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:
Apr. 03, 2001
Filed:
Mar. 04, 1998
Applicant:
Inventor:
Paul May, Dullingham, GB;
Assignee:
Cambridge Display Technology Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/62 ; H01J 6/304 ;
U.S. Cl.
CPC ...
H01J 1/62 ; H01J 6/304 ;
Abstract
The contrast of an electroluminescent display using an organic EL layer is improved by using a circular polariser in front of the surface. The polariser causes ambient light to be absorbed, while allowing transmission of emitted light and therefore improves the contrast of the display.