Black matrix composition, black matrix prepared using the same, method of forming a black matrix pattern using the same and method of manufacturing a color filter substrate using the same

A method of forming a black matrix pattern comprising:

• coating a black matrix composition on a base substrate and drying the black matrix composition to form a black matrix composition layer on the base substrate, the black matrix composition comprising:
• 40 parts by weight of a pigment dispersion;
• 0.1 to 1.0 part by weight of a photoinitiator;
• 5 to 20 parts by weight of a photo-polymerizable monomer;
• 5 to 20 parts by weight of a binder resin comprising an acryl-based copolymer containing fluorine and having a hydroxyl group combined with a side chain of the acryl-based copolymer;
• 0.1 to 0.5 part by weight of epoxy-based monomer containing fluorine;
• and
• 35 to 55 parts by weight of a solvent;
• exposing the black matrix composition layer through a photo mask disposed over the black matrix composition layer to partially photo-polymerize the exposed black matrix composition layer;
• providing the black matrix composition layer with a developing solution to partially develop the black matrix composition layer;
• and
• heating the black matrix composition layer so as to cure and cross-link the black matrix composition to form a thermally cross-linked resin in the black matrix composition layer.

A black matrix comprising:

• a photo-polymer polymerized from photo-polymerizable monomers comprising at least one selected from the group consisting of pentaerythritol triacrylate, dipentaerythritol pentacrylate and dipentaerythritol hexacrylate by using a photoinitiator comprising at least one selected from the group consisting of an acetophenone-based compound, a biimidazole-based compound and a triazine-based compound;
• and
• a thermally cross-linked resin comprising a polymer of formula (5):
• wherein ‘X’ denotes a natural number of 10 to 1000 and ‘Y’ denotes a natural number of 10 to 1000.

A method of manufacturing a color filter substrate comprising:

• coating a black matrix composition on a base substrate and drying the black matrix composition to form a black matrix composition layer on the base substrate, the black matrix composition comprising:
• 40 parts by weight of a pigment dispersion;
• 0.1 to 1.0 part by weight of a photoinitiator;
• 5 to 20 parts by weight of a photo-polymerizable monomer;
• 5 to 20 parts by weight of a binder resin comprising an acryl-based copolymer containing fluorine and having a hydroxyl group combined with a side chain of the acryl-based copolymer;
• 0.1 to 0.5 part by weight of epoxy-based monomer containing fluorine;
• and
• 35 to 55 parts by weight of a solvent;
• exposing the black matrix composition layer through a photo mask disposed over the black matrix composition layer to photo-polymerize the exposed black matrix composition layer;
• washing the black matrix composition layer with a developing solution to develop unexposed portions of the black matrix composition layer;
• heating the black matrix composition layer to cure and cross-link the black matrix composition layer so as to form a thermally cross-linked resin in the black matrix composition layer to thereby form a black matrix pattern;
• and
• injecting an ink into the black matrix pattern corresponding to the developed portion to form a color filter.