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:
May. 05, 2015
Filed:
Apr. 19, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Fujio Kawano, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A driving apparatus for light-emitting devices includes transistors, data lines connected to gates of the transistors, feedback lines connected to a source or a drain of the transistors that supply a current to the light-emitting devices, a voltage amplifier that includes an input terminal connected to the feedback line and an output terminal connected to the data line, and a data generation circuit connected to the input terminal of the voltage amplifier through a capacitor. The voltage amplifier converts a change in voltage of the feedback line generated by a current flowing from the transistors to the capacitor into a change in voltage of the data line in a direction in which the transistors connected to the data line turn off.