Patent ID: 8330147

Claim:
An organic thin film transistor comprising a substrate having thereon at least three terminals of a gate electrode, a source electrode and a drain electrode, an insulator layer and an organic semiconductor layer, with a current between a source and a drain being controlled upon application of a voltage to the gate electrode, wherein the organic semiconductor layer includes an organic compound having a structure of formula (b): wherein one of A 1 and A 2 represents an unsubstituted divalent aromatic hydrocarbon group from benzene, naphthalene, anthracene, tetracene, pentacene, phenanthrene, chrysene, triphenylene, corannulene, coronene, hexabenzotriphenylene, hexabenzocoronene, or sumanene, and the other of A 1 and A 2 represents an unsubstituted divalent aromatic heterocyclic group from pyridine, pyrazine, quinoline, naphthyridine, quinoxaline, phenazine, diazaanthracene, pyridoquinoline, pyrimidoquinazoline, pyrazinoquinoxaline, phenanthroline, carbazole, 6,12-dihydro-6,12-diazaindenofluorene, dibenzothiophene, dithiaindacene, dithiaindenoindene, thienothiophene, dithienothiophene, dibenzofuran, benzodifuran, dibenzoselenophene, diselenaindacene, diselenaindenoindene, dibenzosilole, thiophene, benzodithiophene, thiazole, imidazopyridine, or benzothienobenzothiophene; R 1 to R 10 , in the formula (a), each independently represents a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, a haloalkyl group having from 1 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms, and R 1 to R 10 , in formula (b), are each independently hydrogen or alkyl having 1 to 30 carbon atoms; n represents an integer of from 1 to 2; and A 1 -(A 2 ) n -A 1 takes a symmetric structure.