Patents by Inventor Yoshihisa Ooishi
Yoshihisa Ooishi 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: 10621937Abstract: A display device includes data lines extending in a first direction, gate lines extending in a second direction, a source driver that supplies a data signal to the data lines, a gate driver that supplies a gate signal to the gate lines, and a timing controller that determines scan order of the gate lines and outputs image data to the source driver based on the scan order. The timing controller determines the scan order of the gate lines based on an input image corresponding to input image data input from an outside, and switches first scan order and second scan order in each frame, the first scan order and the second scan order being different from each other in the scan order.Type: GrantFiled: May 18, 2018Date of Patent: April 14, 2020Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Hideyuki Nakanishi, Yoshihisa Ooishi
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Patent number: 10559271Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.Type: GrantFiled: July 2, 2019Date of Patent: February 11, 2020Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Hideyuki Noguchi, Toshiki Onishi, Yoshihisa Ooishi
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Publication number: 20190371221Abstract: A display device comprising: source lines; gate lines; selection transistors in each of which a first conduction electrode is electrically connected to each of the gate lines; selection signal supply lines each electrically connected to the control electrode of at least two of the selection transistors; gate voltage supply lines each connected to the second conduction electrode of at least two of the selection transistors; a gate driver electrically connected to the selection signal supply lines and the gate voltage supply lines; failure detection transistors in each of which a control electrode is electrically connected to each of the gate lines; monitor input signal lines each electrically connected the first conduction electrode of at least two of the failure detection transistors; and monitor output signal lines each electrically connected to the second conduction electrode of at least two of the failure detection transistors.Type: ApplicationFiled: August 16, 2019Publication date: December 5, 2019Inventors: Hiroaki GOTO, Masafumi HIRATA, Nagatoshi KURAHASHI, Yoshihisa OOISHI
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Publication number: 20190325833Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.Type: ApplicationFiled: July 2, 2019Publication date: October 24, 2019Inventors: Hideyuki NOGUCHI, Toshiki ONISHI, Yoshihisa OOISHI
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Patent number: 10453407Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.Type: GrantFiled: July 31, 2018Date of Patent: October 22, 2019Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Yoshihisa Ooishi, Genshiro Kawachi, Kazuo Kita, Toshikazu Koudo, Hideyuki Nakanishi
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Patent number: 10388236Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.Type: GrantFiled: March 29, 2017Date of Patent: August 20, 2019Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Hideyuki Noguchi, Toshiki Onishi, Yoshihisa Ooishi
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Patent number: 10249257Abstract: A display device comprises: data lines extending in a first direction; gate lines extending in a second direction, and being divided into groups each of which has the gate lines adjacent in the first direction; selection signal supplying wirings each of which is provided in each group, and connected to each control electrode of the selector transistors corresponding to the group; gate voltage supplying wirings connected to the other conductive electrode of each of the selector transistors corresponding to the group; and wherein a gate driver supplies a second gate voltage having a voltage level lower than that of a first gate voltage to at least one of the gate voltage supplying wirings in each of the groups before supplying the first gate voltage in order to turn on a pixel transistor disposed in an intersection portion of the data line and the gate line.Type: GrantFiled: September 29, 2016Date of Patent: April 2, 2019Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihisa Ooishi, Daisuke Kajita, Genshiro Kawachi, Sachiko Yamazaki, Kuniaki Amano
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Patent number: 10147375Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.Type: GrantFiled: May 20, 2016Date of Patent: December 4, 2018Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Yoshihisa Ooishi, Genshiro Kawachi, Kazuo Kita, Toshikazu Koudo, Hideyuki Nakanishi
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Publication number: 20180342218Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.Type: ApplicationFiled: July 31, 2018Publication date: November 29, 2018Inventors: Yoshihisa OOISHI, Genshiro KAWACHI, Kazuo KITA, Toshikazu KOUDO, Hideyuki NAKANISHI
