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).
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Patent number: 10861907Abstract: 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: GrantFiled: April 3, 2018Date of Patent: December 8, 2020Assignee: Japan Display Inc.Inventor: Hiraaki Kokame
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Patent number: 10833133Abstract: 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: GrantFiled: October 15, 2019Date of Patent: November 10, 2020Assignee: Japan Display Inc.Inventors: Hiroki Ohara, Akinori Kamiya, Hiraaki Kokame
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Publication number: 20200335724Abstract: 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: ApplicationFiled: July 6, 2020Publication date: October 22, 2020Inventor: Hiraaki KOKAME
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Patent number: 10741790Abstract: 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: GrantFiled: September 25, 2019Date of Patent: August 11, 2020Assignee: Japan Display Inc.Inventor: Hiraaki Kokame
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Publication number: 20200135812Abstract: 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: ApplicationFiled: October 15, 2019Publication date: April 30, 2020Applicant: Japan Display Inc.Inventors: Hiroki OHARA, Akinori KAMIYA, Hiraaki KOKAME
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Publication number: 20200044005Abstract: 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: ApplicationFiled: October 9, 2019Publication date: February 6, 2020Applicant: Japan Display Inc.Inventors: Hiraaki Kokame, Akinori Kamiya
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Publication number: 20200020882Abstract: 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: ApplicationFiled: September 25, 2019Publication date: January 16, 2020Inventor: Hiraaki KOKAME
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Patent number: 10461277Abstract: 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: GrantFiled: March 8, 2019Date of Patent: October 29, 2019Assignee: Japan Display Inc.Inventor: Hiraaki Kokame
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Publication number: 20190326549Abstract: 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: ApplicationFiled: June 26, 2019Publication date: October 24, 2019Inventors: Hiraaki Kokame, Akinori Kamiya, Naoya Kubota
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Publication number: 20190207158Abstract: 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: ApplicationFiled: March 8, 2019Publication date: July 4, 2019Inventor: Hiraaki KOKAME
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Patent number: 10290829Abstract: 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: GrantFiled: December 8, 2016Date of Patent: May 14, 2019Assignee: Japan Display Inc.Inventors: Tetsuya Nagata, Hiraaki Kokame
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Patent number: 10270060Abstract: 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: GrantFiled: November 2, 2018Date of Patent: April 23, 2019Assignee: Japan Display Inc.Inventor: Hiraaki Kokame
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Publication number: 20190074482Abstract: 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: ApplicationFiled: November 2, 2018Publication date: March 7, 2019Inventor: Hiraaki KOKAME
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Patent number: 10147905Abstract: 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: GrantFiled: May 30, 2017Date of Patent: December 4, 2018Assignee: Japan Display Inc.Inventor: Hiraaki Kokame
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Publication number: 20180301517Abstract: 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: ApplicationFiled: April 3, 2018Publication date: October 18, 2018Applicant: Japan Display Inc.Inventor: Hiraaki KOKAME
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Patent number: 10038164Abstract: A method of manufacturing a display device, includes steps of forming a first inorganic film, forming a first organic film so as to cover the first inorganic film, removing a part of the first organic film, forming a second inorganic film so as to cover the first inorganic film and a region of the first organic film that has not been removed in the step of removing the part of the first organic film, forming a second organic film so as to cover the second inorganic film, removing a part of the second organic film, and forming a third inorganic film so as to cover the second inorganic film and a region of the second organic film that has not been removed in the step of removing the part of the second organic film. A thickness of the first organic film is different from that of the second organic film.Type: GrantFiled: May 26, 2017Date of Patent: July 31, 2018Assignee: Japan Display Inc.Inventor: Hiraaki Kokame
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Publication number: 20180090708Abstract: A display device includes a substrate including a display region, a plurality of pixels arranged in the display region, and a sealing layer covering at least the entire display region. The sealing layer includes a first inorganic insulating layer, a first organic insulating layer arranged above the first inorganic insulating layer, a second organic insulating layer arranged above the first organic insulating layer and having a higher moisture permeability than the first organic insulating layer, and a second inorganic insulating layer arranged above the second organic insulating layer.Type: ApplicationFiled: August 21, 2017Publication date: March 29, 2018Inventor: Hiraaki KOKAME
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Patent number: 9929378Abstract: Provided is a highly reliable organic EL display device. The organic EL display device includes a first insulating layer; and a display portion provided on the first insulating layer, the display portion including a plurality of pixels. The display portion includes a light emitting layer included in organic EL elements included in the plurality of pixels, the light emitting layer being extended in the entirety of, and beyond, the display portion. The organic EL display device further includes a first groove enclosing the display portion as seen in a plan view, the first groove being provided in the first insulating layer at a position below the light emitting layer. A second insulating layer covering the first groove may be provided between the first insulating layer and the light emitting layer.Type: GrantFiled: October 17, 2016Date of Patent: March 27, 2018Assignee: Japan Display Inc.Inventors: Hiraaki Kokame, Daisuke Kato
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Publication number: 20180026229Abstract: 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: ApplicationFiled: May 30, 2017Publication date: January 25, 2018Inventor: Hiraaki KOKAME
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Publication number: 20170373274Abstract: A method of manufacturing a display device, includes steps of forming a first inorganic film, forming a first organic film so as to cover the first inorganic film, removing a part of the first organic film, forming a second inorganic film so as to cover the first inorganic film and a region of the first organic film that has not been removed in the step of removing the part of the first organic film, forming a second organic film so as to cover the second inorganic film, removing a part of the second organic film, and forming a third inorganic film so as to cover the second inorganic film and a region of the second organic film that has not been removed in the step of removing the part of the second organic film. A thickness of the first organic film is different from that of the second organic film.Type: ApplicationFiled: May 26, 2017Publication date: December 28, 2017Applicant: Japan Display Inc.Inventor: Hiraaki KOKAME