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. 25, 2012
Filed:
Mar. 11, 2008
Wanheng Wang, Pleasanton, CA (US);
Yajuan Chen, Fremont, CA (US);
Robert Sprague, Saratoga, CA (US);
Andrew Ho, Atherton, CA (US);
Hongmei Zang, Sunnyvale, CA (US);
Wanheng Wang, Pleasanton, CA (US);
Yajuan Chen, Fremont, CA (US);
Robert Sprague, Saratoga, CA (US);
Andrew Ho, Atherton, CA (US);
Hongmei Zang, Sunnyvale, CA (US);
SiPix Imaging, Inc., Fremont, CA (US);
Abstract
Driving methods are described for display devices which have one or more dielectric layers in the path of an electric field driving the display. In an embodiment, image uniformity is improved by periodically refreshing, using an intermediate color state, pixels that remain in one color state before and after a change in displaying a first image and a second image, and by applying driving signals using voltage levels and durations that maintain a global DC balance in the display at near zero to avoid contrast reduction and image artifacts in the image.