Thermosetting resin composition, cured film, and solid-state imaging device

Abstract

A thermosetting resin composition containing a binder resin, a thermal initiator, a thermosetting agent, and a solvent is disclosed. The binder resin contains an acrylic copolymer containing a repeating unit having a carbazole group and a repeating unit having a glycidyl group. A cured film formed from the thermosetting resin composition and a solid-state imaging device including the cured film are disclosed. The thermosetting resin composition can be cured within minutes at temperatures below 220° C. to form a cured film having high transmittance and high refractive index properties, excellent flatness and hardness, but no coating stains. In addition, the thermosetting resin composition has excellent stability over time, and dry etching resistance properties favorable for implementation of micro-lens geometries.

Dependencies are inferred from the claim text.