摘要:
A substrate support assembly for supporting a substrate during processing is provided. In one embodiment, a support assembly includes a ceramic body having an embedded heating element and a base plate. The base plate and the ceramic body define a channel therebetween adapted to supply purge gas to a perimeter of a substrate disposed on the support assembly. The base plate is fastened to the body by brazing, adhering, fastening, press fitting or by mating engaging portions of a retention device such as a bayonet fitting.
摘要:
A substrate processing chamber has a substrate support, a gas supply, a gas exhaust, a gas energizer, and a wall about the substrate support, the wall having a porous ceramic material at least partially infiltrated with a fluorinated polymer, whereby a substrate on the substrate support may be processed by gas introduced by the gas supply, energized by the gas energizer, and exhausted by the gas exhaust.
摘要:
Apparatus for processing semiconductor wafers includes a processing chamber, a chuck within the chamber for supporting a wafer during processing, a fiberoptic cable having a first end positioned at the surface of the chuck, and an optical pyrometer connected to a second end of the cable. The optical pyrometer measures the temperature of a wafer during processing and measures in situ temperature of plasma-excited cleaning gas introduced into the chamber during subsequent cleaning from walls thereof of unwanted solid deposits within the chamber. The pyrometer is connected to a computer which controls the flow of cleaning gases. When the temperature of the plasma-excited gas reaches a steady-state value the computer stops the flow of cleaning gases into the chamber and thereby stops the cleaning operation.
摘要:
An electrostatic chuck 55 for holding a substrate 30 comprises an electrostatic member 100 made from a dielectric 115 covering an electrode 105 that is chargeable to electrostatically hold the substrate 30. A base 175 that includes a heater 235 is joined to the electrostatic member 100. The base may be made from a composite material, such as a porous ceramic infiltrated with the metal, and may be joined to the electrostatic member by a bond layer.
摘要:
A chamber 30 for processing a substrate 25 comprises a support 55 comprising a dielectric 60 enveloping an electrode 70. The electrode 70 may be chargeable to electrostatically hold the substrate 25 or may be chargeable to form an energized gas in the chamber 30 to process the substrate 25. A base 130 is below the support 55, and a compliant member 300 is positioned between the support 55 and the base 130. The compliant member 300 may be adapted to alleviate thermal stresses arising from a thermal expansion mismatch between the dielectric 60 and the base 130.
摘要:
An electrostatic chuck 100 useful for holding a substrate 55 in a high density plasma, comprises an electrode 110 at least partially covered by a semiconducting dielectric 115, wherein the semiconducting dielectric 115 may have an electrical resistance of from about 5×109 &OHgr;cm to about 8×1010 &OHgr;cm.
摘要:
A semiconductor wafer chuck for retaining a semiconductor wafer during semiconductor wafer processing in a semiconductor wafer processing system including a connector connecting DC chucking voltage and RF biasing power to an electrode embedded in the body of the chuck. The connector for the chuck includes two or more members joined by resilient banana connections. The connector may be adapted for use as a high temperature connector for an electrostatic chuck operated at an elevated temperature and such connector includes a thermal impedance for reducing the heat transferred from the chuck to the bottom of the connector.
摘要:
An electrostatic chuck 20 for holding a substrate 25 in a process chamber 30 comprises an electrostatic member 115 comprising a polymer 120 covering an electrode 125, the polymer 120 having a receiving surface 135 for receiving the substrate 25. A heater 130 abutting the polymer 120 is provided to heat the substrate 25 during processing of the substrate 25. The heater 130 has a resistance that is sufficiently low to heat the substrate 25 without causing excessive thermal degradation of the polymer 120.
摘要:
A method of forming an electrostatic chuck 20 for holding substrates 42 in a process chamber 40 containing a magnetic flux 43 is described. The method comprises the steps of forming a base 22 for supporting a substrate 42. An insulator 26 with an electrode 24 therein, is formed on the base 22. A magnetic shunt 34 comprising a ferromagnetic material is formed either (i) on the base 22, or (ii) in the insulator 26, or (iii) directly below, and contiguous to, the base 22.
摘要:
An electrostatic chuck for securing a semiconductor wafer on a pedestal having multiple apertures for the introduction of cooling gas beneath the wafer. The multiple apertures reduce overheating near the wafer edge and provide lower temperature gradients across the wafer. The wafer is held by electrostatic force against a laminate of an electrode layer sandwiched between two dielectric layers in such a way that the laminate presents a planar surface to the wafer for a substantial distance beyond the outer edge of the electrode layer. The laminate construction ensures that a large wafer area beyond the outer edge of the electrode is in contact with the laminate, to minimize cooling gas leakage near the edge, and provides a longer useful life by increasing the path length of dielectric material between the electrode layer and potentially damaging plasma material surrounding the chuck.