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:
Sep. 15, 2009
Filed:
Sep. 04, 2005
Applicant:
Chen-jean Chou, New City, NY (US);
Inventor:
Chen-Jean Chou, New City, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
Drive method and pixel circuits comprising a direct current path between a scan electrode and a data electrode are disclosed. Preferred embodiments of said pixel circuit are provided for the application to convert current signal received from a data electrode to voltage signal for current-control drive. In such preferred embodiments, light emitting device displays are operated in current-control mode without being influenced by variations in threshold voltage of transistor and forward voltage of light emitting element. Further extension and applications are described. Preferred embodiments leading to three-transistor solution of such operation are disclosed.