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:
Jan. 24, 2006
Filed:
Nov. 24, 2003
Tetsuya Satou, Kadomi, JP;
Mikiko Matsuo, Nara, JP;
Hisanori Sugiura, Hirakata, JP;
Hitoshi Hisada, Toyonaka, JP;
Ryuichi Shingae, Neyagawa, JP;
Yoshinobu Murakami, Katano, JP;
Tetsuya Satou, Kadomi, JP;
Mikiko Matsuo, Nara, JP;
Hisanori Sugiura, Hirakata, JP;
Hitoshi Hisada, Toyonaka, JP;
Ryuichi Shingae, Neyagawa, JP;
Yoshinobu Murakami, Katano, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. A thin film EL device of the present invention uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.