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:
Apr. 20, 1999
Filed:
Sep. 26, 1997
Teruo Kusaka, Tokyo, JP;
Taizo Tanaka, Tokyo, JP;
NEC Corporation, , JP;
Abstract
Metal electrodes (cathode) are made from a plurality of materials wherein they are not simply superposed one another along the sectional direction, but the metal electrodes (cathode) are in contact with an organic thin film in such that they exhibit a difference in magnitude of work functions dependent upon their disposed positions in the plane. More specifically, a local metal electrode being in contact with the organic thin film inside a light-emitting device in the plane is formed from a material having a small work function, while the peripheral metal electrode which encloses the local metal electrode, wiring sections other than the light-emitting device and the like are formed from materials each having a lager work function than that of the local metal electrode.