Patents by Inventor Yoshihiro Sakurai
Yoshihiro 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).
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Publication number: 20240255806Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: ApplicationFiled: April 11, 2024Publication date: August 1, 2024Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
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Patent number: 11982907Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: GrantFiled: January 27, 2023Date of Patent: May 14, 2024Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Publication number: 20240085745Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.Type: ApplicationFiled: November 14, 2023Publication date: March 14, 2024Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
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Patent number: 11852928Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.Type: GrantFiled: January 9, 2023Date of Patent: December 26, 2023Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20230296943Abstract: A liquid crystal display device is provided and includes a substrate; a liquid crystal layer; pixels each having a pixel electrode between the liquid crystal layer and the substrate, and a thin film transistor connected to the pixel electrode; a counter electrode over the pixels; scanning lines each having a longitudinal direction along a first direction; signal lines each having a longitudinal direction along a second direction; and a first protrusion having a convex shape, the first protrusion being a part of the pixel electrode, protruding in one of the first direction and the second direction, and not overlapping the thin film transistor.Type: ApplicationFiled: May 23, 2023Publication date: September 21, 2023Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
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Patent number: 11693281Abstract: A liquid crystal display device including first and second substrates; a liquid crystal layer arranged between the first and second substrates; a plurality of pixel regions each surrounded by a signal line and a scanning line; a counter electrode arranged on the first substrate; and a pixel electrode arranged on the first substrate, the pixel electrode including a plurality of electrode branches, a plurality of slits formed between the electrode branches, and a protrusion protruding in a first direction in which the scanning line extends, wherein at least one of the slits extends in a second direction in which the signal line extends.Type: GrantFiled: June 24, 2019Date of Patent: July 4, 2023Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20230168542Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: ApplicationFiled: January 27, 2023Publication date: June 1, 2023Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
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Publication number: 20230161204Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.Type: ApplicationFiled: January 9, 2023Publication date: May 25, 2023Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
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Patent number: 11567369Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: GrantFiled: June 4, 2021Date of Patent: January 31, 2023Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Patent number: 11550191Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.Type: GrantFiled: September 27, 2019Date of Patent: January 10, 2023Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20210294135Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: ApplicationFiled: June 4, 2021Publication date: September 23, 2021Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
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Patent number: 11029567Abstract: A liquid crystal panel includes pixels arranged in first and second directions and having a pixel region and including: first and second electrodes; and an alignment film having an alignment direction, wherein the first electrode has: a plurality of electrode branches each having first and second ends in the first direction; a slit between adjacent two branches; a first connection connecting the first ends; a second connection connecting the second ends; and a contact hole adjacent to second connection, wherein the first electrode has areas including: a main portion; and a bent portion that is adjacent to the contact hole and that includes the second end, the bent portion being bent relative to main portion at an angle not less than 7 degrees with respect to alignment direction, wherein an area ratio of the bent portion relative to entire area of the pixel region is not more than 50%.Type: GrantFiled: June 3, 2019Date of Patent: June 8, 2021Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Publication number: 20200026132Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.Type: ApplicationFiled: September 27, 2019Publication date: January 23, 2020Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
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Publication number: 20190310526Abstract: A liquid crystal display device including first and second substrates; a liquid crystal layer arranged between the first and second substrates; a plurality of pixel regions each surrounded by a signal line and a scanning line; a counter electrode arranged on the first substrate; and a pixel electrode arranged on the first substrate, the pixel electrode including a plurality of electrode branches, a plurality of slits formed between the electrode branches, and a protrusion protruding in a first direction in which the scanning line extends, wherein at least one of the slits extends in a second direction in which the signal line extends.Type: ApplicationFiled: June 24, 2019Publication date: October 10, 2019Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
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Patent number: 10429705Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.Type: GrantFiled: December 21, 2016Date of Patent: October 1, 2019Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20190293977Abstract: A liquid crystal panel includes pixels arranged in first and second directions and having a pixel region and including: first and second electrodes; and an alignment film having an alignment direction, wherein the first electrode has: a plurality of electrode branches each having first and second ends in the first direction; a slit between adjacent two branches; a first connection connecting the first ends; a second connection connecting the second ends; and a contact hole adjacent to second connection, wherein the first electrode has areas including: a main portion; and a bent portion that is adjacent to the contact hole and that includes the second end, the bent portion being bent relative to main portion at an angle not less than 7 degrees with respect to alignment direction, wherein an area ratio of the bent portion relative to entire area of the pixel region is not more than 50%.Type: ApplicationFiled: June 3, 2019Publication date: September 26, 2019Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
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Patent number: 10330995Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: GrantFiled: October 12, 2017Date of Patent: June 25, 2019Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Patent number: 10310331Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: GrantFiled: April 17, 2018Date of Patent: June 4, 2019Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Publication number: 20180231815Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: ApplicationFiled: April 17, 2018Publication date: August 16, 2018Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Patent number: 9977287Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: GrantFiled: April 28, 2014Date of Patent: May 22, 2018Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito