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:
Feb. 08, 2000
Filed:
Mar. 13, 1998
Applicant:
Inventors:
Webster E Howard, Lagrangeville, NY (US);
Olivier Prache, Pleastantville, NY (US);
Assignee:
Fed Corporation, Hopewell Junction, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ; G09G / ;
U.S. Cl.
CPC ...
345 76 ; 345 46 ; 345 82 ; 345205 ; 3151691 ; 3151693 ; 3151694 ;
Abstract
The present invention is a current driver for an active matrix organic light emitting device display. As embodied herein, the driver relies upon a single transistor, driven in a saturation regime to provide a current source for an OLED. This results in a pulse drive. The driver of the present invention is compatible with high speed integrated drivers and can be fabricated on the same substrate as the OLED. A technique for driving an OLED is disclosed that will produce a good quality gray scale image.
Published as: