[미국특허]
Apparatus for supercritical processing of a workpiece
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-021/00
C23C-016/00
출원번호
US-0384096
(2003-03-06)
§371/§102 date
20030317
(20030317)
발명자
/ 주소
Biberger, Maximilian Albert
Layman, Frederick Paul
Sutton, Thomas Robert
출원인 / 주소
Tokyo Electron Limited
대리인 / 주소
Haverstock &
인용정보
피인용 횟수 :
16인용 특허 :
185
초록▼
An apparatus for supercritical processing and non-supercritical processing of a workpiece comprises a transfer module, a supercritical processing module, a non-supercritical processing module, and a robot. The transfer module includes an entrance. The supercritical processing module and the non-supe
An apparatus for supercritical processing and non-supercritical processing of a workpiece comprises a transfer module, a supercritical processing module, a non-supercritical processing module, and a robot. The transfer module includes an entrance. The supercritical processing module and the non-supercritical processing module are coupled to the transfer module. The robot is preferably located within the transfer module. In operation, the robot transfers a workpiece from the entrance of the transfer module to the supercritical processing module. After supercritical processing, the robot then transfers workpiece from the supercritical processing module to the non-supercritical processing module. After the non-supercritical processing, the robot returns the workpiece to the entrance of the transfer module. Alternatively, the non-supercritical processing is performed before the supercritical processing.
대표청구항▼
1. An apparatus for supercritical processing of a workpiece, the apparatus comprising:a. a transfer module; b. a first supercritical processing module with a wafer cavity having a constant volume for holding the workpiece during processing, the first supercritical processing module configured to cyc
1. An apparatus for supercritical processing of a workpiece, the apparatus comprising:a. a transfer module; b. a first supercritical processing module with a wafer cavity having a constant volume for holding the workpiece during processing, the first supercritical processing module configured to cycle a pressure within the wafer cavity; c. an antechamber coupling the transfer module to a single processing module, wherein the single processing module is the first supercritical processing module and the antechamber is configured to withstand pressures above 1,000 psi; d. a first gate valve coupling the antechamber to the first supercritical processing module; e. a second processing module coupled to the transfer module, wherein the second processing module is one of a second supercritical processing module, a vacuum processing module, and an atmospheric processing module; f. a first transfer mechanism coupled to the transfer module, the transfer mechanism configured to move the workpiece between the transfer module and the antechamber; and g. a second transfer mechanism coupled to the antechamber and configured to move the workpiece between the antechamber and the first supercritical processing module. 2. The apparatus of claim 1, wherein the second processing module is one of an etch module, an electroplating module, a chemical mechanical planarization module, a photolithography module, a deposition module, and their combination.3. The apparatus of claim 2, wherein the deposition module is one of a physical vapor deposition module, a chemical vapor deposition module, and their combination.4. The apparatus of claim 1, further comprising a pressurizer coupled to the first supercritical processing module and configured to pressurize a material within the first supercritical processing module.5. The apparatus of claim 4, wherein the pressurizer comprises:a. a CO2 supply vessel; and b. a pump coupling to CO2 supply vessel to the first supercritical processing module. 6. The apparatus of claim 1, wherein the transfer module comprises a means for producing a vacuum within the transfer module.7. The apparatus of claim 6, wherein the transfer module further comprises a means for maintaining a pressure within the transfer module configured to be a slight positive pressure relative to the surrounding environment.8. The apparatus of claim 7, wherein the means for maintaining a slight positive pressure within the transfer module comprises an inert gas injection arrangement.9. The apparatus of claim 1, wherein the first transfer mechanism comprises a first robot.10. The apparatus of claim 9, wherein the second transfer mechanism comprises a second robot.11. The apparatus of claim 1, wherein the first supercritical processing module comprises:a. a plurality of inlets positioned along a circumference of the wafer cavity and configured to inject a supercritical material into the wafer cavity; and b. an outlet positioned along a top center of the wafer cavity and configured to exhaust the supercritical material from the wafer cavity. 12. The apparatus of claim 1, wherein the antechamber is sized to accommodate only a single workpiece.13. The apparatus of claim 1, further comprising a second gate valve coupling the transfer module to the antechamber.14. The apparatus of claim 13, wherein the first gate valve and the second gate valve are both configured to withstand pressures above 1,000 psi.15. The apparatus of claim 1, wherein the first supercritical processing module is sized to accommodate a wafer having a diameter larger than 8 inches.16. An apparatus for supercritical processing of a workpiece, the apparatus comprising:a. a transfer module; b. a first supercritical processing module with a wafer cavity defined by cavity walls, the wafer cavity for holding the workpiece during processing, the cavity walls remaining substantially rigid during processing; c. an antechamber coupling the transfer module to a single processing module, wherein the single processing module is the first supercritical processing module and the antechamber is configured to withstand pressures above 1,000 psi; d. a second processing module coupled to the transfer module, wherein the second processing module is one of a second supercritical processing module, a vacuum processing module, and an atmospheric processing module; e. a first transfer mechanism coupled to the transfer module, the transfer mechanism configured to move the workpiece between the transfer module and the antechamber; and f. a second transfer mechanism coupled to the antechamber and configured to move the workpiece between the antechamber and the first supercritical processing module.
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