Abstract: Provided are a curable resin and a curable resin composition which have alkali-solubility and curability that can freely be adjusted and a high sensitivity, a liquid crystal panel substrate which can maintain an even cell gap, and a liquid crystal panel using the liquid crystal panel substrate to exhibit a superior display quality. A curable resin composition comprising an imide-containing copolymer having a molecular structure wherein a constitutional unit at least the following units are connected: a constitutional unit having a cyclic imide group represented by the formula (1), a constitutional unit having an acid functional group such as a carboxyl group; and a constitutional unit having a photopolymerizing functional group. In a liquid crystal panel substrate (color filter 103), plural spacers (column-shaped spacers 12) are disposed in a non-display region on a substrate 5.

Abstract: An object of the present invention is to provide a high photo-sensitivity curable resin. And another object is to prevent the viscosity increase, or to improve the transparency of said photo-curable resin, if necessary. An isocyanate compound containing a radical polymerizable group is reacted with a raw material polymer having a principal chain comprising an unit having an acid functional group and an unit having a hydroxyl group in the irate of 1.0 or more in terms of the equivalent ratio of the isocyanate group to the hydroxyl groups in said principal chain (NCO/OH). Moreover, when a raw material polymer is produced, its transparency is improved by using an azo polymerization initiator of non-nitrile series or a peroxide-based polymerization initiator. Use of any polymerization inhibitor selected from the groups of compounds shown in formula (9) or formula (15) can also improves transparency when introducing the isocyanate compound into the raw material.

Abstract: A color filter including a transparent substrate, a colored layer on the substrate, and a protective layer on the colored layer. The protective layer is the product formed by exposing, developing, and heating a coating containing an epoxy-containing copolymer resin having 0 to 55% by mole of formula (1), 5 to 95% by mole of formula (2), and 5 to 95% by mole of formula (3), the formula (1) units having been partially reacted, through carboxyl groups, with a (meth)acryloylalkyl isocyanate compound, the formula (2) units having been partially reacted, through hydroxyl groups, with a (meth)acryloylalkyl isocyanate compound, the copolymer resin containing 5 to 95% by mole of (meth)acryloyl groups, an acid value of 0 to 400 mg KOH/g, and a weight average molecular weight of 5,000 to 1,000,000.

Abstract: A color filter including a transparent substrate, a colored layer on the substrate, and a protective layer on the colored layer.

Abstract: An epoxy-containing copolymer resin having 0 to 55% by mole of formula (1), 5 to 95% by mole of formula (2), and 5 to 95% by mole of formula (3), the formula (1) units having been partially reacted, through carboxyl groups, with a (meth)acryloylalkyl isocyanate compound, the formula (2) units having been partially reacted, through hydroxyl groups, with a (meth)acryloylalkyl isocyanate compound, the copolymer resin containing 5 to 95% by mole of (meth)acryloyl groups, an acid value of 0 to 400 mg KOH/g, and a weight average molecular weight of 5,000 to 1,000,000: wherein R is hydrogen or a C1 to C5 alkyl group; R1 represents a C2 to C4 alkylene group; R2 represents a C1 to C4 alkylene group having 1 to 4 carbon atoms; Z is 1,2-epoxy,1,3-epoxy, or 1,4-epoxy; and a, b, and c are integers respectively corresponding to the molar percentages.

Abstract: Disclosed is a liquid crystal display device which can assure a desired cell gap at the time of heat contact bonding involved in the assembling of cells in a liquid crystal display device and, after the preparation of liquid crystal cells, has excellent reliability, can cope with an increase in cell thickness at high temperatures, and can inhibit a foaming phenomenon in a liquid crystal layer at low temperatures. The liquid crystal display device comprises: two substrates; a liquid crystal sandwiched and supported between the two substrates; and spacers, for maintaining a predetermined substrate-substrate spacing, provided on at least one of the substrates in its portions where the liquid crystal is sandwiched and supported, the spacers being formed of a photocured resin layer, the photocured resin layer having such properties that, as determined by the measurement of dynamic viscoelasticity in the temperature range of −40° C. to 80° C., the storage modulus (E′) is not more than 5.