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. 12, 1991
Filed:
Jun. 08, 1988
Applicant:
Inventor:
Ties S Te Velde, Waalre, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340784 ; 340785 ; 350333 ;
Abstract
Liquid crystal display device (1) based on dielectric anisotropy in such thin layers that the effective optical path length difference between the two optical states is 1/2.lambda..sub.0 after reflection. A semiconductor body provided with drive elements (12) which is completely coated with a reflective layer (24) is used as a reflective substrate (6).
Te Velde, Ties. (1991). Electro-optic display device for use in the reflection mode (U.S. Patent No. 4999619). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4999619
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile