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. 27, 2002
Filed:
Aug. 18, 2000
Applicant:
Inventor:
Iain M. Hunter, Brighton, GB;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/10 ;
U.S. Cl.
CPC ...
G09G 3/10 ;
Abstract
An active matrix electroluminescent display device comprises an array of display pixels ( ) which each include a current-driven electroluminescent display element ( ) connected to a driving device ( ) controlling the current flowing through the display element in a drive period according to a voltage stored on a capacitance ( ) and determined by a data signal applied in a preceding address period. In order to compensate for ageing effects in the display element, electro-optic devices ( ) are included in the pixel for adjusting the voltage stored on the capacitance in dependence on the light output of its display element during the address period.