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:
Mar. 22, 2011
Filed:
Mar. 28, 2007
Yu-wen Chiou, Sinshih Township, TW;
Yu-Wen Chiou, Sinshih Township, TW;
Himax Technologies Limited, Sinshih Township, TW;
Abstract
A pixel circuit has a light emitting diode, a driving transistor, a capacitor, and a first switch. The light emitting diode had a first end to receive a first supply voltage. The driving transistor has a source and drain respectively receiving a second supply voltage and coupled to a second end of the light emitting diode. The capacitor has a first end coupled to a gate of the driving transistor and a second end receiving a reference voltage. The first switch is controlled by a first scan signal to couple the source of the driving transistor to the second end of the capacitor. The pixel circuit operates in a pre-charge period, a programming period, and an emission period sequentially, and the first scan signal is asserted to turn on the first switch during the pre-charge and emission periods.