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:
Dec. 17, 2002
Filed:
Oct. 02, 2000
Applicant:
Inventor:
Takayuki Tomida, Nagoya, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/30 ;
U.S. Cl.
CPC ...
G09G 3/30 ;
Abstract
A transistor Q for supplying driving currents Ia to In to EL display elements to is provided in a stabilization voltage supply circuit . The transistor Q is connected to a current sensing resistor Ras for detecting a collector current of the transistor Q . When a total current Ix for driving the EL display elements rises to a certain abnormal level, a bias suppressing element Qa is turned on to thereby reduce a base-emitter bias of the transistor