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. 25, 2003
Filed:
Jun. 28, 2000
Shang-Li Chen, Hsinchu, TW;
Chien-Yu Yi, Taoyuan, TW;
Abstract
A power-saving data driver for stepwisely applying alternating driving voltages with a predetermined number of steps to a plurality of data lines in a liquid crystal display is disclosed. The data driver is comprised of a clocking means, a plurality of reference voltages, and a plurality of analog voltage driver. The clocking means is used for providing clock signals for stepwisely charging and discharging. The plurality of reference voltages work as steps of said stepwisely charging and discharging. The reference voltages are distributed between the system voltage and the ground. Each of the analog voltage driver corresponds to one of the data lines. A given pixel is stepwisely driven from a driving voltage of the last pixel as a beginning voltage to a driving voltage of the given pixel as a target voltage. The reference voltages between the beginning voltage and the target voltage are turned-on in order according to the clock signals generated by the clocking means.