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:
Oct. 30, 2012
Filed:
Sep. 27, 2004
Guofu Zhou, Eindhoven, NL;
Masaru Yasui, Kobe, JP;
Mark Thomas Johnson, Eindhoven, NL;
Robert Waverly Zehner, Arlington, MA (US);
Karl Raymond Amundson, Cambridge, MA (US);
Guofu Zhou, Eindhoven, NL;
Masaru Yasui, Kobe, JP;
Mark Thomas Johnson, Eindhoven, NL;
Robert Waverly Zehner, Arlington, MA (US);
Karl Raymond Amundson, Cambridge, MA (US);
E Ink Corporation, Cambridge, MA (US);
Abstract
Electrophoretic display units () comprising pixels () situated between common electrodes () and pixel electrodes () need, for shortening the total image update times, increased driving voltages across the pixels () which endanger transistors () coupled to the pixel electrodes (). These increased driving voltage (V) to the common electrode (). To protect the transistors () against these increased driving voltages, a setting signal (S, S) is supplied to the pixel electrode () via the transistor () for reducing a voltage across the pixel () resulting from a transition in the alternating voltage signal (V). During driving frame periods (F) data pulses (D, D, D, D, D, D) are supplied, and during setting frame periods (F), the setting signals (S, S) are supplied.