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.:

US 7796098 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 14, 2010

Filed:

Nov. 10, 2003
Applicants:

Ken-ichi Masumoto, Hirakata, JP;

Tetsuroh Nakamura, Takaraduka, JP;

Inventors:

Ken-ichi Masumoto, Hirakata, JP;

Tetsuroh Nakamura, Takaraduka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/30 (2006.01); G09G 3/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

A light emitting device is provided which is capable of feeding a reverse current to the defective structural part of a light emitting element, e.g. an organic EL element, without using the power supply voltage as reverse bias. The light emitting device comprises a capacitive light emitting element, e.g. an organic EL element, emitting light upon application of a DC forward voltage. A reverse current can be fed to the light emitting element through a low-resistance defective structural part, for example, only by connecting both electrodes of the organic EL element with the earth after stopping application of the DC forward voltage using a push-pull circuit (), thereby discharging residual charges of the light emitting element.


Find Patent Forward Citations

Masumoto, Ken-ichi. (2010). Light emitting device (U.S. Patent No. 7796098). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7796098

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