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. 21, 1995
Filed:
Sep. 29, 1993
Applicant:
Inventors:
J Michael Lengyel, Ramona, CA (US);
Ronald C Robinder, Albuquerque, NM (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 63 ; 359 82 ; 359 68 ;
Abstract
An apparatus for achieving an active matrix liquid crystal display flat panel that optically eliminates bluish or purplish background luminance and fluorescence of the liquid crystal materials. Two polarized layers are placed in a crossed configuration one behind and one in front of an active glass thin film transistor (TFT) layer to block a majority of any background luminance. Two layers of tinted glass are further placed one behind and one in front of the active glass TFT layer to block any remaining background luminance which has leaked through the polarizing layers.