Patent ID: 6999251

Claim:
An apparatus for use in forming colored segments of a color filter on a substrate having a central slot, an outer periphery around the central slot, a first surface which extends between the central slot and the outer periphery and which is coated with the colored segments, and a second surface opposite to the first surface, said apparatus comprising: at least one pair of first and second masking plates, said first masking plate being adapted to overlie the first surface, said first masking plate having a first positioning hole, a first outer periphery corresponding to the outer periphery of the substrate, and at least one first cutout part adapted to expose a portion of the first surface, said second masking plate having a second positioning hole, a second outer periphery corresponding to said first outer periphery, and at least one second cutout part corresponding to said first cutout part; and a securing device for securing together said first and second masking plates and the substrate, said securing device passing through the central slot and said first and second positioning holes, and aligning said first and second cutout parts, whereby said second masking plate presses said first masking plate tightly against the substrate.