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:
Mar. 29, 2011
Filed:
Oct. 10, 2008
Noriharu Matsudate, Kujukuri, JP;
Takeshi Ookawara, Mobara, JP;
Noriharu Matsudate, Kujukuri, JP;
Takeshi Ookawara, Mobara, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
A top-emission-type organic EL display device which exhibits uniform screen brightness is realized by preventing a voltage drop of an upper electrode formed of a transparent conductive film. Pixels each of which is sandwiched between an upper electrode and a lower electrode are arranged in a matrix array to form a display region. An auxiliary electrode extends in the lateral direction between the pixels and the pixels for preventing a voltage drop of the upper electrode. A current supply line which supplies an electric current to the upper electrode and the auxiliary electrodes are made conductive with each other by forming a through hole in an insulation layer. To ensure reliability of connection at the through hole, a contact electrode made of metal which overlaps with the auxiliary electrode is formed on the through hole by vapor deposition.