Patent ID: 9035287
Filing Date: 2015-05-19
Classification: H01L

Abstract:
1. An optical, electronic or optoelectronic device comprising a thin film transistor, the thin film transistor comprising: a substrate; a channel layer comprising a metal oxide semiconductor comprising a front surface and a back surface; source and drain electrodes in contact with the channel layer; a gate electrode; a gate dielectric layer disposed between the channel layer and the gate electrode; and a passivation layer in contact with the back surface of the channel layer; wherein at least one of the gate dielectric layer and the passivation layer comprises a polysulfone-based material comprising a polymer having the formula: wherein: W is —Ar[—Y—Ar] q —, wherein: Ar, at each occurrence, independently is a divalent C Y, at each occurrence, independently is selected from the group consisting of —O—, —S—, —(CR′R″) q is selected from the group consisting of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10; Z and Z′ independently are selected from the group consisting of —O—, —S—, and —Se—; L and L′, at each occurrence, independently are selected from the group consisting of —O—, —S—, a divalent C 1-10 alkyl group, a divalent C 6-18 aryl group, and a covalent bond; T and T′, at each occurrence, independently are Q or R, wherein: Q is a crosslinkable group comprising an ethenyl moiety, an ethynyl moiety, a dienyl moiety, an acrylate moiety, a coumarinyl moiety, and an epoxy moiety; and R, at each occurrence, is selected from the group consisting of H, a halogen, a C p and p′ independently are selected from the group consisting of 1, 2, 3 and 4; and m and n are real numbers representing mole fractions ranging from 0 to 1, wherein the sum of m and n is about 1.