Patents by Inventor Tomokazu Ohtsubo
Tomokazu Ohtsubo 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: 10558068Abstract: A display apparatus capable of preventing wrinkles from occurring on an optical sheet due to thermal expansion, while suppressing damage caused by the movement of the optical sheet when the optical sheet vibrates, is provided. In order to prevent wrinkles from occurring due to thermal expansion while suppressing damage caused by the movement of the optical sheet when the optical sheet vibrates, a clearance between an engaging hole provided in a central engagement flange and the protrusion engaging with the engaging hole is smaller than a clearance between an engaging hole provided in an engagement flange other than the central engagement flange and the protrusion.Type: GrantFiled: August 31, 2015Date of Patent: February 11, 2020Assignee: Sakai Display Products CorporationInventor: Tomokazu Ohtsubo
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Publication number: 20180299722Abstract: A display apparatus capable of preventing wrinkles from occurring on an optical sheet due to thermal expansion, while suppressing damage caused by the movement of the optical sheet when the optical sheet vibrates, is provided. In order to prevent wrinkles from occurring due to thermal expansion while suppressing damage caused by the movement of the optical sheet when the optical sheet vibrates, a clearance between an engaging hole provided in a central engagement flange and the protrusion engaging with the engaging hole is smaller than a clearance between an engaging hole provided in an engagement flange other than the central engagement flange and the protrusion.Type: ApplicationFiled: August 31, 2015Publication date: October 18, 2018Inventor: Tomokazu Ohtsubo
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Patent number: 8614658Abstract: A segmented-pixel liquid crystal display has a plurality of pixels of which each has three sub-pixels 10a-10c, namely one middle and two side sub-pixels, arranged next to one another in the column or row direction. The sub-pixels 10a-10c have different brightness levels when the pixel as a whole is in a given middle halftone state, and the middle sub-pixel 10a has the highest brightness level. This eliminates unnaturalness as is conventionally produced when an image with a straight border is displayed, and further improves the gamma characteristic.Type: GrantFiled: October 4, 2005Date of Patent: December 24, 2013Assignee: Sharp Kabushiki KaishaInventors: Masanori Takeuchi, Tomokazu Ohtsubo, Toshihide Tsubata
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Patent number: 8593582Abstract: An active matrix substrate has a structure that prevents a drain extraction line from breaking without a plurality of active elements such as thin film transistor elements, metal-insulator-metal elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in a large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate includes an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.Type: GrantFiled: August 1, 2011Date of Patent: November 26, 2013Assignee: Sharp Kabushiki KaishaInventors: Ryuji Kurihara, Yuhko Hisada, Toshihide Tsubata, Masanori Takeuchi, Tomokazu Ohtsubo
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Patent number: 8570267Abstract: In one embodiment of the present invention, an active matrix display apparatus includes a screen having a plurality of regions each provided with a gate driver, in each of which plurality of regions scanning lines are driven so as to be sequentially selected by use of timing of a gate clock signal supplied to the gate driver, wherein corresponding ones of the gate clock signals for some of the plurality of regions have respective different pulse widths. Thus, it is possible to realize a display apparatus including a screen having a plurality of regions, in which display apparatus a difference in brightness between ones of some of the plurality of regions can be prevented.Type: GrantFiled: September 9, 2008Date of Patent: October 29, 2013Assignee: Sharp Kabushiki KaishaInventor: Tomokazu Ohtsubo
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Publication number: 20110279764Abstract: An active matrix substrate has a structure that prevents a drain extraction line from breaking without a plurality of active elements such as thin film transistor elements, metal-insulator-metal elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in a large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate includes an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.Type: ApplicationFiled: August 1, 2011Publication date: November 17, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Ryuji KURIHARA, Yuhko HISADA, Toshihide TSUBATA, Masanori TAKEUCHI, Tomokazu OHTSUBO
