Switching characteristics of ferroelectric liquid crystals under horizontal electric field have been investigated. In order to stabilize a single domain state, hybrid alignment was employed. In order to reduce a hysteresis in transmittance versus voltage characteristics, short-pitch ferroelectric liquid crystal materials were useful. Obtained contrast ratio was 10:1. Optical response showed mono-stable behavior and transmittance rise and fall times were 220 and 150 mus, respectively.