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Publication number: 20180268770Abstract: A display device includes data lines extending in a first direction, gate lines extending in a second direction, a source driver that supplies a data signal to the data lines, a gate driver that supplies a gate signal to the gate lines, and a timing controller that determines scan order of the gate lines and outputs image data to the source driver based on the scan order. The timing controller determines the scan order of the gate lines based on an input image corresponding to input image data input from an outside, and switches first scan order and second scan order in each frame, the first scan order and the second scan order being different from each other in the scan order.Type: ApplicationFiled: May 18, 2018Publication date: September 20, 2018Inventors: Hideyuki NAKANISHI, Yoshihisa OOISHI
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Patent number: 10074331Abstract: A display device includes an image display area that includes pixels sectioned by scanning signal lines and video signal lines, first scanning connection lines connected to scanning signal lines, first thin film transistors, first selection signal lines, second thin film transistors, second selection signal lines, and a scanning signal drive circuit connected to the first scanning connection lines, the first selection signal lines, and the second selection signal lines, wherein the scanning signal drive circuit sequentially supplies a pulse signal to the first scanning connection lines in a selection period in which a gate-on voltage is applied to the one of the first selection signal lines, and the scanning signal drive circuit applies a gate-off voltage to the one of the second selection signal lines corresponding to the one of the first selection signal lines to which the gate-on voltage is applied.Type: GrantFiled: May 19, 2016Date of Patent: September 11, 2018Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Genshiro Kawachi, Kazuo Kita, Yoshihisa Ooishi, Hideyuki Nakanishi, Toshikazu Koudo
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Publication number: 20170287420Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.Type: ApplicationFiled: March 29, 2017Publication date: October 5, 2017Inventors: Hideyuki NOGUCHI, Toshiki ONISHI, Yoshihisa OOISHI
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Publication number: 20170092219Abstract: A display device comprises: data lines extending in a first direction; gate lines extending in a second direction, and being divided into groups each of which has the gate lines adjacent in the first direction; selection signal supplying wirings each of which is provided in each group, and connected to each control electrode of the selector transistors corresponding to the group; gate voltage supplying wirings connected to the other conductive electrode of each of the selector transistors corresponding to the group; and wherein a gate driver supplies a second gate voltage having a voltage level lower than that of a first gate voltage to at least one of the gate voltage supplying wirings in each of the groups before supplying the first gate voltage in order to turn on a pixel transistor disposed in an intersection portion of the data line and the gate line.Type: ApplicationFiled: September 29, 2016Publication date: March 30, 2017Inventors: Yoshihisa OOISHI, Daisuke KAJITA, Genshiro KAWACHI, Sachiko YAMAZAKI, Kuniaki AMANO
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Publication number: 20160267866Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.Type: ApplicationFiled: May 20, 2016Publication date: September 15, 2016Inventors: Yoshihisa OOISHI, Genshiro KAWACHI, Kazuo KITA, Toshikazu KOUDO, Hideyuki NAKANISHI
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Publication number: 20160267869Abstract: A display device includes an image display area that includes pixels sectioned by scanning signal lines and video signal lines, first scanning connection lines connected to scanning signal lines, first thin film transistors, first selection signal lines, second thin film transistors, second selection signal lines, and a scanning signal drive circuit connected to the first scanning connection lines, the first selection signal lines, and the second selection signal lines, wherein the scanning signal drive circuit sequentially supplies a pulse signal to the first scanning connection lines in a selection period in which a gate-on voltage is applied to the one of the first selection signal lines, and the scanning signal drive circuit applies a gate-off voltage to the one of the second selection signal lines corresponding to the one of the first selection signal lines to which the gate-on voltage is applied.Type: ApplicationFiled: May 19, 2016Publication date: September 15, 2016Inventors: Genshiro KAWACHI, Kazuo KITA, Yoshihisa OOISHI, Hideyuki NAKANISHI, Toshikazu KOUDO
