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. 26, 2006
Filed:
Apr. 28, 2005
Naoki Kato, Yokohama, JP;
Tadakage Seki, Tokyo, JP;
Naoki Kato, Yokohama, JP;
Tadakage Seki, Tokyo, JP;
Optrex Corporation, Tokyo, JP;
Abstract
Although the driving voltage of an organic EL element is gradually reduced (gradually decreases) as an ambient temperature increases, a supply voltage V, which is supplied to a data electrode driver, is controlled to so as to be kept at a higher value than the driving voltage of the organic EL element by about 6 V as a margin value for supply source in an intermediate temperature range (e.g., from 20 to 60° C.). In a high temperature range, the supply voltage Vis decreased, according to temperature rise, in a higher degree as the gradual decrease in the supply voltage Vin the intermediate temperature range.