Patents by Inventor Yoshihiro Imajo
Yoshihiro Imajo 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).
-
Patent number: 10885865Abstract: A drive circuit includes an output circuit provided in a display panel to output a gate-on voltage and a gate-off voltage to a plurality of gate lines. The plurality of gate lines include first to sixth gate lines sequentially disposed in a scanning direction. A first transistor is put into an on state to electrically connect the first gate line and the third gate line, a second transistor is put into the on state to electrically connect the second gate line and the fourth gate line, the third transistor is put into the on state to electrically connect the third gate line and the fifth gate line, and the fourth transistor is put into the on state to electrically connect the fourth gate line and the sixth gate line, after the output circuit outputs the gate-on voltage to the first to fourth gate line.Type: GrantFiled: February 6, 2020Date of Patent: January 5, 2021Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Kazunori Inoue, Kenta Endo
-
Patent number: 10692457Abstract: A driving circuit including an output circuit that outputs a signal to a lead line electrically connected to a signal line provided in a display panel; and an output transistor that is provided in the output circuit and connected to an output terminal of the output circuit. An on-resistance value of the output transistor is set according to a resistance value of the lead line electrically connected to the output transistor.Type: GrantFiled: January 8, 2018Date of Patent: June 23, 2020Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Masahiro Ishii, Kenta Endo, Tetsuo Fukami
-
Publication number: 20200175937Abstract: A drive circuit includes an output circuit provided in a display panel to output a gate-on voltage and a gate-off voltage to a plurality of gate lines. The plurality of gate lines include first to sixth gate lines sequentially disposed in a scanning direction. A first transistor is put into an on state to electrically connect the first gate line and the third gate line, a second transistor is put into the on state to electrically connect the second gate line and the fourth gate line, the third transistor is put into the on state to electrically connect the third gate line and the fifth gate line, and the fourth transistor is put into the on state to electrically connect the fourth gate line and the sixth gate line, after the output circuit outputs the gate-on voltage to the first to fourth gate line.Type: ApplicationFiled: February 6, 2020Publication date: June 4, 2020Inventors: Yoshihiro IMAJO, Kazunori INOUE, Kenta ENDO
-
Patent number: 10593281Abstract: A drive circuit includes an output circuit provided in a display panel to output a gate-on voltage and a gate-off voltage to a plurality of gate lines. The plurality of gate lines include first to sixth gate lines sequentially disposed in a scanning direction. A first transistor is put into an on state to electrically connect the first gate line and the third gate line, a second transistor is put into the on state to electrically connect the second gate line and the fourth gate line, the third transistor is put into the on state to electrically connect the third gate line and the fifth gate line, and the fourth transistor is put into the on state to electrically connect the fourth gate line and the sixth gate line, after the output circuit outputs the gate-on voltage to the first to fourth gate line.Type: GrantFiled: February 21, 2018Date of Patent: March 17, 2020Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Kazunori Inoue, Kenta Endo
-
Publication number: 20190392762Abstract: A display device comprising: a first substrate; and a first TFT array and a second TFT array that are formed on the first substrate, wherein the first TFT array includes: a plurality of first gate lines extending in a first direction; and a plurality of first source lines extending in a second direction intersecting the first direction, the second TFT array includes: a plurality of second gate lines extending in one of the first direction and the second direction; and a plurality of second source lines extending in the other of the first direction and the second direction, and the first TFT array and the second TFT array are electrically isolated from each other, and disposed adjacent to each other in the first direction.Type: ApplicationFiled: June 17, 2019Publication date: December 26, 2019Inventors: Tetsuya KAWAMURA, Yoshihiro IMAJO
-
Publication number: 20180182341Abstract: A drive circuit includes an output circuit provided in a display panel to output a gate-on voltage and a gate-off voltage to a plurality of gate lines. The plurality of gate lines include first to sixth gate lines sequentially disposed in a scanning direction. A first transistor is put into an on state to electrically connect the first gate line and the third gate line, a second transistor is put into the on state to electrically connect the second gate line and the fourth gate line, the third transistor is put into the on state to electrically connect the third gate line and the fifth gate line, and the fourth transistor is put into the on state to electrically connect the fourth gate line and the sixth gate line, after the output circuit outputs the gate-on voltage to the first to fourth gate line.Type: ApplicationFiled: February 21, 2018Publication date: June 28, 2018Inventors: Yoshihiro IMAJO, Kazunori INOUE, Kenta ENDO
-
Publication number: 20180130438Abstract: A driving circuit including an output circuit that outputs a signal to a lead line electrically connected to a signal line provided in a display panel; and an output transistor that is provided in the output circuit and connected to an output terminal of the output circuit. An on-resistance value of the output transistor is set according to a resistance value of the lead line electrically connected to the output transistor.Type: ApplicationFiled: January 8, 2018Publication date: May 10, 2018Inventors: Yoshihiro IMAJO, Masahiro ISHII, Kenta ENDO, Tetsuo FUKAMI
-
