| abstract |
[PROBLEMS] To provide a resin composition for a thermosetting flattening film or a micro lens. [MEANS FOR SOLVING PROBLEMS] A resin composition for a planarizing film or a micro lens, which comprises a component (A), a component (B) and a solvent. (A): a copolymer (B) having a structural unit represented by the following formula (1) and having a structural unit represented by the following formula (2) or (3): a thermal acid generator , R 0 independently represents a hydrogen atom or a methyl group, R 1 represents a single bond or an alkylene group having 1 to 5 carbon atoms, the alkylene group may have an ether bond therein, R 2 represents an epoxy group, R 3 is an alkylene group having 1 to 3 carbon atoms and n is an integer of 0 to 5.) |