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:
Feb. 13, 2007
Filed:
Oct. 25, 2004
Jerry Chung, Mountain View, CA (US);
Wanheng Wang, Sunnyvale, CA (US);
Yajuan Chen, Fremont, CA (US);
Wei Yao, Fremont, CA (US);
Jack Hou, Fremont, CA (US);
Li-yang Chu, Brea, CA (US);
Jerry Chung, Mountain View, CA (US);
Wanheng Wang, Sunnyvale, CA (US);
Yajuan Chen, Fremont, CA (US);
Wei Yao, Fremont, CA (US);
Jack Hou, Fremont, CA (US);
Li-Yang Chu, Brea, CA (US);
Sipix Imaging, Inc., Fremont, CA (US);
Abstract
A system and method are disclosed for reducing reverse bias in an electrophoretic display. The system and method include the application of varying levels of voltages across an array of electrophoretic display cells of the electrophoretic display to move the cells towards a stable state in a driving cycle. In addition, the system and method disconnect the voltages from the electrophoretic display cells at a time duration prior to reaching step transitions of the voltages during the driving cycle. Pre-driving approaches apply a first pre-driving voltage at a first polarity to the display cells before driving the display cells with a second driving voltage at a second, opposite polarity. Varying the time duration and amplitude of the pre-driving signals produces further beneficial reduction in reverse bias.