Photosensitive resin composition, color filter, and copolymer resin useful for them
申请人:DAI NIPPON PRINTING CO., LTD.
公开号:EP1035439A2
公开(公告)日:2000-09-13
There is provided an epoxy-containing copolymer resin comprising 0 to 55% by mole of constituent units represented by formula (1), 5 to 95% by mole of constituent units represented by formula (2), and 5 to 95% by mole of constituent units represented by formula (3), the constituent units represented by formula (1) having been partially reacted, through carboxyl groups thereof, with a (meth)acryloylalkyl isocyanate compound, the constituent units represented by formula (2) having been partially reacted, through hydroxyl groups thereof, with a (meth)acryloylalkyl isocyanate compound, the copolymer resin containing 5 to 95% by mole of (meth)acryloyl groups and having an acid value of 0 to 400 mg KOH/g and a weight average molecular weight of 5,000 to 1,000,000 as determined using polystyrene as a standard:
wherein R represents hydrogen or an alkyl group having 1 to 5 carbon atoms; R1 represents an alkylene group having 2 to 4 carbon atoms; R2 represents an alkylene group having 1 to 4 carbon atoms; Z represents a 1,2-epoxy, 1,3-epoxy, or 1,4-epoxy group; and a, b, and c are integers respectively corresponding to said molar percentages.
There is further provided a photosensitive resin composition comprising: the above epoxy-containing copolymer resin; an alkali-developable photocurable copolymer resin; a bifunctional or higher polyfunctional photopolymerizable acrylate monomer; and an initiator,
the alkali-developable photocurable copolymer resin comprising 5 to 55% by mole of constituent units represented by formula (1) and 5 to 95% by mole of constituent units represented by formula (2), the constituent units represented by formula (1) having been partially reacted, through carboxyl groups thereof, with a (meth)acryloylalkyl isocyanate compound, the constituent units represented by formula (2) having been partially reacted, through hydroxyl groups thereof, with a (meth)acryloylalkyl isocyanate compound, the copolymer resin containing 5 to 95% by mole of (meth)acryloyl groups and having an acid value of 5 to 400 mg KOH/g and a weight average molecular weight of 5,000 to 1,000,000 as determined using polystyrene as a standard.
There is still further provided a color filter comprising: a transparent substrate; a colored layer provided on the transparent substrate; and a protective layer provided so as to cover the colored layer, the protective layer having been formed by coating the above photosensitive resin composition, exposing the coating, developing the exposed coating with an alkali, and heating the developed coating.
本发明提供了一种含环氧树脂的共聚物树脂,其中包含 0 至 55%(以摩尔计)的式(1)代表的组成单元、5 至 95%(以摩尔计)的式(2)代表的组成单元和 5 至 95%(以摩尔计)的式(3)代表的组成单元,式(1)代表的组成单元已通过其羧基与(甲基)丙烯酰基烷基异氰酸酯化合物部分反应、由式(2)代表的组成单元通过其羟基与(甲基)丙烯酰烷基异氰酸酯化合物部分反应,共聚物树脂含有 5 至 95%(以摩尔计)的(甲基)丙烯酰基,酸值为 0 至 400 毫克 KOH/克,以聚苯乙烯为标准测定的重量平均分子量为 5,000 至 1,000,000 :
其中 R 代表氢或具有 1 至 5 个碳原子的烷基;R1 代表具有 2 至 4 个碳原子的亚烷基;R2 代表具有 1 至 4 个碳原子的亚烷基;Z 代表 1,2-环氧基、1,3-环氧基或 1,4-环氧基;a、b 和 c 分别是与所述摩尔百分比相对应的整数。
还提供了一种光敏树脂组合物,包括:上述含环氧树脂的共聚物树脂;可碱显影的光固化共聚物树脂;双官能团或更高官能团的可光聚合丙烯酸酯单体;以及引发剂、
碱显影型光固化共聚物树脂包括 5-55%(以摩尔计)由式(1)代表的组成单元和 5-95%(以摩尔计)由式(2)代表的组成单元,由式(1)代表的组成单元已通过其羧基与(甲基)丙烯酰烷基异氰酸酯化合物部分反应、由式(2)代表的组成单元通过其羟基与(甲基)丙烯酰烷基异氰酸酯化合物部分反应,共聚物树脂含有 5 至 95%(以摩尔计)的(甲基)丙烯酰基,酸值为 5 至 400 毫克 KOH/克,以聚苯乙烯为标准测定的重量平均分子量为 5,000 至 1,000,000 。
还进一步提供了一种彩色滤光片,它包括:透明基底;设置在透明基底上的有色层;以及为覆盖有色层而设置的保护层,保护层是通过涂布上述感光树脂组合物、曝光涂层、用碱显影曝光涂层以及加热显影涂层而形成的。