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:
Aug. 07, 2012
Filed:
May. 23, 2006
Kim Leong Tan, Santa Rosa, CA (US);
Brett J. Bryars, Santa Rosa, CA (US);
Karen Denise Hendrix, Santa Rosa, CA (US);
David M. Shemo, Windsor, CA (US);
Thomas Mayer, Santa Rosa, CA (US);
Kim Leong Tan, Santa Rosa, CA (US);
Brett J. Bryars, Santa Rosa, CA (US);
Karen Denise Hendrix, Santa Rosa, CA (US);
David M. Shemo, Windsor, CA (US);
Thomas Mayer, Santa Rosa, CA (US);
Other;
Abstract
A C-plate compensator is disclosed for compensating the residual A-plate and C-plate retardance of a reflective liquid crystal on silicon (LCoS) display or a transmissive liquid crystal (LC) display in a projection display system. The C-plate incorporates a form-birefringent coating, whose retardance magnitude can be adjusted by tilting with respect to the display panel (X-Y) plane. The tilted plate is rotated about the Z-axis by a prescribed amount from the slow axis of the display panel. Criteria are described for choosing the tilt and rotation angles such that the contrast of the display system produced by the compensated panel is optimized.