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:
Nov. 29, 2005
Filed:
Aug. 24, 2004
Wen-chun Wang, Taichung, TW;
Wen-tui Liao, Taichung, TW;
Ja-fu Tsai, Chiayi, TW;
Wintek Corporation, Taichung, TW;
Abstract
The main circuit of each stage of the high-reliability shift register circuit is composed of transistors, and the turn-on time for the four transistors are only 1˜2 pulse time within one frame time. Transistors construct an inverter circuit which continuously offers a high-level supply voltage that controls activities of transistors so as to continuously offer a low-level supply voltage to the first node and the output terminal such that avoids the first node and the output terminal being in a floating state. Besides, one of the transistor acts as a charging circuit that extends the lifetime of another transistor. This circuit avoids the affection on the behavior of the shift register circuit that is caused by an a-Si (amorphous silicon) TFT under a sustained stress.