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:
Jul. 13, 2010
Filed:
Nov. 07, 2005
Applicants:
Sander J. Roosendaal, Geldrop, NL;
Cornelis Van Berkel, Hove, NL;
Inventors:
Sander J. Roosendaal, Geldrop, NL;
Cornelis Van Berkel, Hove, NL;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a display device with a birefringent lens system having cylindrical lenses, extending in a main direction. The polarization of light modulated by a LC layer is twisted by a rotator layer (') in order to be perpendicular or parallel with this main direction. A birefringent compensation layer () is used to remove any ellipticity introduced by the rotator layer (′). This provides improved contrast when the display device is used e.g. in a switchable 2D/3D display.