Patents by Inventor Youichi Ooki
Youichi Ooki 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: 10395573Abstract: According to an aspect, a display apparatus includes: a signal line or a scanning line coupled to a plurality of pixels arranged in a display region; a driver that supplies a drive signal via a resistor to the signal line or the scanning line; and an anomaly detector that monitors a response characteristic of a node between the resistor and the signal line or a node between the resistor and the scanning line.Type: GrantFiled: March 21, 2017Date of Patent: August 27, 2019Assignee: Japan Display Inc.Inventors: Youichi Ooki, Hiroki Uchiyama
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Publication number: 20170278441Abstract: According to an aspect, a display apparatus includes: a signal line or a scanning line coupled to a plurality of pixels arranged in a display region; a driver that supplies a drive signal via a resistor to the signal line or the scanning line; and an anomaly detector that monitors a response characteristic of a node between the resistor and the signal line or a node between the resistor and the scanning line.Type: ApplicationFiled: March 21, 2017Publication date: September 28, 2017Inventors: Youichi Ooki, Hiroki Uchiyama
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Patent number: 9111474Abstract: A method of terminating a pair of transmission lines is changed over by terminal setting. Display data is supplied to a master drive circuit and (n?1)-pieces of drive circuits from a host computer via the pair of transmission lines in accordance with a differential serial transmission system. Each drive circuit includes an SELC terminal. When a voltage inputted to the SELC terminal is at a first voltage level, a resistor having a resistance value of Ra is connected between the pair of transmission lines in the master drive circuit thus terminating the pair of transmission lines, and the pair of transmission lines in the slave drive circuits is opened. When the voltage inputted to the SELC terminal is at a second voltage level which differs from the first voltage level, a resistor having a resistance value of (nĂ—Ra) is connected between the pair of transmission lines.Type: GrantFiled: September 28, 2012Date of Patent: August 18, 2015Assignee: JAPAN DISPLAY INC.Inventors: Youichi Ooki, Yoshihiro Kotani
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Publication number: 20150091954Abstract: A liquid crystal display device includes: pixel electrodes to each of which a potential corresponding to a gray-scale value is applied, for a plurality of pixels arranged in a matrix in a display area, via a pixel transistor of each of the pixels; a common electrode forming, in cooperation with the pixel electrode, an electric field to align a liquid crystal composition; a plurality of scanning signal lines each connected in common to gates of the pixel transistors of the plurality of pixels constituting each of a plurality of rows forming the matrix; and a driver circuit setting, after powering on and before displaying an image in the display area, the common electrode into a high impedance state and then setting the scanning signal line to an inactive potential to cut off a source and a drain of the pixel transistor from each other.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Applicant: Japan Display Inc.,Inventors: Takahiro OCHIAI, Yoshinori AOKI, Hideo SATO, Yoshihiro KOTANI, Youichi OOKI
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Patent number: 8144096Abstract: Provided is a drive circuit low in power consumption and high in display quality for a liquid crystal display device that is used in a small-sized portable device. The liquid crystal display device includes liquid crystal display elements and a liquid crystal driving circuit. The liquid crystal driving circuit is mounted to one of the four sides of a liquid crystal display panel, and is capable of outputting two-system counter electrode voltages. A variable resistor circuit having a resistance value which is variably adjusted by a register is used to correct and output a gray scale voltage according to a position of a relevant scanning signal line. Equalization is also performed by short-circuiting two counter electrode signal lines.Type: GrantFiled: March 11, 2009Date of Patent: March 27, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Youichi Ooki, Hiroyuki Takahashi, Shigeo Adachi
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Publication number: 20090231257Abstract: Provided is a drive circuit low in power consumption and high in display quality for a liquid crystal display device that is used in a small-sized portable device. The liquid crystal display device includes liquid crystal display elements and a liquid crystal driving circuit. The liquid crystal driving circuit is mounted to one of the four sides of a liquid crystal display panel, and is capable of outputting two-system counter electrode voltages. A variable resistor circuit having a resistance value which is variably adjusted by a register is used to correct and output a gray scale voltage according to a position of a relevant scanning signal line. Equalization is also performed by short-circuiting two counter electrode signal lines.Type: ApplicationFiled: March 11, 2009Publication date: September 17, 2009Inventors: Youichi Ooki, Hiroyuki Takahashi, Shigeo Adachi
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Publication number: 20070109215Abstract: A display device used in a miniaturized portable equipment is capable of driving two display panels, consisting of main and sub display-panels. The display device includes a main display panel, a sub-display panel and a drive circuit. The drive circuit can simultaneously drive the main display panel and the sub-display panel. Output terminals are provided to the main display panel, and signals are transmitted to the sub-display panel from the output terminals. Further, the drive circuit includes a power source circuit which is capable of outputting proper common voltages to the main display panel and the sub-display panel.Type: ApplicationFiled: January 9, 2007Publication date: May 17, 2007Inventors: Mitsuru Goto, Yuichi Numata, Masato Sawahata, Yoshinori Aoki, Youichi Ooki
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Patent number: 7167141Abstract: A display device used in a miniaturized portable equipment is capable of driving two display panels, consisting of main and sub-display panels. The display device includes a main display panel, a sub-display panel and a drive circuit. The drive circuit can simultaneously drive the main display panel and the sub-display panel. Output terminals are provided to the main display panel, and signals are transmitted to the sub-display panel from the output terminals. Further, the drive circuit includes a power source circuit which is capable of outputting proper common voltages to the main display panel and the sub-display panel.Type: GrantFiled: July 29, 2003Date of Patent: January 23, 2007Assignees: Hitachi Displays, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Mitsuru Goto, Yuichi Numata, Masato Sawahata, Yoshinori Aoki, Youichi Ooki
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Publication number: 20040021616Abstract: The present invention provides a display device used in a miniaturized portable equipment which is capable of driving two display panels consisting of main and sub display panels. The display device includes a main display panel, a sub display panel and a drive circuit. The drive circuit can simultaneously drive the main display panel and the sub display panel. Output terminals are provided to the main display panel and signals are transmitted to the sub display panel from the output terminals. Further, the drive circuit includes a power source circuit which is capable of outputting proper common voltages to the main display panel and the sub display panel.Type: ApplicationFiled: July 29, 2003Publication date: February 5, 2004Inventors: Mitsuru Goto, Yuichi Numata, Masato Sawahata, Yoshinori Aoki, Youichi Ooki