An automatic animal feeder includes a housing has a top wall, a bottom wall and a peripheral wall having an opening therein. The liquid crystal display device is driven such that, after a common data voltage is applied to liquid crystal layers of sub pixels disposed in each of the pixels, the transmittance of the liquid crystal layer of a sub pixel which is positioned closest to a boundary between a retarder plate and a retarder plate will be decreased. The fuel system may be used with engines such as gasoline engines, turbine engines, diesel engines, and steam engines. The primary absorbent member and the secondary absorbent member are joined together to form a unitary structure.