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. 18, 2004
Filed:
Dec. 09, 1999
Yasuo Maeda, Kawachinagano, JP;
Akihiko Fujino, Sakai, JP;
Reiji Seki, Tondabayashi, JP;
Noriyuki Ishii, Sakai, JP;
Makoto Akesaka, Sakai, JP;
Satoshi Yokota, Toyonaka, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A display device having an organic luminescent element arranged at an object image-forming position of a finder optical system. Frames are formed by parts of the negative electrode formed of non-transparent material, an organic electroluminescent material is laminated thereon on the eyepiece side, and a positive electrode formed of transparent material is superimposed thereon on the eyepiece side. Since the non-transparent negative electrodes shield the light, the frames are recognized as black frames. When the periphery is dark, a voltage is applied between the electrodes causing the organic electroluminescent material to luminesce, such that the frame itself becomes brighter in display and is readily visible.