Patent ID: 8022401

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 the following general formula (a): wherein A represents a divalent residue of chrysene or a divalent residue of a fused ring structure having five or more fused rings; R1 to R10 each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having from 1 to 30 carbon atoms, a haloalkyl group having from 1 to 30 carbon atoms, an alkoxyl group having from 1 to 30 carbon atoms, a haloalkoxyl group having from 1 to 30 carbon atoms, an alkylthio group having from 1 to 30 carbon atoms, a haloalkylthio group having from 1 to 30 carbon atoms, an alkylamino group having from 1 to 30 carbon atoms, a dialkylamino group having from 2 to 60 carbon atoms with the alkyl groups optionally being bonded to each other to form a nitrogen atom-containing cyclic structure), an alkylsulfonyl group having from 1 to 30 carbon atoms, a haloalkylsulfonyl group having from 1 to 30 carbon atoms, an aromatic hydrocarbon group having from 6 to 60 carbon atoms or an aromatic heterocyclic group having from 1 to 60 carbon atoms; each of these groups being directly bonded to the structure of formula (a) and each of these groups optionally having a substituent bonded only to the group; and these groups may be connected to each other to form an aromatic hydrocarbon group having from 6 to 60 carbon atoms or an aromatic heterocyclic group having from 1 to 60 carbon atoms, wherein in the general formula (a), the two olefin groups adjacent to A are bonded at a symmetric position relative to A.