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Patent number: 9390662Abstract: A liquid crystal display device includes: a liquid crystal display unit that displays, for each of frames, an image based on an input image signal; a drive unit that applies a voltage based on the input image signal to pixels of the liquid crystal display unit; and a control unit that controls an amplitude of the voltage applied to the pixels. The drive unit applies, in one of the frames, a voltage of the same polarity to the pixels connected to one of the source signal lines. The control unit includes: a temperature-information acquiring unit that acquires temperature information of the drive unit; and a filter unit that acquires high-frequency and low-frequency components of the input image signal in a substantial extending direction of the source signal lines. The control unit controls the amplitude of the applied voltage using the temperature information and an output value of the high-frequency component.Type: GrantFiled: December 21, 2012Date of Patent: July 12, 2016Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Takahiro Kobayashi, Yoshio Umeda, Hideki Abe, Takayuki Tajiri, Yoshihisa Ooishi, Shinji Yasukawa
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Patent number: 9251749Abstract: In the case where the gray-scale value of the pixel X is the minimum gray-scale value, the data line driving circuit (4) outputs a video signal having a voltage obtained by correcting the positive polarity minimum gray-scale voltage corresponding to the minimum gray-scale value only when outputting a positive polarity video signal. In the above, the data line driving circuit (4) outputs the video signal having the voltage obtained by correcting the positive polarity minimum gray-scale voltage, using a voltage correction amount larger than that which is used in outputting the video signal having the voltage obtained by correcting the positive polarity gray-scale voltage corresponding to the intermediate gray-scale value.Type: GrantFiled: February 10, 2012Date of Patent: February 2, 2016Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Junichi Maruyama, Ryutaro Oke, Yoshihisa Ooishi
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Patent number: 9236018Abstract: A display device includes a display portion having gate and source signal lines, and a plurality of pixels, a gate driver that outputs gate signals, a source driver that outputs source signals, and a controller that causes the display portion to display an image at a frame frequency. The controller sets the frame frequency to a first frame frequency F1 when the image is a moving picture, and the controller sets the frame frequency to a second frame frequency F2 lower than F1 when the image is a still picture. The gate driver outputs the gate signals to the gate signal lines in an aligned order of gate signal lines in a second direction when the frame frequency is F1, and the gate driver outputs the gate signals to the gate signal lines in different order from the array order when the frame frequency is F2.Type: GrantFiled: February 7, 2014Date of Patent: January 12, 2016Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Hideyuki Nakanishi, Yoshihisa Ooishi, Sachiko Yamazaki
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Liquid crystal display device with correction unit to generate correction gray level signal voltages
Patent number: 9111504Abstract: A liquid crystal display device which includes one image signal line which is connected to a plurality of pixels, a scanning line drive part which outputs an ON voltage to the respective pixels in a predetermined order, and a data line drive part which outputs image signal voltages. The data line drive part outputs a gray level signal voltage corresponding to a gray level value of the pixel as an image signal voltage in a first period, and outputs a correction gray level signal voltage different from the gray level signal voltage as an image signal voltage in a second period which precedes the first period. The liquid crystal display device further includes a control part which generates the correction gray level signal voltage based on the gray level value of the pixel and one or plurality of gray level values of pixels which precede the pixel in order.Type: GrantFiled: April 28, 2014Date of Patent: August 18, 2015Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Yoshihisa Ooishi, Masato Ishii, Junichi Maruyama, Goki Toshima -
Patent number: 9105254Abstract: A data line driving section (6) outputs a video signal voltage for each pixel to a data line (DL) for each predetermined period in order. In outputting a video signal voltage for a pixel, the data line driving section (6) outputs a gradation signal voltage having a voltage corresponding to a gradation value of the pixel as the video signal voltage during a second part of the predetermined period, and outputs a correction gradation signal voltage different from the gradation signal voltage as the video signal voltage during a first part of the predetermined period. A control section (4) changes a relationship between the correction gradation signal voltage and the gradation signal voltage based on a combination of the gradation value of the pixel and a gradation value of a pixel preceding the pixel.Type: GrantFiled: August 26, 2014Date of Patent: August 11, 2015Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Yoshihisa Ooishi, Misa Owa, Junichi Maruyama, Goki Toshima