Patents by Inventor Hironao Tanaka
Hironao Tanaka 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: 9025125Abstract: A display device includes a display section, and a light barrier element. The light barrier element includes a pair of substrates, a liquid crystal layer that is provided between the pair of substrates and has a plurality of sub-regions that transmit or block light, and a plurality of spacers provided between the pair of substrates. The plurality of spacers are randomly arranged in part or all of a region in surfaces of the substrates.Type: GrantFiled: February 23, 2012Date of Patent: May 5, 2015Assignee: Japan Display Inc.Inventors: Yuzo Kanari, Hironao Tanaka, Amane Higashi, Harumi Okuno, Masayuki Ito
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Publication number: 20140232973Abstract: 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 28, 2014Publication date: August 21, 2014Applicant: Japan Display West Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Patent number: 8599341Abstract: Disclosed herein is a liquid crystal display device including: a first substrate having a pixel area in which pixels are arranged in a matrix form; a second substrate disposed to be opposed to the first substrate; a liquid crystal layer disposed between the first and second substrates; a conductive section disposed at least on the first of the first and second substrates to apply a voltage to the liquid crystal; an organic film disposed at least over one of the first and second substrates; a sealing area adapted to hold the two substrates of the liquid crystal display device together at the peripheral portions of the first and second substrates; and an organic film-free area which is free from the organic film and extends from the inward side of the outermost end of the sealing area to the outward side of the outer periphery of the pixel area.Type: GrantFiled: December 4, 2008Date of Patent: December 3, 2013Assignee: Japan Display West Inc.Inventors: Yasuhiro Kanaya, Koji Noguchi, Hironao Tanaka, Masumitsu Ino
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Publication number: 20130235289Abstract: A display device includes: pixels corresponding to respective plural colors arranged in matrix, wherein each pixel has a pixel circuit portion in which a circuit for display driving of the pixel is arranged and a pixel opening to be an area obtaining effective display light, the pixel openings of the pixels corresponding to at least one color have an area different from areas of the pixel openings of pixels corresponding to other colors, and the pixel circuit portions in respective pixels are arranged at equal pitches.Type: ApplicationFiled: January 14, 2013Publication date: September 12, 2013Applicant: JAPAN DISPLAY WEST INC.Inventors: Hidemasa Yamaguchi, Hironao Tanaka, Daisuke Ito
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Patent number: 8502940Abstract: Disclosed herein is a display apparatus including a first substrate patterned to create pixel electrodes, a second substrate placed to face the first substrate and a liquid-crystal layer sandwiched by the first and second substrates wherein: one of the first and second substrates is patterned to create color filters each provided for one of a plurality of different colors as color filters each associated with one of the pixel electrodes each included in one of pixels each provided for one of the different colors; each of the pixels each provided for one of the different colors has a pixel area which varies from color to color; and the ratio of the electrode area of any particular one of the pixel electrodes to the pixel area of the pixel that includes the particular pixel electrode varies from color to color.Type: GrantFiled: October 8, 2008Date of Patent: August 6, 2013Assignee: Japan Display West, Inc.Inventors: Hironao Tanaka, Hidemasa Yamaguchi, Yoshihiro Sakurai
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Patent number: 8411232Abstract: A liquid crystal display with a first substrate and a first pixel electrode on the first substrate. The first pixel electrode extends along first and second directions and has a plurality of first pixel electrode strips arranged along a first direction. The display also has a common electrode on the first substrate that is spaced from the pixel electrode along a third direction. In addition, the display has a light shield extending along the second direction and positioned to overlap at least part of an outermost strip of the first pixel electrode along the first direction.Type: GrantFiled: February 4, 2011Date of Patent: April 2, 2013Assignee: Sony CorporationInventors: Takeyuki Tsuruma, Hironao Tanaka, Makoto Watanabe, Hidemasa Yamaguchi, Amane Higashi, Youbun Ito, Yusuke Goto
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Patent number: 8411243Abstract: A display device is provided and includes pixel electrodes, each including a plurality of electrode sections which are arranged parallel to each other. Each electrode section is bent approximately in the middle along its extension direction in plan view. The pixel electrodes include a center connection portion adapted to connect together the electrode sections at their bent portions, and include end connection portions adapted to connect together the electrode sections at their end portions, and include protruding portions each of which is formed by extending the end connection portion in such a manner as to protrude from the arranged electrode sections. The display device also includes a substrate on which the pixel electrodes are arranged, an opposed substrate provided to face the side of the substrate on which the pixel electrodes are formed, and a liquid crystal layer filled and sealed between the substrate and opposed substrate.Type: GrantFiled: March 14, 2012Date of Patent: April 2, 2013Assignee: Sony CorporationInventors: Hironao Tanaka, Yoshihiro Sakurai, Harumi Okuno
