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:
May. 25, 2010
Filed:
Jun. 15, 2005
Owain Llyr Parri, Ringwood, GB;
Tara Perrett, Bournemouth, GB;
Kim Slaney, Christchurch, GB;
Richard Harding, Hants, GB;
Mark Verrall, Shilin, TW;
Shirley Ann Marden, Poole, GB;
Owain Llyr Parri, Ringwood, GB;
Tara Perrett, Bournemouth, GB;
Kim Slaney, Christchurch, GB;
Richard Harding, Hants, GB;
Mark Verrall, Shilin, TW;
Shirley Ann Marden, Poole, GB;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The invention relates to an optically biaxial film comprising an anisotropic material with deformed helically twisted structure and locally varying birefringence, to methods and materials for its preparation, to its uses as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial film.