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. 04, 2011
Filed:
Aug. 30, 2005
Takuji Yoshimoto, Funabashi, JP;
Go Ono, Funabashi, JP;
Takuji Yoshimoto, Funabashi, JP;
Go Ono, Funabashi, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
An excellent EL device having low driving voltage, high luminous efficiency and long life can be obtained by using a charge-transporting thin film composed of a charge-transporting varnish which contains an arylsulfonic acid compound represented by the formula (1) or (2) below as an electron-acceptor material especially in an OLED device or a PLED device. [In the formulae, X represents O, S or NH; A represents a naphthalene ring or anthracene ring having a substituent other than X and n SOH groups; B represents a substituted or unsubstituted hydrocarbon group, 1,3,5-triazine group or a substituted of unsubstituted group represented by the following formula (3) or (4): (wherein Wand Weach independently represents O, S, an S(O) group, an S(O) group, or a substituted or unsubstituted N, Si, P or P(O) group); n indicates the number of sulfonic acid groups bonded to A which is an integer satisfying 1≦n≦4; q indicates the number of B—X bonds which is an integer satisfying 1≦q; and r indicates the number of recurring units which is an integer satisfying 1≦r.].