Patent ID: 9051647
Filing Date: 2015-06-09
Classification: C23C,H01J,H01L

Abstract:
1. A gas injector for supplying process gas into a semiconductor processing chamber comprising: an injector body which includes at least first and second gas inlets in an upper portion of an outer side surface of the injector body, at least first and second gas passages which receive a same gas, wherein the first gas passage is a central passage and the second gas passage is an annular passage surrounding the central passage, and at least first and second gas outlets, the first gas passage being in fluid communication with the first inlet and first outlet, the second gas passage being in fluid communication with the second inlet and second outlet, the first and second gas passages being discrete from each other so as to provide independently adjustable flow rates of the same gas through the first and second outlets, the first gas outlet comprising at least one on-axis gas outlet in an axial end of the injector body and the second gas outlet comprising a plurality of off-axis gas outlets in a lower portion of the side surface of the injector body which inject process gas in a plurality of directions.