The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2011
Filed:
Nov. 15, 2007
Tsutomu Furuhashi, Yokohama, JP;
Yoshio Oowaki, Mobara, JP;
Takeshi Harayama, Mobara, JP;
Hitachi Displays, Ltd., Chiba-ken, JP;
Abstract
An image line driving circuit has: an n-number of switching elements for sampling a k-number of gradation voltages inputted from outside and then sequentially supplying the gradation voltages to first to (n/k)-th groups of a k-number of image lines; and a shift register circuit for sequentially inputting sampling voltages to first to (n/k)-th groups of a k-number of switching elements to thereby sequentially turn ON the respective groups of a k-number of switching elements. The scanning line driving circuit sequentially supplies selected scanning voltages to an m-number of scanning lines. The image line driving circuit and the scanning line driving circuit are circuits built in a semiconductor chip mounted on the first substrate. A thin-film transistor has a semiconductor layer formed of amorphous silicon. When voltage levels of the k-number of gradation voltages inputted from outside are at 0 to 5V, the selected scanning voltages inputted to the gates of the thin-film transistors are 20V or more.