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:
May. 09, 2000
Filed:
Nov. 27, 1996
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ; C09K / ;
U.S. Cl.
CPC ...
349113 ; 349122 ; 349165 ;
Abstract
A reflective guest-host liquid crystal display device includes an optical reflective layer and a quarter wavelength plate (1/4 wavelength phase shifter) inside the device provides improved contrast an brightness of the display with a paper-white tone.