Patent ID: 7704648

Claim:
A method of fabricating a color filter substrate, comprising: providing a substrate having a plurality of pixel regions thereon; forming a plurality of strip patterns between the pixel regions to form a black matrix to isolate the pixel regions, wherein each strip pattern has a side portion distant from the substrate and extending to the edge of the adjacent pixel regions, and a method of forming the black matrix comprises: forming a first mask pattern in each pixel region, wherein a top portion of each first mask pattern has a width smaller than that of a bottom portion of each first mask pattern; forming a second mask pattern on each first mask pattern, wherein a top portion of each second mask pattern has a width larger than that of a bottom portion of each second mask pattern; forming a shielding layer on top portions of the second mask patterns, and forming the black matrix on the substrate between the first mask patterns at the same time, wherein the black matrix is separated from the shielding layer; removing the shielding layer, the second mask patterns, and the first mask patterns; forming a color filter pattern in each pixel region; and forming a common electrode over the substrate to cover the color filter patterns and the black matrix.