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, 2007
Filed:
May. 04, 2004
Yongcai Wang, Webster, NY (US);
Janglin Chen, Rochester, NY (US);
Charles C. Anderson, Penfield, NY (US);
Timothy J. Hubert, Hilton, NY (US);
Timothy C. Schunk, Livonia, NY (US);
Richard A. Castle, Webster, NY (US);
Yongcai Wang, Webster, NY (US);
Janglin Chen, Rochester, NY (US);
Charles C. Anderson, Penfield, NY (US);
Timothy J. Hubert, Hilton, NY (US);
Timothy C. Schunk, Livonia, NY (US);
Richard A. Castle, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
The invention generally relates to polymer films used as protective cover sheets for polarizer plates, a method for producing polarizing plates, and a Liquid Crystal Display employing the same. More particularly, the invention relates to a cover sheet composite having a removable, carrier substrate and a cover sheet comprising a low birefringence polymer film and a layer that promotes adhesion to polyvinyl alcohol on the same side of the carrier substrate as the low birefringence polymer film. The guarded cover sheet of the invention is less susceptible to defects due to dirt and abrasion during the manufacture of the cover sheet and polarizer plates. In addition, the cover sheet has excellent adhesion to polyvinyl alcohol-containing dichroic films and eliminates the need to alkali treat the cover sheet prior to lamination to the dichroic films.