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. 07, 2004
Filed:
Jun. 12, 2003
Applicant:
Inventor:
Wei-Chieh Hsueh, Tainan, TW;
Assignee:
Toppoly Optoelectronics Corporation, Chu-Nan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 ;
U.S. Cl.
CPC ...
H03M 1/00 ;
Abstract
A data driver for driving pixels in an active matrix organic LED (AMOLED) is provided the data driver includes a plurality of converters configured to convert to analog current signal digital voltage signals in order to drive the pixels to emit light. Each converter has a plurality of current mirror devices configured to generate mirrored current signals by inputting two control signals. Meanwhile, the mirrored current signals can maintain their preciseness even if deviation of the characteristics of the transistors implanted within the current mirror devices occurs during fabricating.