Position adjustment device and paste dispenser having the same

The present invention relates to a sealant coater that can apply a sealant to a target substrate at a precise location in a suitable pattern, regardless of changes in ambient temperature and humidity. The sealant coating machine includes a control unit including a calculation device that calculates a compensation ratio that is a ratio of an actual moving distance that the movable member actually moves under a predetermined temperature condition and / A ratio between measured moving distances obtained by reading scales of the linear scale; a storage device that stores a plurality of compensation ratios calculated by the computing device based on a plurality of temperature conditions and / or a plurality of humidity conditions as mapping data; The map data stored in the storage device obtains a compensation ratio that matches the current temperature and / or the current humidity condition and calculates a compensation distance based on the obtained compensation ratio; and a driving device that controls the movi