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. 14, 2010
Filed:
Jul. 19, 2005
Guofu Zhou, Eindhoven, NL;
Mark Thomas Johnson, Eindhoven, NL;
Jan Van DE Kamer, Heerlen, NL;
Rogier Cortie, Eindhoven, NL;
Mischa Eduard Tanja Nelis, Heerlen, NL;
Guofu Zhou, Eindhoven, NL;
Mark Thomas Johnson, Eindhoven, NL;
Jan Van De Kamer, Heerlen, NL;
Rogier Cortie, Eindhoven, NL;
Mischa Eduard Tanja Nelis, Heerlen, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
Bi-stable electrophoretic display device () having a normal mode and a scrolling mode, in which image transitions are effected by causing the charged particles () to toggle between the intermediate optical states (e.g. grey-to-grey) or between an extreme optical state and an intermediate optical state (e.g. white-to-light grey), with a corresponding short update time t. When the device () enters a scrolling mode in response to a scrolling command from a user, picture elements are first driven to a special scrolling optical. state, after which drive waveforms for scrolling mode are used for fast toggling between two scrolling states. An increased scrolling speed and very short scrolling time can be realized, without adversely affecting image quality during a normal mode.