Patent ID: 6887315
Filing Date: 2005-05-03
Classification: C23C,Y10S

Abstract:
1. A vacuum plate for a fabricating apparatus of a semiconductor device, the vacuum plate comprising: a first vacuum panel having a plurality of exhaust holes, the plurality of exhaust holes having same area and same distance from a center of the first vacuum panel, the plurality of exhaust holes being symmetrical and spaced apart from each other; a second vacuum panel having a pumping hole; a sidewall and an air-load block, the sidewall extending vertically along an edge of the second vacuum panel, the air-load block extending vertically and symmetrically, a bottom surface of the first vacuum panel contacting a top surface of the sidewall and a top surface of the air-load block, wherein the first and second vacuum panels form first and second concave portions coupling between the exhaust holes and the pumping hole, and wherein the concave portions have a same size; and wherein the plurality of exhaust holes comprises a plurality of first exhaust holes and a plurality of second exhaust holes, wherein the first concave portion encompasses exclusively the plurality of first exhaust holes and the second concave portion encompasses exclusively the plurality of second exhaust holes.