Patent ID: 6210754
Filing Date: 2001-04-03
Classification: C23C,H01L

Abstract:
A method for aligning a heater platform parallel to a lower surface of a shower head positioned approximately parallel above it, inside a PVD or CVD deposition chamber, the method comprising:providing a plurality of level-adjusting devices mounted on the heater platform, wherein the turning of one or more of the level-adjusting devices allows to position the heater platform relative to the lower surface of the shower head, and wherein no level-adjusting device is mounted on the shower head;providing a plurality of displacement gauges located between the heater platform and the lower surface of the shower head, each being located subtantially aligned to a level-adjusting device and measuring the distance between two opposite points upon the lower surface of the shower head and the heater platform;operating the level-adjusting devices to adjust the position of the heater platform so that the displacement gauges substantially indicate a same predetermined value.