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:
Jan. 30, 2007
Filed:
May. 09, 2003
Jeong Su Yu, Daejon, KR;
Moon Soo Park, Daejon, KR;
Byoung Kun Jeon, Chungcheongnam-do, KR;
Karl Skjonnemand, Southampton, GB;
Kim Slaney, Dorset, GB;
Mark Verrall, Salisbury, GB;
Jeong Su Yu, Daejon, KR;
Moon Soo Park, Daejon, KR;
Byoung Kun Jeon, Chungcheongnam-do, KR;
Karl Skjonnemand, Southampton, GB;
Kim Slaney, Dorset, GB;
Mark Verrall, Salisbury, GB;
Merck Patent GmbH, Darmstadt, DE;
LG Chemical Ltd., Seoul, KR;
Abstract
An achromatic quarter wave film (AQWF) comprising at least one quarter wave film (QWF) and at least one half wave film (HWF), each of said QWF and HWF comprising polymerized or vitrified anisotropic material, to methods and materials for the preparation of the AQWF, its use in optical devices like compensators and liquid crystal displays, and to a liquid crystal display comprising such an AQWF.