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, 2006
Filed:
Jul. 24, 2000
Applicants:
Hans-rolf Dübal, Eltville, DE;
Barbara Hornung, Hasselroth, DE;
Toshiaki Nonaka, Kakegawa, JP;
Inventors:
Assignee:
Clariant International, Ltd., Muttenz, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 19/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The liquid-crystal switching or display device comprises a chiral smectic liquid-crystal mixture, where the ratio Δ/Θ of the angle between the rubbing direction and the smectic layer normal to the tilt angle in the liquid-crystal mixture is at least 0.41. Preferably, the liquid-crystal mixture has the phase sequence I-N-C and the tilt angle Θ at 25° C. is between 19° and 39°.