Gas distribution plate assembly for large area plasma...

Adhesive bonding and miscellaneous chemical manufacture – Differential fluid etching apparatus – With gas inlet structure

Reexamination Certificate

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C156S345330, C118S715000

Reexamination Certificate

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06942753

ABSTRACT:
Embodiments of a gas distribution plate for distributing gas in a processing chamber are provided. In one embodiment, a gas distribution plate includes a diffuser plate having a plurality of gas passages passing between an upstream side and a downstream side of the diffuser plate. At least one of the gas passages includes a first hole and a second hole coupled by an orifice hole. The first hole extends from the upstream side of the diffuser plate while the second hole extends from the downstream side. The orifice hole has a diameter less than the respective diameters of the first and second holes.

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