Patents by Inventor Hiroyoshi Tsubota
Hiroyoshi Tsubota 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: 20120162161Abstract: A liquid crystal display having: a liquid crystal display panel in which a plurality of pixels are two-dimensionally arranged at intersecting points of gate lines as many as a plurality of rows and signal lines as many as a plurality of columns which are wired in a matrix shape; and a plurality of driver ICs for applying a signal potential to each pixel of the liquid crystal display panel through the signal lines of a plurality of columns, wherein the number of output pins of each of a plurality of driver ICs is set to the measure of the total number of signal lines of a plurality of columns, thereby preventing that a fraction occurs in the signal lines.Type: ApplicationFiled: March 12, 2012Publication date: June 28, 2012Applicant: Sony CorporationInventors: Masumitsu Ino, Hiroyoshi Tsubota, Hiroaki Ichikawa, Shinichi Teraguchi, Taketo Oka, Toru Akutagawa, Toshikazu Maekawa, Yoshiharu Nakajima, Naoshi Goto
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Patent number: 7872708Abstract: The problem to be solved is to suppress image quality degradation caused by polarizers and provide improved light fastness. To solve the above problem, the embodiment of the present invention is a liquid crystal display device. The liquid crystal display device includes a driving-side substrate 1 on which a drive transistor 5, pixel electrode 6 and orientation film are formed. The liquid crystal display device further includes an opposed-side substrate 2 on which an opposed electrode and orientation film are formed. The liquid crystal display device still further includes liquid crystal 4 filled between the pixel electrode 6 of the driving-side substrate 1 and opposed electrode of the opposed-side substrate 2. The liquid crystal display device still further includes a reflective inorganic polarizer 3 formed between the drive transistor 5 and pixel electrode 6 of the driving-side substrate 1.Type: GrantFiled: November 26, 2007Date of Patent: January 18, 2011Assignee: Sony CorporationInventors: Yumiko Tatemori, Hiroyoshi Tsubota, Fumiaki Abe
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Publication number: 20090059104Abstract: The problem to be solved is to suppress image quality degradation caused by polarizers and provide improved light fastness. To solve the above problem, the embodiment of the present invention is a liquid crystal display device. The liquid crystal display device includes a driving-side substrate 1 on which a drive transistor 5, pixel electrode 6 and orientation film are formed. The liquid crystal display device further includes an opposed-side substrate 2 on which an opposed electrode and orientation film are formed. The liquid crystal display device still further includes liquid crystal 4 filled between the pixel electrode 6 of the driving-side substrate 1 and opposed electrode of the opposed-side substrate 2. The liquid crystal display device still further includes a reflective inorganic polarizer 3 formed between the drive transistor 5 and pixel electrode 6 of the driving-side substrate 1.Type: ApplicationFiled: November 26, 2007Publication date: March 5, 2009Applicant: SONY CORPORATIONInventors: Yumiko Tatemori, Hiroyoshi Tsubota, Fumiaki Abe
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Patent number: 6057822Abstract: A liquid crystal display device includes a liquid crystal display device, a vertical scanner, a horizontal scanner, a video driver, a timing generator, and termination means. The liquid crystal panel is provided with pixels arranged in a matrix. The vertical scanner operates in accordance with a first start-pulse signal, and sequentially selects each row of the pixels. The horizontal scanner operates in accordance with a second start-pulse signal, and sequentially writes a video signal to the selected row of the pixels by distributing the video signal to each column of the pixels. The video driver, which is activated in accordance with supply of power, supplies the video signal to the liquid crystal panel. The timing generator, which is activated in accordance with the supply of power, supplies the first start-pulse signal and the second start-pulse signal to the vertical scanner and the horizontal scanner, respectively.Type: GrantFiled: June 6, 1997Date of Patent: May 2, 2000Assignee: Sony CorporationInventor: Hiroyoshi Tsubota
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Patent number: 5936617Abstract: The invention provide a display apparatus of a plural pixel simultaneous driving system wherein sample and hold noise included in a video signal is removed before the video signal is supplied to a display panel. A video signal processing circuit operates in response to a timing signal supplied from an external timing signal source, and delays an input video signal supplied thereto from an external video signal source to produce an output video signal. The video signal processing circuit includes a first sample and hold circuit, a second sample and hold circuit and a differential circuit. The first sample and hold circuit repetitively samples and holds the input video signal in response to the timing signal. The second sample and hold circuit repetitively samples and holds a predetermined reference signal in response to the same timing signal.Type: GrantFiled: April 3, 1996Date of Patent: August 10, 1999Assignee: Sony CorporationInventors: Katsuhide Uchino, Toshikazu Maekawa, Yoshiharu Nakajima, Hiroyoshi Tsubota
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Patent number: 5818413Abstract: A display apparatus comprises arrayed pixels, a vertical-scanning circuit, and a horizontal-scanning circuit. The vertical-scanning circuit outputs selection pulses one after another to sequentially scan pixels in one vertical-scanning period in units of lines. The horizontal-scanning circuit sends and writes a video signal into the pixel line selected by the sequential scanning in one horizontal-scanning period. The vertical-scanning circuit is provided with a switching section to control the consecutive outputs of the selection pulses and to adjust the number of pixel lines to be selected in one horizontal period according to the specification of the video signal used. This configuration enables both noninterlaced drive and interlaced drive.Type: GrantFiled: February 26, 1996Date of Patent: October 6, 1998Assignee: Sony CorporationInventors: Yuji Hayashi, Hiroaki Ichikawa, Masayuki Iida, Hiroyoshi Tsubota
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Patent number: 5617230Abstract: A color liquid crystal display device comprising light shielding layers and color filters on the inner surface of a cell, wherein similar light shielding layers and color filters are disposed also in a peripheral region outside of a display region which is equipped with groups of striped row and column electrodes opposed mutually to form pixels for display. The respective patterns of the light shielding layers and the color filters are the same in both the display region and the peripheral region. A liquid crystal layer formed in the display device has a twist angle of 160.degree. to 300.degree., and a retardation compensator composed of a film is superposed on such layer so as to compensate the elliptical polarization. And a non-selective voltage is applied continuously to the scanning electrodes in the peripheral region so as to maintain the peripheral pixels in a light-shielded state, thereby rendering the display easier to be seen.Type: GrantFiled: August 9, 1994Date of Patent: April 1, 1997Assignee: Asahi Glass Company Ltd.Inventors: Masao Ohgawara, Hiroyoshi Tsubota
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Patent number: 5365357Abstract: A color liquid crystal display device comprising light shielding layers and color filters on the inner surface of a cell, wherein similar light shielding layers and color filters are disposed also in a peripheral region outside of a display region which is equipped with groups of striped row and column electrodes opposed mutually to form pixels for display. The respective patterns of the light shielding layers and the color filters are the same in both the display region and the peripheral region. A liquid crystal layer formed in the display device has a twist angle of 160.degree. to 300.degree. and a retardation compensator composed of a film is superposed on such layer so as to compensate the elliptical polarization. And a non-selective voltage is applied continuously to the scanning electrodes in the peripheral region so as to maintain the peripheral pixels in a light-shielded state, thereby rendering the display easier to be seen.Type: GrantFiled: May 24, 1993Date of Patent: November 15, 1994Assignee: Asahi Glass Company Ltd.Inventors: Masao Ohgawara, Hiroyoshi Tsubota