METHOD FOR CONTROLLING SUBSTRATE CARRIER OF DEPOSITION APPARATUS

A method for a deposition apparatus is disclosed. The deposition apparatus includes a chamber, a substrate carrier, a blocker and a cover ring. The cover ring is disposed on the blocker. The substrate carrier carries a wafer and moves with respect to the blocker. A position where the substrate carrier contacts the cover ring start is defined as a contact position, and a first position below the contact position and a second position above the contact position are also defined. When the reaching the first position, a movement speed of the substrate carrier is decreased, and the substrate carrier carries the cover ring to move away from the blocker. When reaching the second position, the movement speed of the substrate carrier away from the blocker is increased. Collision between the wafer and the deposition apparatus is eliminated to prevent undesired particles from occurring and the wafer from being damaged.