Patents by Inventor Mika Jikumaru
Mika Jikumaru 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: 10342124Abstract: Provided is a display device or an input/output device in which reflection of outside light is reduced. The display device includes a first substrate and a second substrate. The first substrate includes a first surface. A transistor is over the first surface. The second substrate includes a second surface. A first structure having a projection, a second structure having a projection, a black matrix covering the first structure and the second structure, and a color filter are over the second surface. The first surface faces the second surface. The black matrix has a plurality of projections reflecting the projection of the first structure and the projection of the second structure. A planar shape of the first structure is different from a planar shape of the second structure.Type: GrantFiled: June 10, 2015Date of Patent: July 2, 2019Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mika Jikumaru, Daisuke Kubota, Noriko Miyairi, Takaaki Nagata
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Patent number: 10117331Abstract: Provided is a display device or an input/output device in which reflection of outside light is reduced. The display device includes a first substrate and a second substrate. The first substrate includes a first surface. A transistor is over the first surface. The second substrate includes a second surface. A first structure having a projection, a second structure having a projection, a black matrix covering the first structure and the second structure, and a color filter are over the second surface. The first surface faces the second surface. The black matrix has a plurality of projections reflecting the projection of the first structure and the projection of the second structure. A planar shape of the first structure is different from a planar shape of the second structure.Type: GrantFiled: June 10, 2015Date of Patent: October 30, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mika Jikumaru, Daisuke Kubota, Noriko Miyairi, Takaaki Nagata
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Patent number: 10069114Abstract: In a light-emitting device where reflective electrodes are regularly arranged, occurrence of interference fringes due to reflection of light reflected by the reflective electrode is inhibited. A surface of the reflective electrode of a light-emitting element is provided with a plurality of depressions. The shapes of the plurality of depressions are different from each other and do not have rotational symmetry. Irregularity of the surface shape of the reflective electrode is increased, which inhibits interference of light reflected by the reflective electrode. To form the plurality of depressions in the surface of the reflective electrode, for example, a surface of an insulating layer that is a base of the reflective electrode is made uneven. Reflecting the surface shape of the insulating layer, the reflective electrode has an uneven surface.Type: GrantFiled: February 21, 2017Date of Patent: September 4, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Mika Jikumaru, Yusuke Kubota, Daisuke Kubota, Tetsuji Ishitani, Hideaki Shishido
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Publication number: 20170162830Abstract: In a light-emitting device where reflective electrodes are regularly arranged, occurrence of interference fringes due to reflection of light reflected by the reflective electrode is inhibited. A surface of the reflective electrode of a light-emitting element is provided with a plurality of depressions. The shapes of the plurality of depressions are different from each other and do not have rotational symmetry. Irregularity of the surface shape of the reflective electrode is increased, which inhibits interference of light reflected by the reflective electrode. To form the plurality of depressions in the surface of the reflective electrode, for example, a surface of an insulating layer that is a base of the reflective electrode is made uneven. Reflecting the surface shape of the insulating layer, the reflective electrode has an uneven surface.Type: ApplicationFiled: February 21, 2017Publication date: June 8, 2017Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Mika JIKUMARU, Yusuke KUBOTA, Daisuke KUBOTA, Tetsuji ISHITANI, Hideaki SHISHIDO
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Patent number: 9583739Abstract: In a light-emitting device where reflective electrodes are regularly arranged, occurrence of interference fringes due to reflection of light reflected by the reflective electrode is inhibited. A surface of the reflective electrode of a light-emitting element is provided with a plurality of depressions. The shapes of the plurality of depressions are different from each other and do not have rotational symmetry. Irregularity of the surface shape of the reflective electrode is increased, which inhibits interference of light reflected by the reflective electrode. To form the plurality of depressions in the surface of the reflective electrode, for example, a surface of an insulating layer that is a base of the reflective electrode is made uneven. Reflecting the surface shape of the insulating layer, the reflective electrode has an uneven surface.Type: GrantFiled: April 14, 2014Date of Patent: February 28, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Mika Jikumaru, Yusuke Kubota, Daisuke Kubota, Tetsuji Ishitani, Hideaki Shishido
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Patent number: 9362522Abstract: An object is to improve productivity related to a laser light irradiation step in a bonding technique of substrates using glass frit. A highly airtight sealing structure or a highly airtight light-emitting device, which can be manufactured with high productivity, is provided. When a glass layer by melting glass frit or a sintered body by sintering glass frit is irradiated with laser light, in order to increase the efficiency, a light-absorbing material is attached to a surface of the glass layer. The laser light irradiation is performed on the light-absorbing material and the glass layer. The substrates are fixed with the glass layer therebetween.Type: GrantFiled: October 22, 2013Date of Patent: June 7, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shuji Fukai, Yusuke Kubota, Mika Jikumaru, Takeshi Nishi, Akihisa Shimomura, Yoji Nagano, Daiki Nakamura
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Publication number: 20150362776Abstract: Provided is a display device or an input/output device in which reflection of outside light is reduced. The display device includes a first substrate and a second substrate. The first substrate includes a first surface. A transistor is over the first surface. The second substrate includes a second surface. A first structure having a projection, a second structure having a projection, a black matrix covering the first structure and the second structure, and a color filter are over the second surface. The first surface faces the second surface. The black matrix has a plurality of projections reflecting the projection of the first structure and the projection of the second structure. A planar shape of the first structure is different from a planar shape of the second structure.Type: ApplicationFiled: June 10, 2015Publication date: December 17, 2015Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mika Jikumaru, Daisuke KUBOTA, Noriko MIYAIRI, Takaaki NAGATA
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Publication number: 20140306241Abstract: In a light-emitting device where reflective electrodes are regularly arranged, occurrence of interference fringes due to reflection of light reflected by the reflective electrode is inhibited. A surface of the reflective electrode of a light-emitting element is provided with a plurality of depressions. The shapes of the plurality of depressions are different from each other and do not have rotational symmetry. Irregularity of the surface shape of the reflective electrode is increased, which inhibits interference of light reflected by the reflective electrode. To form the plurality of depressions in the surface of the reflective electrode, for example, a surface of an insulating layer that is a base of the reflective electrode is made uneven. Reflecting the surface shape of the insulating layer, the reflective electrode has an uneven surface.Type: ApplicationFiled: April 14, 2014Publication date: October 16, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Mika Jikumaru, Yusuke Kubota, Daisuke Kubota, Tetsuji Ishitani, Hideaki Shishido
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Publication number: 20140116614Abstract: An object is to improve productivity related to a laser light irradiation step in a bonding technique of substrates using glass frit. A highly airtight sealing structure or a highly airtight light-emitting device, which can be manufactured with high productivity, is provided. When a glass layer by melting glass frit or a sintered body by sintering glass frit is irradiated with laser light, in order to increase the efficiency, a light-absorbing material is attached to a surface of the glass layer. The laser light irradiation is performed on the light-absorbing material and the glass layer. The substrates are fixed with the glass layer therebetween.Type: ApplicationFiled: October 22, 2013Publication date: May 1, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shuji Fukai, Yusuke Kubota, Mika Jikumaru, Takeshi Nishi, Akihisa Shimomura, Yoji Nagano, Daiki Nakamura