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Publication number: 20120236237Abstract: A display device includes a display section, and a light barrier element. The light barrier element includes a pair of substrates, a liquid crystal layer that is provided between the pair of substrates and has a plurality of sub-regions that transmit or block light, and a plurality of spacers provided between the pair of substrates. The plurality of spacers are randomly arranged in part or all of a region in surfaces of the substrates.Type: ApplicationFiled: February 23, 2012Publication date: September 20, 2012Applicant: SONY CORPORATIONInventors: Yuzo Kanari, Hironao Tanaka, Amane Higashi, Harumi Okuno, Masayuki Ito
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Patent number: 8243243Abstract: An embodiment of the invention provides a display device having a common electrode and pixel electrodes disposed in an insulating state on one of a pair of substrates between which a liquid crystal layer is held, in which each of the pixel electrodes includes a plurality of electrode portions disposed in parallel with one another, each of the electrode portions has a flat surface shape in which each of the electrode portions is bent approximately at a central portion in an extension direction, and each of the pixel electrodes also includes a bridge portion through which corresponding ones of the electrode portions are connected to one another in the bending portion.Type: GrantFiled: August 13, 2008Date of Patent: August 14, 2012Assignee: Sony CorporationInventor: Hironao Tanaka
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Publication number: 20120194776Abstract: A display device is provided and includes pixel electrodes, each including a plurality of electrode sections which are arranged parallel to each other. Each electrode section is bent approximately in the middle along its extension direction in plan view. The pixel electrodes include a center connection portion adapted to connect together the electrode sections at their bent portions, and include end connection portions adapted to connect together the electrode sections at their end portions, and include protruding portions each of which is formed by extending the end connection portion in such a manner as to protrude from the arranged electrode sections. The display device also includes a substrate on which the pixel electrodes are arranged, an opposed substrate provided to face the side of the substrate on which the pixel electrodes are formed, and a liquid crystal layer filled and sealed between the substrate and opposed substrate.Type: ApplicationFiled: March 14, 2012Publication date: August 2, 2012Applicant: SONY CORPORATIONInventors: Hironao Tanaka, Yoshihiro Sakurai, Harumi Okuno
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Patent number: 8208112Abstract: A display device is provided and includes pixel electrodes, each of the pixel electrodes including a plurality of electrode sections which are arranged parallel to each other. Each electrode section is bent approximately in the middle along its extension direction in plan view. The pixel electrodes include a center connection portion adapted to connect together the electrode sections at their bent portions, and include end connection portions adapted to connect together the electrode sections at their end portions, and include protruding portions each of which is formed by extending the end connection portion in such a manner as to protrude from the arranged electrode sections. The display device also includes a substrate on which the pixel electrodes are arranged, an opposed substrate provided to face the side of the substrate on which the pixel electrodes are formed, and a liquid crystal layer filled and sealed between the substrate and opposed substrate.Type: GrantFiled: May 18, 2009Date of Patent: June 26, 2012Assignee: Sony CorporationInventors: Hironao Tanaka, Yoshihiro Sakurai, Harumi Okuno
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Patent number: 8184134Abstract: A display apparatus includes a display portion and a control portion, and effects color display depending on image signals for three colors. The control portion includes means 10, into which the image signals for three colors are inputted, for generating a first display signal for determining a brightness of predetermined one color at the display portion and second display signals for determining a hue of other two colors or an intermediary color therebetween at the display portion.Type: GrantFiled: October 21, 2008Date of Patent: May 22, 2012Assignee: Canon Kabushiki KaishaInventors: Yasufumi Asao, Hideo Mori, Kohei Nagayama, Hironao Tanaka, Ryuichiro Isobe
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Patent number: 8134582Abstract: A color display apparatus is of the type wherein a unit pixel is constituted by at least three subpixels including first to third subpixels, and at each subpixel, a medium for changing an optical property depending on a voltage applied thereto is disposed. The color display apparatus includes means for applying a voltage, to each of the first to third subpixels, for changing the optical property of the medium within a brightness change range in which light passing through the medium is changed in brightness and a hue change range in which the light passing through the medium assumes chromatic color and a hue of the chromatic color is changed while including combinations of red and green, red and blue, and green and blue for the first to third subpixels, respectively.Type: GrantFiled: May 13, 2005Date of Patent: March 13, 2012Assignee: Canon Kabushiki KaishaInventors: Yasufumi Asao, Kohei Nagayama, Ryuichiro Isobe, Hideo Mori, Hironao Tanaka, Hiroshi Matsuda
