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:
Nov. 03, 1998
Filed:
Aug. 20, 1996
Applicant:
Inventors:
Steven W Depp, Katonah, NY (US);
Anthony Cyril Lowe, Braishfield, GB;
Robert Luke Wisnieff, Yorktown Heights, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ;
U.S. Cl.
CPC ...
349 64 ; 349112 ; 349 74 ;
Abstract
A display having an electrically variable diffuser is disclosed. In response to an electric field, the electrically variable diffuser is electrically switched from a low illumination/narrow viewing angle mode to a high illumination/wide viewing angle mode. The viewing angle is correlated with backlight luminance to provide an adequate display as the viewing angle is varied. This allows a user to choose between preserving battery life and maximizing viewing angle.