We have investigated electro-optical properties of an in-plane switching cholesteric liquid crystal display (LCD). ChLC mixture used in this experiment was a mixture of ZLI-6000-100 (Merck, n_o=1.5082, n_e=1.6589) and chiral additive S-811 (Merck Co.). The resulting liquid crystal mixture with chiral additive (~28wt%) appeared greenish at ambient light. Reflection peak wavelength at zero field is about 530nm in the planar state. To apply in-plane electric field, we devised a comb-shaped ITO (Indium Tin Oxide) pattern on glass substrates. The reflectance was measured by using an Ocean Optics S2000 UV-Vis spectrometer connected to the microscope by a single mode optical fiber. Planar and focal-conic texture changes are induced by application of an in-plane electric field.