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Patent number: 8031282Abstract: An active matrix substrate has a structure that prevents a drain extraction line from breaking without a plurality of active elements such as thin film transistor elements, metal-insulator-metal elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in a large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate includes an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.Type: GrantFiled: April 4, 2008Date of Patent: October 4, 2011Assignee: Sharp Kabushiki KaishaInventors: Ryuji Kurihara, Yuhko Hisada, Toshihide Tsubata, Masanori Takeuchi, Tomokazu Ohtsubo
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Publication number: 20100194735Abstract: In one embodiment of the present invention, an active matrix display apparatus includes a screen having a plurality of regions each provided with a gate driver, in each of which plurality of regions scanning lines are driven so as to be sequentially selected by use of timing of a gate clock signal supplied to the gate driver, wherein corresponding ones of the gate clock signals for some of the plurality of regions have respective different pulse widths. Thus, it is possible to realize a display apparatus including a screen having a plurality of regions, in which display apparatus a difference in brightness between ones of some of the plurality of regions can be prevented.Type: ApplicationFiled: September 9, 2008Publication date: August 5, 2010Inventor: Tomokazu Ohtsubo
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Publication number: 20090195488Abstract: A segmented-pixel liquid crystal display has a plurality of pixels of which each has three sub-pixels 10a-10c, namely one middle and two side sub-pixels, arranged next to one another in the column or row direction. The sub-pixels 10a-10c have different brightness levels when the pixel as a whole is in a given middle halftone state, and the middle sub-pixel 10a has the highest brightness level. This eliminates unnaturalness as is conventionally produced when an image with a straight border is displayed, and further improves the gamma characteristic.Type: ApplicationFiled: March 4, 2009Publication date: August 6, 2009Applicant: Sharp Kabushiki KaishaInventors: Masanori Takeuchi, Tomokazu Ohtsubo, Toshihide Tsubata
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Publication number: 20080192161Abstract: An active matrix substrate has a structure that prevents a drain extraction line from breaking without a plurality of active elements such as thin film transistor elements, metal-insulator-metal elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in a large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate includes an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.Type: ApplicationFiled: April 4, 2008Publication date: August 14, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Ryuji KURIHARA, Yuhko HISADA, Toshihide TSUBATA, Masanori TAKEUCHI, Tomokazu OHTSUBO
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Publication number: 20080122772Abstract: A segmented-pixel liquid crystal display has a plurality of pixels of which each has three sub-pixels 10a-10c, namely one middle and two side sub-pixels, arranged next to one another in the column or row direction. The sub-pixels 10a-10c have different brightness levels when the pixel as a whole is in a given middle halftone state, and the middle sub-pixel 10a has the highest brightness level. This eliminates unnaturalness as is conventionally produced when an image with a straight border is displayed, and further improves the gamma characteristic.Type: ApplicationFiled: October 4, 2005Publication date: May 29, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Masanori Takeuchi, Tomokazu Ohtsubo, Toshihide Tsubata
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Patent number: 7375773Abstract: The active matrix substrate of the present invention is an active matrix substrate in which a drain extraction line can be prevented from breaking without a plurality of active elements such as TFT (thin film transistor) elements, MIM (metal-insulator-metal) elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate of the present invention is an active matrix substrate comprising an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.Type: GrantFiled: January 25, 2005Date of Patent: May 20, 2008Assignee: Sharp Kabushiki KaishaInventors: Ryuji Kurihara, Yuhko Hisada, Toshihide Tsubata, Masanori Takeuchi, Tomokazu Ohtsubo
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Publication number: 20050162599Abstract: The active matrix substrate of the present invention is an active matrix substrate in which a drain extraction line can be prevented from breaking without a plurality of active elements such as TFT (thin film transistor) elements, MIM (metal-insulator-metal) elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate of the present invention is an active matrix substrate comprising an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.Type: ApplicationFiled: January 25, 2005Publication date: July 28, 2005Inventors: Ryuji Kurihara, Yuhko Hisada, Toshihide Tsubata, Masanori Takeuchi, Tomokazu Ohtsubo