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:
Feb. 07, 2006
Filed:
Dec. 23, 2003
James F. Elman, Fairport, NY (US);
Charles C. Anderson, Penfield, NY (US);
Debasis Majumdar, Rochester, NY (US);
Mridula Nair, Penfield, NY (US);
Roger Yonkoski, Fairport, NY (US);
James F. Elman, Fairport, NY (US);
Charles C. Anderson, Penfield, NY (US);
Debasis Majumdar, Rochester, NY (US);
Mridula Nair, Penfield, NY (US);
Roger Yonkoski, Fairport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Disclosed is a multilayer compensator polymeric film for a LC cell including two or more first type layers having an out-of-plane birefringence not more negative than −0.005 and one or more second type layers having an out-of-plane birefringence more negative than −0.005, wherein the second type layers are amorphous and including selected polymeric materials having sufficient thickness so that the overall in-plane retardation (Re) of the compensator is from 0 to 300 nm and the out-of-plane retardation (Rth) of at least one of the one or more second type layers is more negative than −20 nm wherein: (a) a first type layer is present that is contiguous to a second layer and is between all of the second type layers and all of the other first type layers; (b) at least one of the second type layers or one of the other first type layers is a layer coated from an organic solvent; and (c) the contiguous first type layer contains a polymer that is water soluble or water dispersible in an amount sufficient to impede the diffusion of the organic solvent between the other first type layers and the second type layers.