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:
Jul. 24, 2007
Filed:
Jul. 15, 2003
Li-yi Chen, Nantou Hsien, TW;
Tean-sen Jen, Taoyuan Hsien, TW;
Li-Yi Chen, Nantou Hsien, TW;
Tean-Sen Jen, Taoyuan Hsien, TW;
Hannstar Display Corp., Taipei, TW;
Abstract
A method and apparatus for gray level dynamic switching. The method is applied to driving a display with at least one pixel. In the method of the present invention, a gray level sequence Sis provided. Ssequentially represents two or more desired gray levels G(1), . . . , G(T) of the pixel at consecutive time frames 1, . . . , T and comprises a current gray level G(t) and a previous gray level G(t−1) corresponding to time frames t and t−1, respectively. Then, the pixel is driven with an optimized driving force V(t) to change the pixel forward to a state corresponding to G(t) according to G(t) and G(t−1). In the present invention, the optimized driving voltage V(t) is determined by equations of V(t)=V(t−1)+ODV and V(t)=a×G(m)+b×G(m)+c×G(m)+d, wherein the voltage ODV is a minimum voltage capable of obtaining one gray level transition in a determined response time.