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:
Sep. 05, 2006
Filed:
Mar. 28, 2001
Yasushi Miyajima, Gifu, JP;
Masayuki Koga, Anpachi-gun, JP;
Yasushi Miyajima, Gifu, JP;
Masayuki Koga, Anpachi-gun, JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
When a gate voltage having a rectangular-shaped pulse is supplied, the voltage of a pixel electrode is pulled down and fluctuated by a fall of the gate voltage due to a parasitic capacitor formed between a gate line and the pixel electrode, i.e. a so-called drop voltage is generated. As the drop voltage depends on a time constant of a change in the gate voltage, it can be diminished by smoothing the falling edge of the gate voltage. This is achieved by, for example, providing a current discharging transistor of a gate driverwith a small channel width to decrease the maximum current value. By utilizing such a gate voltage, a liquid crystal display device with a small drop voltage can be provided, even when the capacitance of the parasitic capacitor is great.