Patent ID: 9028765
Filing Date: 2015-05-12
Classification: H01J,H01L,Y02C

Abstract:
1. An exhaust baffle for a process chamber for a semiconductor process, the process chamber having a) a gas inlet region configured to flow process gases into the process chamber, across a window of the chamber, and between the window and a pedestal within the process chamber and b) a gas exhaust region configured to evacuate the gas flowed into the process chamber via the gas inlet region from the process chamber, the exhaust baffle comprising: a base surface inscribed in a triangular region, the base surface having a first side edge, a second side edge, and an inlet edge; an exhaust aperture in the base surface and located opposite the inlet edge; a raised profile section located along the inlet edge, the raised profile section having an upper surface offset from the base surface by a first distance, wherein the exhaust baffle is configured to interface with at least one other component in the gas exhaust region of the process chamber such that the base surface is offset from the at least one other component in the gas exhaust region of the process chamber by a second distance and such that the first distance is at least 50% of the second distance.