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:
Apr. 07, 2009
Filed:
Sep. 30, 2005
Leonard G. Hale, Cambria, CA (US);
Young J. Chung, Calabasas, CA (US);
William J. Gunning, Iii, Newbury Park, CA (US);
Leonard G. Hale, Cambria, CA (US);
Young J. Chung, Calabasas, CA (US);
William J. Gunning, III, Newbury Park, CA (US);
Teledyne Scientific & Imaging, LLC, Thousand Oaks, CA (US);
Abstract
An anisotropic cross-linked PVA alignment layer for aligning nematic polymeric liquid crystal compensator films, which also provides an out-of-plane retardation. The cross-linked PVA alignment layer, when applied in sufficient thickness functions as both a negative uniaxial C-plate and causes alignment of the nematic liquid crystal molecules. The combination of the retardation provided by the alignment layer and the compensator film deposited on it provides a significant improvement in the contrast and color stability of liquid crystal displays (LCDs) at large viewing angles in which they are used.