Resin composition, protection film of color filter and forming method thereof

Abstract

A a resin composition is provided forming a highly flat cured film even on a substrate with low flatness surface, suitable for forming a protecting film for optical device excellent in transparency, surface hardness, various resistance characteristics such as resistance to heat and pressure, alkali resistance and resistance to sputtering. The resin composition comprises (A) 100 parts by weight of a copolymer comprising (a1) a polymerizable unsaturated compound containing an oxiranyl group or an oxetanyl group and (a2) a polymerizable unsaturated compound excluding the compound of (a1), and (B) 0.01-50 parts by weight of a phosphate based ester represented by formula (1). X is an integer of 0-2 in the formula (1), R<1>is H or an organic group having a carbon atom abutting to the phosphorus atom; R<2>is an organic group having a carbon atom abutting to the oxygen atom.

Description

technical field [0001] The present invention relates to a resin composition, a method for forming a color filter protective film from the resin composition, and a color filter protective film. More specifically, it relates to a resin composition suitable as a material for forming a protective film used in a color filter for a liquid crystal display (LCD) and a color filter for a charge-coupled device (CCD), and a protective film using the resin composition Method and protective film formed from the composition. Background technique [0002] Radiation devices such as LCDs and CCDs are dipped in solvents, acids, or alkali solutions during their manufacturing process, and when wiring electrode layers are formed by sputtering, the surface of the elements is locally exposed to high temperatures. Then, in order to prevent deterioration or damage of elements due to such treatments, a protective film formed of a thin film resistant to these treatments is provided on the surface of ...

AI Technical Summary

Problems solved by technology

[0007] In the formation of such a protective film, it is convenient to use a thermosetting composition that has the advantage that a protective film excellent in hardness can be formed by a simple method, but a protective film resin that exhibits the above-mentioned various characteristics Compositions have highly reactive crosslinking groups or catalysts that allow them to form strong crosslinks, so there is a problem that the shelf life of the composition itself is very short, and handling is very troublesome

That is to say, not only the coating performance of the composition itself deteriorates with time, but also the coating machine must be frequently maintained, cleaned, etc., which is cumbersome to operate.

[0008] A material that can easily form a protective film that satisfies the general requirements of protective films such as transparency and satisfies the above-mentioned various properties, and has excellent storage stability as a composition has not yet been known.

[0009] In addition, Patent Document 3 discloses a thermosetting composition including latent carboxyl compounds used in paints, inks, adhesives, and molded articles, but does not disclose anything about color filter protective films.

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