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:
Jan. 25, 2005
Filed:
Mar. 16, 2002
Wen-chun Wang, Taichung, TW;
Wen-tui Liao, Taichung, TW;
Chien-chung Kuo, Feng-Yuan, TW;
Hsi-rong Han, Taichung Hsien, TW;
Wen-Chun Wang, Taichung, TW;
Wen-Tui Liao, Taichung, TW;
Chien-Chung Kuo, Feng-Yuan, TW;
Hsi-Rong Han, Taichung Hsien, TW;
Windell Corporation, Taichung, TW;
Abstract
The present invention relates to an uniformly active light emitting diode drive circuit. This invention provides a 3T1C circuit structure in the emitting pixel and an additional data capacitors connecting to all the pixels are picked out and located on one side of the display panel. In addition, the connecting lines to the OLED on every pixel are all collected to one end of a transistor Moc on the other side of the display panel. Through the arrangement, it is intended that the aperture ratio of the organic electroluminescent (OLED) device can be largely improved. Moreover, an additional by-pass current transistor in parallel with data capacitor (Cd) in a data generator region outside of the pixel array can by-pass the previous left current in the circuit and thus enhance the contrast ratio of the emitting pixel.