Vaporization and deposition apparatus
First Claim
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1. A process chamber for depositing a film, comprising:
- a) a chamber body forming an enclosure having one or more temperature controlled surfaces;
b) a lid movably mounted on the chamber body, the lid having a heated main body and an outer temperature controlled collar;
c) a heated gas distribution assembly comprising a gas manifold connected to a gas distribution member, the gas manifold adapted to deliver one or more gases into the gas distribution member, and;
d) an exhaust port connected to the chamber body, the exhaust port having a temperature controlled liner disposed therein.
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Abstract
The invention relates to an apparatus and process for the vaporization of liquid precursors and deposition of a film on a suitable substrate. Particularly contemplated is an apparatus and process for the deposition of a metal-oxide film, such as a barium, strontium, titanium oxide (BST) film, on a silicon wafer to make integrated circuit capacitors useful in high capacity dynamic memory modules.
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Citations
47 Claims
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1. A process chamber for depositing a film, comprising:
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a) a chamber body forming an enclosure having one or more temperature controlled surfaces;
b) a lid movably mounted on the chamber body, the lid having a heated main body and an outer temperature controlled collar;
c) a heated gas distribution assembly comprising a gas manifold connected to a gas distribution member, the gas manifold adapted to deliver one or more gases into the gas distribution member, and;
d) an exhaust port connected to the chamber body, the exhaust port having a temperature controlled liner disposed therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
a) one or more inlets;
b) a temperature controlled body member defining a plurality of fluid passages having a plurality of vaporizing surfaces disposed therein; and
c) one or more outlets connected to the one or more fluid passages.
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24. The chamber of claim 23 wherein the body member of the vaporizer includes one or more heating elements connected thereto.
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25. The chamber of claim 24 wherein the vaporizer further comprises one or more thermocouples disposed therein to monitor the temperature of the vaporizer.
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26. The chamber of claim 23 wherein the inlet comprises a nozzle and a circumferential fluid passage disposed around the nozzle and the plurality of vaporizing surfaces comprise a plurality of fins disposed along one or more fluid passages.
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27. The chamber of claim 22 further comprising one or more pressurized ampules connected to the vaporizer.
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28. The chamber of claim 27 wherein the one or more ampules have a tapered inner chamber lower portion.
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29. The chamber of claim 28 wherein the ampule further comprises a volume detector.
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30. The chamber of claim 29 wherein the volume detector comprises an ultra-sonic type detector.
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31. The chamber of claim 27 wherein the ampule is chargeable up to about 500 psig.
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32. The chamber of claim 23 further comprising a bypass line connected between the one or more outlets of the vaporizer and the one or more fluid channels formed in the chamber body.
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33. The chamber of claim 32 wherein the bypass line is connected to an exhaust pump and a cold trap is disposed in the bypass line upstream from the exhaust pump.
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34. The chamber of claim 33 further comprising a valve member disposed between the outlet, the fluid channels and the bypass line.
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35. The chamber of claim 1 further comprising a substrate support member disposed in the chamber.
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36. The chamber of claim 35 wherein the substrate support member comprises an electrode disposed therein and a power source connected to the electrode.
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37. The chamber of claim 36 further comprising a shield ring disposed in the chamber around the edge of the substrate support member.
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38. The chamber of claim 37 wherein the shield ring is comprised of a material having a coefficient of expansion approximately equal to that of the deposition material.
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39. The chamber of claim 38 wherein the shield ring is comprised of a material selected from the group comprising titanium, aluminum oxide, or combinations thereof.
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40. The chamber of claim 5 wherein the seal formed between the heated gas passages and the gas manifolds comprise a spring loaded seal.
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41. The chamber of claim 40 wherein the spring loaded seal is comprised of Teflon.
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42. The chamber of claim 1 further comprising first and second exhaust passages disposed in the exhaust port.
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43. The chamber of claim 42 further comprising a high vacuum pump connected to the first exhaust passage and selectively isolatable therefrom by a valve member.
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44. The chamber of claim 43 further comprising an exhaust pump connected to the second exhaust passage.
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45. The chamber of claim 44 further comprising a removable cold trap disposed between the exhaust pump and the exhaust port.
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46. The chamber of claim 43 wherein the valve member comprises a gate valve.
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47. The chamber of claim 3 wherein the gas distribution assembly is mounted on the lid and forms a seal with the heated gas passages to provide sealed fluid flow therebetween.
Specification