Process chamber gas flow apparatus, systems, and methods

Patent metadata

Field	Value
Publication number	US-9429248-B2
Application number	US-201314091130-A
Country	US
Kind code	B2
Filing date	Nov 26, 2013
Priority date	Nov 30, 2012
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

Process chamber gas flow control apparatus having a tiltable valve are disclosed. The gas flow apparatus includes a process chamber adapted to contain a substrate, an exit from the process chamber including a valve seat, and a tiltable valve configured and adapted to tilt relative to the valve seat to control flow non-uniformities within the process chamber. Systems and methods including the tiltable valve apparatus are disclosed, as are numerous other aspects.

First claim

The invention claimed is:

1. A method of controlling flow of a process gas within a process chamber, comprising:
providing a process chamber adapted to contain a substrate;
providing a side opening adapted to allow the substrate to be provided to and withdrawn from the process chamber;
providing a process gas inlet to the process chamber;
providing a process gas exit including a valve seat and a tiltable valve; and
adjusting a flow pattern in the process chamber by tilting the tiltable valve relative to the valve seat.

2. A method of claim 1 , wherein the tilting of the tiltable valve comprises actuating the tiltable valve with a plurality of actuators.

3. A method of claim 1 , comprising accommodating rotational misalignment due to the tilting of the tiltable valve.

4. A method of claim 1 , comprising accommodating foreshortening due to the tilting of the tiltable valve.

5. A method of claim 1 , comprising substantially minimizing a non-uniformity in the flow pattern in the process chamber by the tilting of the tiltable valve.

6. A process chamber gas flow control apparatus, comprising:
a process chamber adapted to contain a substrate;
a side opening adapted to allow the substrate to be provided to and withdrawn form the process chamber;
a process gas inlet to the process chamber;
a process gas exit from the process chamber including a valve seat; and
a tiltable valve configured and adapted to tilt relative to the valve seat to control a gas flow pattern within the process chamber.

7. The process chamber gas flow control apparatus of claim 6 , comprising a substrate support upon which a substrate is adapted to rest, and the valve seat and tiltable valve are located below the substrate support.

8. The process chamber gas flow control apparatus of claim 6 , comprising a plurality of actuators that are operable to tilt the tiltable valve relative to the valve seat.

9. The process chamber gas flow control apparatus of claim 6 , comprising a coupling adapted to accommodate foreshortening due to tilting of the tiltable valve.

10. The process chamber gas flow control apparatus of claim 9 , wherein the coupling comprises a spherical joint and a linear slide.

11. The process chamber gas flow control apparatus of claim 6 , comprising a flexure adapted to accommodate foreshortening due to tilting of the tiltable valve.

12. The process chamber gas flow control apparatus of claim 11 , wherein the flexure comprises double start machined spring member.

13. The process chamber gas flow control apparatus of claim 6 , comprising:
a tiltable valve assembly including:
the tiltable valve;
an actuator adapted to tilt the tiltable valve;
a support member coupled to the tiltable valve;
a flexure coupled to the support member; and
an actuator rod coupled to the actuator and the flexure.

14. The process chamber gas flow control apparatus of claim 13 , comprising:
a bellows that seals between the actuator rod and a housing including the process chamber.

15. The process chamber gas flow control apparatus of claim 6 , comprising a support member coupled to the tiltable valve.

16. The process chamber gas flow control apparatus of claim 6 , wherein the tiltable valve comprises a solid disc.

17. The process chamber gas flow control apparatus of claim 6 , comprising:
a plurality of support members coupled to the tiltable valve; and
an actuator coupled to each one of the plurality of support members.

18. The process chamber gas flow control apparatus of claim 6 , comprising:
a plurality of actuators operable to tilt the tiltable valve; and
a combination ball joint and linear slide coupled to the tiltable valve and adapted to accommodate angular misalignment and foreshortening displacement due to the tilt.

19. The process chamber gas flow control apparatus claim 6 , comprising:
one or more bellows that:
seal between a support member and the tiltable valve, or
seal between a bottom of a housing and the support member.

20. An electronic device processing system, comprising:
a process chamber adapted to contain a substrate;
a side opening adapted to allow the substrate to be provided to and withdrawn from the process chamber;
a process gas inlet to the process chamber; and
a process gas exit from the process chamber including a valve seat and a tiltable valve, the tiltable valve being configured and adapted to tilt relative to the valve seat to adjust a gas flow pattern within the process chamber.

Assignees

• Applied Materials Inc

Inventors

• Merry Nir
• Sapkale Chandrakant M
• Muthukamtchi Karuppasamy
• Hudgens Jeffrey C
• Kankanala Penchala N

Classifications

• C23C16/4412

  Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps · CPC title

• Y10T137/8593

  Systems · CPC title

• F16K51/02 Primary

  specially adapted for high-vacuum installations · CPC title

• F16K1/24

  with valve members that, on opening of the valve, are initially lifted from the seat and next are turned around an axis parallel to the seat · CPC title

• F16K51/00 Primary

  Other details not peculiar to particular types of valves or cut-off apparatus · CPC title