Patent ID: 7030475
Filing Date: 2006-04-18
Classification: C23C

Abstract:
1. An apparatus for forming a thin film comprising: a reaction chamber; a wafer holder for supporting a wafer, the wafer holder being disposed in the reaction chamber; and a gas-supplying unit extended into the reaction chamber, to supply a gas, wherein the flow rate of the supplied gas at the central portion of the wafer is greater than the flow rate of the supplied gas at a peripheral portion of the wafer, wherein the gas-supplying unit includes a plurality of first injectors that are positioned to be above the peripheral portion of the wafer and adjacent to the peripheral portion of the wafer and extending into the interior of the reaction chamber, and a plurality of second injectors that are positioned to be above the central portion of the wafer and adjacent to the central portion of the wafer and extending into the interior of the reaction chamber, and wherein at least one of the first injectors and at least one of the second injectors grouped with the at least one of the first injectors form at least one injector unit, the grouped at least one of the first injectors and the at least one of the second injectors being adjacent to and parallel with each other, wherein a plurality of injector units are disposed on the inside of the reaction chamber, and wherein the plurality of injector units are positioned to substantially surround the wafer.