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.:

US 8405684 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 26, 2013

Filed:

Sep. 23, 2009
Applicant:

Yen-ynn Chou, Taipei County, TW;

Inventor:

Yen-Ynn Chou, Taipei County, TW;

Assignee:

Princeton Technology Corporation, Hsin Tien, Taipei County, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A drive circuit of a carbon nanotube display (CNDP) used to drive at least a pixel of a CNDP is provided, having an output stage and a calibration device. The output stage is coupled to the pixel and controlled by a pixel signal to switch the pixel between a high voltage and a low voltage. The calibration device is coupled between the output stage and the pixel and controlled by a bias to calibrate the equivalent resistance of the calibration device and further calibrate the brightness of the pixel.


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