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Patent number: 8064023Abstract: The present invention provides a display apparatus in which destruction of an insulating film by water or water vapor and generation of air bubbles in the display apparatus can be suppressed. The display apparatus includes a display element having a display layer together with a pixel electrode and an opposite electrode, an insulating film in contact with an under face of the pixel electrode and a metal-containing film that contains a metal element, covers an end face of the insulating film, and covers a part of a top face and a part of an under face which continue to the end face of the insulating film.Type: GrantFiled: November 21, 2008Date of Patent: November 22, 2011Assignee: Sony CorporationInventors: Yasuhiro Kanaya, Daiki Nakajima, Yusuke Shimada, Hironao Tanaka
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Patent number: 8049855Abstract: A display device having a common electrode and pixel electrodes disposed in an insulating state on one of a pair of substrates between which a liquid crystal layer is held, in which each of the pixel electrodes includes a plurality of electrode portions disposed in parallel with one another, each of the electrode portions has a flat surface shape in which each of the electrode portions is bent approximately at a central portion in an extension direction, and each of the pixel electrodes also includes a bridge portion through which corresponding ones of the electrode portions are connected to one another in the bending portion.Type: GrantFiled: September 15, 2010Date of Patent: November 1, 2011Assignee: Sony CorporationInventor: Hironao Tanaka
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Patent number: 8031310Abstract: Disclosed herein is a liquid crystal display including substrates, a liquid crystal, an orientation layer, and electrodes. The orientation layer includes a base layer having a principal surface provided with a plurality of grooves in parallel, and a coating film covering the principal surface. The coating film has a horizontally orienting ability to orient in parallel the molecular major axes of the liquid crystal molecules in the condition where no voltage is impressed on the principal surface. The grooves each extend along a predetermined direction, and are arrayed repeatedly at a given pitch along the direction orthogonal to the predetermined direction.Type: GrantFiled: June 13, 2008Date of Patent: October 4, 2011Assignee: Sony CorporationInventors: Masaya Tamaki, Hidemasa Yamaguchi, Hironao Tanaka, Motoharu Nishida
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Publication number: 20110211145Abstract: A liquid crystal display with a first substrate and a first pixel electrode on the first substrate. The first pixel electrode extends along first and second directions and has a plurality of first pixel electrode strips arranged along a first direction. The display also has a common electrode on the first substrate that is spaced from the pixel electrode along a third direction. In addition, the display has a light shield extending along the second direction and positioned to overlap at least part of an outermost strip of the first pixel electrode along the first direction.Type: ApplicationFiled: February 4, 2011Publication date: September 1, 2011Applicant: SONY CORPORATIONInventors: Takeyuki Tsuruma, Hironao Tanaka, Makoto Watanabe, Hidemasa Yamaguchi, Amane Higashi, Youbun Ito, Yusuke Goto
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Patent number: 7920241Abstract: There is provided a liquid crystal display device that includes a liquid crystal layer interposed between a first substrate and a second substrate and has on a first substrate side a common electrode and a pixel electrode for applying an electric field to the liquid crystal layer, the liquid crystal display device including: a plurality of scan lines and a plurality of signal lines; a drive element; a first insulating film; a common electrode; a second insulating film; and a pixel electrode, wherein the common electrode covers the pixel area except a formation area of the contact hole on the first insulating film and at least one of the scan line and the signal line.Type: GrantFiled: February 25, 2008Date of Patent: April 5, 2011Assignee: Sony CorporationInventors: Hironao Tanaka, Koji Noguchi, Yasuhiro Kanaya, Daiki Nakajima, Daisuke Nozu, Masumitsu Ino
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Publication number: 20110012821Abstract: Each of branch portions 62ae of a pixel electrode 62a and inclined portions S1k of data lines S1 extends in a direction different from an x direction and a y direction in a pixel region PA and inclined with respect to the y direction. Further, a liquid crystal layer 203 is orientated in a direction different from the x direction and the y direction in the pixel region PA and inclined with respect to the y direction.Type: ApplicationFiled: March 27, 2009Publication date: January 20, 2011Applicant: SONY CORPORATIONInventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20110001914Abstract: A display device having a common electrode and pixel electrodes disposed in an insulating state on one of a pair of substrates between which a liquid crystal layer is held, in which each of the pixel electrodes includes a plurality of electrode portions disposed in parallel with one another, each of the electrode portions has a flat surface shape in which each of the electrode portions is bent approximately at a central portion in an extension direction, and each of the pixel electrodes also includes a bridge portion through which corresponding ones of the electrode portions are connected to one another in the bending portion.Type: ApplicationFiled: September 15, 2010Publication date: January 6, 2011Applicant: SONY CORPORATIONInventor: Hironao Tanaka