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:
May. 31, 2011
Filed:
Feb. 04, 2005
Chi Shen Tuan, Hsinchu, TW;
Zong-wei Tsai, Hsinchu, TW;
Ching-ian Chao, Hsinchu, TW;
Shyue-ming Jang, Hsinchu, TW;
Chia-kuo Yen, Hsinchu, TW;
Chi Shen Tuan, Hsinchu, TW;
Zong-Wei Tsai, Hsinchu, TW;
Ching-Ian Chao, Hsinchu, TW;
Shyue-Ming Jang, Hsinchu, TW;
Chia-Kuo Yen, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The present invention discloses a phenanthrene derivative having the following structure: wherein Arand Arindependently are phenyl, nathphyl, heterocyclic group, polycyclic aromatic or polycyclic heterocyclic group with at least one conjugated substituent. The conjugated substituent can be an electron withdrawing group or electron donating group. The phenanthrene derivatives have semiconductor properties of electron transfer, electroluminescence (EL), and photoluminescence (PL). Intermolecular stacking can be avoided and electron-luminescent emission stability is enhanced when the derivatives are applied as a light-emitting material in organic EL devices due to the presence of the two stereo cyclopentane rings, such as a host compound or a dopant emitting blue light.