Patent ID: 9016998
Filing Date: 2015-04-28
Classification: H01L,Y10S

Abstract:
1. A load lock comprising: a top wall comprising a recessed central portion and a lip surrounding the recessed central portion; a bottom wall configured to hold a workpiece; a plurality of side walls, wherein the top wall, the bottom wall and the side walls define an upper chamber; a valve in communication with the upper chamber and in communication with a pump to extract air from the upper chamber; a first actuator to move the top wall between a first open position and a second closed position, where the recessed central portion fills a portion of the upper chamber and the lip rests on a top surface of the side walls; and a second actuator in communication with the bottom wall to move the bottom wall between a first position, where the bottom wall, the side walls and the top wall form a sealed upper chamber, and a second position, lower than the first position.