Patent ID: 9296848
Filing Date: 2016-03-29
CPC Classification: B82Y,C08F,H01L,Y02E

Claim Text:
1. A copolymer including first and second repeating units different from each other, the first repeating unit including a segment represented by formula (A), and the second repeating unit including a segment represented by formula (B), wherein Ar 1 , Ar 2 , Ar 3 , and Ar 4 are identically or differently phenyl or thienyl group in which each H atom may be unsubstituted or substituted by a fluorine atom or a substituent having a fluorine atom, the substituent having a fluorine atom being a linear or branched alkyl group or alkoxy group having 1 to 12 carbon atoms in which one or more of H atoms are substituted by fluorine atoms, and at least one of Ar 1 , Ar 2 , Ar 3 , and Ar 4 is phenyl or thienyl group having one or more H atoms substituted by trifluoromethyl groups;