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. 29, 2008
Filed:
Nov. 22, 2004
Hiroyasu Matsuura, Yokohama, JP;
Shingo Ishihara, Yonezawa, JP;
Keiji Takanosu, Yokohama, JP;
Eiji Matsuzaki, Yokohama, JP;
Hiroyasu Matsuura, Yokohama, JP;
Shingo Ishihara, Yonezawa, JP;
Keiji Takanosu, Yokohama, JP;
Eiji Matsuzaki, Yokohama, JP;
Hitachi Displays, Ltd., Mobara-Shi, JP;
Abstract
The organic electroluminescence display apparatus of the present invention comprises a first and second substrates, the former being coated with banks for separating pixels, a lower electrode, organic light-emitting layer and upper electrode of a transparent material in this order, and the latter being coated with a color filter and electroconductive shadow pattern, wherein the organic light-emitting layer surrounded by the banks for separating pixels faces the color filter, and the first and second substrates face each other in such a way that the upper electrode over the banks for separating pixels is electrically connected to the electroconductive shadow pattern. This structure connects at least one of the upper electrode and electroconductive shadow pattern to a power supply point, to control ununiform emitted light brightness which may result from voltage drop at the upper transparent electrode. Moreover, the organic light-emitting layer can be formed without a vapor deposition mask having a precise aperture pattern, to efficiently produce the organic EL display apparatus.