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:
Dec. 26, 2006
Filed:
Jul. 01, 2002
Stephen J. Battersby, Haywards Heath, GB;
Stephen J. Battersby, Haywards Heath, GB;
Koninklijke Philips Electronics N. V., Eindhoven, NL;
Abstract
A color liquid crystal display device has an array of display pixels () for modulating input light and an array of associated color filter elements () which comprise electro-optic filtering elements switchable electrically between a color filtering state in which a required color output is produced and a state in which they are substantially transparent to the input light. Such switching can be used beneficially, for example to reduce power consumption by sacrificing full color output and allowing the brightness level of a back light to be decreased in view of the increased optical efficiency of the pixels when the filter elements are in their transparent state, or to improve viewability in the case of a reflective display used in poor ambient lighting.