Temperature controlled showerhead
First Claim
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1. A temperature-controlled, chandelier-type showerhead comprising:
- i) a stem comprising a convective cooling fluid passageway, wherein the stem is configured to be connected with a semiconductor processing chamber;
ii) a back plate thermally coupled to the stem; and
iii) a face plate thermally coupled to the back plate;
wherein;
the stem has a first end that is configured to connect with or protrude through a top of the semiconductor processing chamber when the temperature-controlled, chandelier-type showerhead is installed in the semiconductor processing chamber,the back plate is configured to be supported within the semiconductor processing chamber by the stem,the convective cooling fluid passageway includes an inlet and an outlet, andthe inlet and the outlet are both located in the first end.
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Abstract
A temperature controlled showerhead for chemical vapor deposition (CVD) chambers enhances heat dissipation to enable accurate temperature control with an electric heater. Heat dissipates by conduction through a showerhead stem and fluid passageway and radiation from a back plate. A temperature control system includes one or more temperature controlled showerheads in a CVD chamber with fluid passageways serially connected to a heat exchanger.
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Citations
20 Claims
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1. A temperature-controlled, chandelier-type showerhead comprising:
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i) a stem comprising a convective cooling fluid passageway, wherein the stem is configured to be connected with a semiconductor processing chamber; ii) a back plate thermally coupled to the stem; and iii) a face plate thermally coupled to the back plate; wherein;
the stem has a first end that is configured to connect with or protrude through a top of the semiconductor processing chamber when the temperature-controlled, chandelier-type showerhead is installed in the semiconductor processing chamber,the back plate is configured to be supported within the semiconductor processing chamber by the stem, the convective cooling fluid passageway includes an inlet and an outlet, and the inlet and the outlet are both located in the first end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification