To provide a negative photosensitive resin composition for an optical element having good ink repellency and capable of reducing a residue at opening sections, a cured resin film for an optical element having good ink repellency, partition walls for an optical element capable of forming a high-precision pattern, and an optical element having such partition walls. A negative photosensitive resin composition comprising a photocurable alkali-soluble resin or alkali-soluble monomer (A), a photopolymerization initiator (B), a reactive ultraviolet absorber (C), a polymerization inhibitor (D), and an ink repellent (E); a cured film and partition walls formed by using the negative photosensitive resin composition; or an organic EL element, a quantum dot display, a TFT array, or a thin-film solar cell, having such partition walls positioned between a plurality of dots and their adjacent dots on a substrate surface.
NEGATIVE PHOTOSENSITIVE RESIN COMPOSITION, CURED RESIN FILM, PARTITION WALLS AND OPTICAL ELEMENT