Patent ID: 8623455

Claim:
A method of controlling an evaporation coating device, comprising the steps of: providing an evaporation coating device including a plurality of evaporation sources, a rotating part adapted to rotate the plurality of evaporation sources, and a coating block plate adapted to block all but one of said plurality of evaporation sources at any time, wherein each of the plurality of evaporation sources comprises a case, a melting pot arranged within said case, an evaporation material arranged within the melting pot, and a heating device arranged outside the melting pot and adapted to heat and evaporate the evaporation material; heating said one of said plurality of evaporation sources not blocked by said coating block plate while preliminarily heating an adjacent one of said plurality of evaporation sources; rotating the plurality of evaporation sources by an angle θ so that said adjacent one of said plurality of evaporation sources is no longer blocked by said coating block plate, said angle θ being equal to 360°×((t−1)/s) where t and s satisfy 0<((t−1)/s)≦1.0, and where s is a total number of evaporation sources, t is a natural number, and 360° is the angle acquired when n th evaporation is rotated one time, wherein the case has a dual structure comprising an inner wall, an outer wall and a closed space between the inner wall and the outer wall, the case having a plurality of cooling inductive pipes arranged in a serpentine manner within the closed space for supplying cooling water to the closed space, each cooling inductive pipe of said plurality of cooling inductive pipes being confined to a portion of the closed space and having its own supply pipe for supplying cooling water and its own discharge pipe for discharging water that has absorbed heat, wherein each of the cooling inductive pipes of the plurality cooling inductive pipes has at least four “U” shaped turns, wherein the supply pipe and the discharge pipe are on opposite ends of a top and a bottom of the case, and wherein the plurality cooling inductive pipes entirely cover an interior of the case.