Patent number: 8547318Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: GrantFiled: January 8, 2013Date of Patent: October 1, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shiro Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Publication number: 20130201418Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: ApplicationFiled: January 8, 2013Publication date: August 8, 2013Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.Inventors: Yoshihiro IMAJO, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shido Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Patent number: 8378950Abstract: The present invention provides a display device which displays a black image by periodically inserting the black image, wherein after the display of the black image, a first period in which a video signal different from a video signal for the black image is outputted to video signal lines is made different from a succeeding period in length.Type: GrantFiled: December 10, 2008Date of Patent: February 19, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Kenta Endo, Yoshihiro Imajo, Yoshihisa Ooishi, Ikuko Mori, Shisei Katou
-
Patent number: 8373636Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: GrantFiled: August 28, 2012Date of Patent: February 12, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shiro Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Publication number: 20130002734Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: ApplicationFiled: August 28, 2012Publication date: January 3, 2013Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.Inventors: Yoshihiro Imajo, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shiro Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Patent number: 8279390Abstract: In a display device forming a board for mounting a connector which allows inputting of video data thereon and a board for mounting a display control circuit to be connected to the connector thereon on a surface of a display module opposite to an observation side, the board for mounting the connector thereon and the board for mounting the display control circuit thereon are physically separated from each other and, further, an area of the board for mounting the display control circuit thereon is set smaller than an area of the board for mounting the connector thereon.Type: GrantFiled: June 9, 2009Date of Patent: October 2, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Kazuhiko Yanagawa
-
Patent number: 8279154Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: GrantFiled: April 11, 2012Date of Patent: October 2, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shiro Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Publication number: 20120194577Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: ApplicationFiled: April 11, 2012Publication date: August 2, 2012Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.Inventors: Yoshihiro Imajo, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shiro Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Patent number: 8194203Abstract: A liquid crystal display device is provided with a backlight where there is little inconsistency in the temperature in the fluorescent lamps and which can illuminate the liquid crystal panel well even when the structure is thin.Type: GrantFiled: February 19, 2009Date of Patent: June 5, 2012Assignees: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.Inventors: Yoshifumi Sekiguchi, Naoki Iwasaki, Yoshihiro Imajo
-
Patent number: 8179353Abstract: A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.Type: GrantFiled: April 1, 2008Date of Patent: May 15, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Imajo, Tetsuro Izawa, Kimitoshi Ohgiichi, Hiroshi Okawara, Shiro Ueda, Nobuyuki Ishige, Tetsuya Kawamura, Hisashi Ishino, Fumiaki Komori
-
Publication number: 20110143582Abstract: In a display device forming a board for mounting a connector which allows inputting of video data thereon and a board for mounting a display control circuit to be connected to the connector thereon on a surface of a display module opposite to an observation side, the board for mounting the connector thereon and the board for mounting the display control circuit thereon are physically separated from each other and, further, an area of the board for mounting the display control circuit thereon is set smaller than an area of the board for mounting the connector thereon.Type: ApplicationFiled: February 16, 2011Publication date: June 16, 2011Inventors: Yoshihiro Imajo, Kazuhiko Yanagawa
-
Patent number: 7944526Abstract: A liquid crystal display device having a direct backlight which uses a high-bright light source achieves both of a high efficiency and thin uniformity. In a liquid crystal display device which includes a liquid crystal panel, and a backlight unit which is arranged on a side of the liquid crystal panel opposite to a display screen of the liquid crystal panel, the backlight unit includes a housing, a plurality of light sources arranged in the inside of the housing, and a diffusion plate which is arranged between the plurality of light sources and the liquid crystal panel, the diffusion plate includes a plurality of light blocking regions at positions corresponding to the plurality of respective light sources, and the light blocking region at a center portion of the housing and the light blocking region at an edge portion of the housing exhibits transmissivities different from each other.Type: GrantFiled: March 9, 2010Date of Patent: May 17, 2011Assignees: Hitachi Displays, Ltd., IPS Alpha Technology, Ltd.Inventors: Yoshihiro Imajo, Yoshifumi Sekiguchi, Hitoshi Taniguchi, Ikuo Hiyama
-
Patent number: 7911574Abstract: In a display device forming a board for mounting a connector which allows inputting of video data thereon and a board for mounting a display control circuit to be connected to the connector thereon on a surface of a display module opposite to an observation side, the board for mounting the connector thereon and the board for mounting the display control circuit thereon are physically separated from each other and, further, an area of the board for mounting the display control circuit thereon is set smaller than an area of the board for mounting the connector thereon.Type: GrantFiled: January 23, 2008Date of Patent: March 22, 2011Assignee: Hitachi Displays, Ltd.Inventors: Yoshihiro Imajo, Kazuhiko Yanagawa