A cholesteric liquid crystal color filter substrate for reflective liquid crystal display devices comprises an alignment layer on a black substrate, a cholesteric liquid crystal color filter on the alignment layer, the cholesteric liquid crystal color filter including sub-color-filters red, green, and blue, and black matrices on boundaries of each of the sub-color filters R, G, and B. The system provides an enlarged sloped tank outlet system that overcomes the deficiencies of convention systems. A lightly doped sourcedrain region is formed on surface of the first region.