Patent ID: 7928430

Claim:
An organic thin film transistor, comprising: a gate, a source, a drain; an organic semiconductor layer, connected to the source and the drain; and a dielectric layer, isolating the gate from the organic semiconductor layer and the source from the drain, wherein the dielectric layer comprises a mononuclear star-branched polymer dielectric material having a repeated unit of the formula (I): A-B 3 (I) wherein, A in formula (I) has a following structure shown in formula (III); in the formula (III), each of position marked by a star is attached to B of the formula (I); B represents a partially hydrolyzed compound of the formula (II): wherein, X represents H or CH 3 ; R represents alkyl, acetyl, t-butyl, or t-butyldimethyl silyl; “a” is an integer from 1 to 5; y and z are molar ratio and are the numbers satisfying y+z=1, 0<y<1 and 0<z<1.