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:
Sep. 09, 2003
Filed:
Nov. 14, 2000
Applicant:
Inventors:
Diana Cynthia Ulrich, Oxfordshire, GB;
Craig Tombling, Oxfordshire, GB;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1339 ;
U.S. Cl.
CPC ...
G02F 1/1339 ;
Abstract
A liquid crystal device comprises pixels which are switchable between a white state and a black state. Spacers are disposed in gaps between the pixels and are birefringent such that the spacers have the same optical properties as liquid crystal in the black state. For example, the spacers may have the same retardation as the liquid crystal layer with an optic axis fixed in the direction of the optic axis of the liquid crystal when in the black state.