Patent ID: 9484213
Filing Date: 2016-11-01
CPC Classification: H01J,H01L

Claim Text:
1. A processing gas diffusing and supplying unit, provided in a substrate processing unit including a processing chamber for accommodating a substrate and a first and a second processing gas introducing pipe, for supplying a processing gas into the processing chamber, the processing gas diffusing and supplying unit comprising: a main body; a plate supported by the main body, the plate having a plurality of gas supply holes for supplying the processing gas into the processing chamber; a partition wall; an internal space formed in the main body, the internal space having a first and a second space partitioned by the partition wall and the processing gas being supplied through the first and the second processing gas introducing pipe to the internal space; a first opening communicating with the first space while facing the plate, the first opening being connected to the first processing gas introducing pipe; a second opening communicating with the second space while facing the plate, the second opening being connected to the second processing gas introducing pipe; a first shielding portion installed in the first space, the first shielding portion having a surface opposite to the first opening; and a second shielding portion installed in the second space, the second shielding portion having a surface opposite to the second opening, wherein a height of the internal space is equal to or greater than 8 mm so that the processing gas discharged from the first and the second opening is diffused to the first and the second space and is uniformly supplied through the gas supply holes, wherein the first shielding portion and the second shielding portion are strip elements extending more in a radial direction than a lateral direction, and wherein the second shielding portion is supported only by the partition wall.