The present invention relates to a fan motor is for forced circulation of cool air in the refrigerator and comprises a molding unit, a shaft bearing unit, a rotor and an end cap. The switch transistor has a first electrode, a second electrode, and a first gate. The material areas are formed from different materials. The system replaces the three variables of the target pixel with the three variables of one of the proximate pixels depending on a relationship between the target characteristic value and the proximate characteristic values. The second arm is substantially symmetrically positioned with respect to the first arm and the second arm has an angle difference of about 180\xb0 with respect to the first arm. The region including the accessed addresses may for example a rectangular region of from the minimum vertical direction address to the maximum vertical direction address Y among the accessed addresses, and from the minimum horizontal direction address to the maximum horizontal direction address among the accessed addresses.