Patent ID: 7628863
Filing Date: 2009-12-08
Classification: H01L

Abstract:
1. A chamber for chemical vapor deposition on a substrate in a processing region, comprising: a chamber body having a processing region defined therein; a chamber lid disposed on the chamber body; a gas distribution assembly coupled to the chamber lid, the gas distribution assembly comprising a face plate and a base plate, the face plate having a center gas passage region, a cylindrical wall extending upwards from an outer portion of the center gas passage region, and an annular flange extending outward from the cylindrical wall, the base plate having a flange concentrically stacked with the flange of the face plate, the flanges supported above the chamber lid; a gas box defined in the gas distribution assembly between the face plate and base plate, wherein the gas box directs gas into the processing region through the center gas passage region of the face plate; and a heated annular insert coupled to the flange of the base plate of the gas distribution assembly vertically above the flange of the face plate, the insert arranged to heat the gas box and the face plate, wherein the heated annular insert is concentric with the face plate and vertically spaced from the lid.