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:
Jun. 09, 2009
Filed:
Jun. 05, 2007
Michiru Senda, Tokyo, JP;
Ryoichi Yokoyama, Tokyo, JP;
Michiru Senda, Tokyo, JP;
Ryoichi Yokoyama, Tokyo, JP;
Abstract
A liquid crystal display ('LCD') includes a first voltage shift circuit at a front stage of an inverter circuit. The first voltage shift circuit includes a second transistor having a source serving as an input, and a gate and drain connected to each other, and is operated as a diode, and a first transistor having a source connected to a power supply, a gate connected to a ground, and a drain connected to the drain of the second transistor. An input signal shifts voltage by a threshold of the second transistor, and then is input into the inverter circuit. Further, a first condenser is inserted between an input node and the gate of the second transistor. Therefore, the LCD has a level shift circuit with a small circuit area and a rapid response speed.