Patent ID: 11929242
Assignee: SKY TECH INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 7:
8. A shielding mechanism adapted to a thin-film-deposition equipment, comprising:
a first-shield member;
a second-shield member, wherein each of the first-shield member and the second-shield member is formed as a half round plate, and each of the first-shield member and the second-shield member has a bottom surface formed with at least one cavity to reduce weights of the first-shield member and the second-shield member, wherein the first-shield member and the second-shield member arranged on a same plane; and
a first-connecting arm for carrying the first-shield member; and
a second-connecting arm for carrying the second-shield member;

at least one driver comprising:
a shaft seal that interconnects the first-shield member and the second-shield member; wherein the shaft seal comprises an outer tube and a main shaft contained within the outer tube;
at least one motor that is connected to the shaft seal and that respectively drives and swings the first-shield member and the second-shield member in opposite directions synchronously to switch between an open state and a shielding state via the shaft seal;
wherein in the open state, the first-shield member and the second-shield member swing away from each other to have an open space therebetween; and
wherein in the shielding state, the first-shield member and the second-shield member approach each other to form a round plate as a whole shield to shield a carrier, wherein the first shield member and the second shield member operating in the shielding state are not in direct contact to form a distance therebetween in the same plane that the first shield member and the second shield member are arranged on, and the distance is less than 1 mm;
wherein the main shaft is connected to the first-shield member via the first-connecting arm, the outer tube is connected to the second-shield member via the second-connecting arm, and the at least one motor drives the main shaft and the outer tube to rotate to respectively swing the first-shield member and the second-shield member in the opposite directions synchronously;
wherein the first-connecting arm includes a first protrusion with a first-reflective surface thereon perpendicular to an extending direction of the first-connecting arm, the second-connecting arm includes a second protrusion with a second-reflective surface thereon perpendicular to an extending direction of the second-connecting arm;
wherein the shielding mechanism further comprises:
a first-distance sensor disposed on side of the first-shield member, wherein the first-distance sensor emits and projects a first-optical beam onto the first-reflective surface when the first-shield member is operated in the shielding state; and
a second-distance sensor disposed on side of the second-shield member, wherein the second-distance sensor emits and projects a second-optical beam onto the second-reflective surface when the second-shield member is operated in the shielding state.