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:
Aug. 31, 2010
Filed:
Sep. 26, 2006
Masaaki Okunaka, Fujisawa, JP;
Masato Ito, Mobara, JP;
Masamitsu Furuie, Mobara, JP;
Hironori Toyoda, Mobara, JP;
Naoyuki Itou, Yokohama, JP;
Masaaki Okunaka, Fujisawa, JP;
Masato Ito, Mobara, JP;
Masamitsu Furuie, Mobara, JP;
Hironori Toyoda, Mobara, JP;
Naoyuki Itou, Yokohama, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
An organic electroluminescent display device with an extended lifetime is provided. When at least a hole transport layer HTR, a light emitting layer LUM, an electron transport layer ETR and an electron injection layer EIN are stacked between one electrode (an anode AND or a cathode CTD) formed on the principal surface of an insulating substrate SUB1 and the other electrode (the cathode CTD or the anode AND) by vapor deposition, the concentration of a plasticizer trapped into the layers in a vapor deposition apparatus is limited to less than or equal to 100 ppm.