surface that is inclined toward the display region side as it is extended away from the substrate.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 2, 2021
    Assignee: Japan Display Inc.
    Inventors: Yukio Matsumoto, Hiraaki Kokame
  • Patent number: 10903450
    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: July 6, 2020
    Date of Patent: January 26, 2021
    Assignee: Japan Display Inc.
    Inventor: Hiraaki Kokame
  • Patent number: 10861907
    Abstract: A display device according to an embodiment of the present invention includes: a substrate; a plurality of pixels arranged on the substrate; an insulating layer which covers the plurality of pixels; and a conductive layer which is located at an opposite side of the insulating layer from the plurality of pixels and covers the plurality of pixels.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: December 8, 2020
    Assignee: Japan Display Inc.
    Inventor: Hiraaki Kokame
  • Patent number: 10833133
    Abstract: A display device includes a sealing film covering a display region where an image is displayed, a touch sensor layer configured to detect a touched position of the display region, the touch sensor layer including a first electrode layer that is arranged on the sealing film, a first insulating layer that is formed on the first electrode layer using a material including nitrogen, and a second electrode layer that is arranged over the first insulating layer, an overcoat covering the touch sensor layer, and a polarizing plate being arranged on the overcoat. The touch sensor layer further includes a second insulating layer configured to inhibit a reaction between nitrogen included in the first insulating layer and water included in the overcoat, the second insulating layer being formed between the first insulating layer and the overcoat using a material not including nitrogen.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: November 10, 2020
    Assignee: Japan Display Inc.
    Inventors: Hiroki Ohara, Akinori Kamiya, Hiraaki Kokame
  • Publication number: 20200335724
    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: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Inventor: Hiraaki KOKAME
  • 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
  • Publication number: 20200135812
    Abstract: A display device includes a sealing film covering a display region where an image is displayed, a touch sensor layer configured to detect a touched position of the display region, the touch sensor layer including a first electrode layer that is arranged on the sealing film, a first insulating layer that is formed on the first electrode layer using a material including nitrogen, and a second electrode layer that is arranged over the first insulating layer, an overcoat covering the touch sensor layer, and a polarizing plate being arranged on the overcoat. The touch sensor layer further includes a second insulating layer configured to inhibit a reaction between nitrogen included in the first insulating layer and water included in the overcoat, the second insulating layer being formed between the first insulating layer and the overcoat using a material not including nitrogen.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 30, 2020
    Applicant: Japan Display Inc.
    Inventors: Hiroki OHARA, Akinori KAMIYA, Hiraaki KOKAME
  • Publication number: 20200044005
    Abstract: An organic EL display device according to an embodiment of the present invention includes: a substrate, a plurality of pixels that are disposed on the substrate, a first inorganic insulating layer that covers the plurality of pixels, a conductive layer that is disposed on a side of the first inorganic insulating layer opposite to the plurality of pixels and covers the plurality of pixels, and a second inorganic insulating layer that is disposed on a side of the conductive layer opposite to the first inorganic insulating layer and covers the plurality of pixels.
    Type: Application
    Filed: October 9, 2019
    Publication date: February 6, 2020
    Applicant: Japan Display Inc.
    Inventors: Hiraaki Kokame, Akinori Kamiya
  • Publication number: 20200020882
    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: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Inventor: Hiraaki KOKAME
  • Patent number: 10461277
    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: March 8, 2019
    Date of Patent: October 29, 2019
    Assignee: Japan Display Inc.
    Inventor: Hiraaki Kokame
  • Publication number: 20190326549
    Abstract: A display device includes a plurality of pixels arranged on one surface of a substrate within a display region, each of the plurality of pixels including a light emitting element, a partition wall layer including a first partition wall, a second partition wall and a third partition wall, a sealing layer arranged on the plurality of pixels and the partition wall layer, the sealing layer including a first inorganic insulating layer, an organic insulating layer and a second inorganic insulating layer, a protective layer arranged on the sealing layer, and a plurality of connection terminals exposed from the protective layer. The first partition wall surrounds each of the plurality of pixels, the second partition wall surrounds the display region, the third partition wall surrounds the outside of the second partition wall. A groove part is included between the second partition wall and the third partition wall.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 24, 2019
    Inventors: Hiraaki Kokame, Akinori Kamiya, Naoya Kubota
  • Publication number: 20190207158
    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: Application
    Filed: March 8, 2019
    Publication date: July 4, 2019
    Inventor: Hiraaki KOKAME
  • Patent number: 10290829
    Abstract: A display device is disclosed including an array substrate including a plurality of pixels arranged in a display region, the display region including a planar region and a curved region, and a sealing layer covering the plurality of pixels and arranged across the display region, wherein the sealing layer includes a first organic insulation layer and a second organic insulation layer, a film thickness of the first organic insulation layer is more than a film thickness of the second organic insulation layer in the planar region, a film thickness of the second organic insulation layer is more than a film thickness of the first organic insulation layer in the curved region, and a hardness of the second organic insulation layer is lower than a hardness of the first organic insulation layer.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 14, 2019
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Nagata, Hiraaki Kokame
  • Patent number: 10270060
    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: November 2, 2018
    Date of Patent: April 23, 2019
    Assignee: Japan Display Inc.
    Inventor: Hiraaki Kokame
  • Publication number: 20190074482
    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: Application
    Filed: November 2, 2018
    Publication date: March 7, 2019
    Inventor: Hiraaki KOKAME