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:
Mar. 28, 1995
Filed:
Aug. 27, 1993
Seoung J Im, Seoul, KR;
Samsung Electron Devices Co., Ltd., Kyunggi-do, KR;
Abstract
The polymer dispersed liquid crystal according to the present invention comprises about 5 to about 40% by weight of liquid crystal mixture and about 60 to about 95% by weight of polymer, the polymer consisting of 1 to 40% by weight of oligomer and monomer having acrylate group(s), and 0.1 to 20% by weight of monomer of the following structural formula similar to the structure of the liquid crystal, and the liquid crystal mixture consisting of 0 to 20% by weight of cholesteric liquid crystal and 50 to 98% by weight of nematic liquid crystal as based on the total weight of the material. ##STR1## The polymer dispersed liquid crystal is capable of providing a wider viewing angle and an improved visual contrast and does not require treatment to orientation. Furthermore, the electrically switched liquid crystal display including it therein makes use of light more efficiently because polarizer is unnecessary any more, and may be produced by a simple process because no orientation (rubbing) treatment is required.