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:
Aug. 22, 2003
Koji Henmi, Yonezawa, JP;
Naoki Yazawa, Yonezawa, JP;
Koji Henmi, Yonezawa, JP;
Naoki Yazawa, Yonezawa, JP;
Tohoku Pioneer Corporation, Yamagata, JP;
Abstract
Provided is a driving device that enables compensating for the decrease in luminance characteristic due to the aging of an EL display panel. On a transparent substratemade of, for example, glass, there are lamination-formed a number of luminescent elements. By this, a light from the luminescent element is radiated, via the transparent substrate, in a direction of its intersecting a substrate surface thereof, thereby a display image is formed. The driving device is equipped with photo-electric conversion meansthat, when receiving part of the light from the luminescent elementthat, by using as the interface a substrate surface of the transparent substrateor a substrate surface of a light-guiding substratedisposed on the transparent substratein a laminated state, is reflected within the substrate, produces an electric signal, as well as drive power setting meansthat sets a luminescent drive power that is supplied to each of the luminescent elements. By this construction, it is possible to compensate for the decrease in luminance characteristic due to, for example, the aging of the luminescent element