| 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, comprising a copolymer having a structural unit represented by the following formula (1) and a structural unit represented by the formula (2) (Wherein R 0 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 in its main chain, and R 2 Represents an epoxy group or an organic group having 5 to 12 carbon atoms and having an epoxy ring. |