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:
Aug. 20, 1991
Filed:
Sep. 28, 1990
Applicant:
Inventor:
Duane A Haven, Cupertino, CA (US);
Assignee:
Greyhawk Systems, Inc., Milpitas, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 44 ; 359 45 ; 359 84 ; 359 91 ; 359 99 ;
Abstract
A light scattering liquid crystal transducer in which the degree of light scattering is controlled by impressing an electric field across the cell during and immediately after the application of a high-energy short duration thermal pulse applied to the entire viewed region of the cell. This allows full gray scale to be achieved as a function of applied voltage.