摘要:
A toroidal plasma source (28) within a substrate processing chamber (10). The toroidal plasma source forms a poloidal plasma with theta symmetry. The poloidal plasma current is essentially parallel to a surface of the plasma generating structure, thus reducing sputtering erosion of the inner walls. The plasma current is similarly essentially parallel to a process surface (32) of a substrate (34) within the chamber. In a further embodiment, a shaped member (66) between the substrate and the plasma source controls the plasma density in a selected fashion to enhance plasma processing uniformity.
摘要:
A method of cleaning a semiconductor processing chamber uses as a cleaning gas precursor an iodine fluoride such as IF5 and IF7. Reactive species are generated from the precursor with help of plasma. These reactive species are further used to clean the processing chamber.
摘要:
An effluent abatement system 200 that may be used to abate F2 gas content of effluent exhausted from a process chamber 35, such as effluent from a CVD chamber cleaning process includes a catalytic reactor 250 to reduce the content of F2 in the effluent 100. The system may further include a prescrubber 230 to add reactive gases to the effluent 100 and/or to treat the effluent 100 prior to treatment in the catalytic reactor 250. Alternatively reactive gases can be added to the effluent 100 by a gas source 220.
摘要:
A temperature control system 145 is used to control the temperature of a process chamber 25 during processing of a semiconductor substrate 70. The temperature control system 145 comprises a heat exchanger plate 155 for removing heat from the chamber 25, and a heat transfer member 158 for conducting heat to the heat exchanger plate 155. The heat transfer member 158 comprises a lower heat conduction surface 205 bonded to an external surface of the chamber 25, and an upper heat transmitting surface 210 thermally coupled to the heat exchanger plate 155. Preferably, the temperature control assembly comprises a heater 150 for heating the chamber 25, and a computer control system 165 for regulating the heat removed by the heat exchanger plate 155 as well as the heat supplied by the heater 150, to maintain the chamber 25 at substantially uniform temperatures.
摘要:
An electrostatic chuck and a process of manufacturing an electrostatic chuck for supporting a semiconductor wafer during wafer processing and for providing a plurality of gas inlet channels extending through the chuck and through which thermal transfer gas can be supplied to the back side of the wafer to enhance the thermal transfer between the wafer and the chuck, embedding a plurality of inserts in a ceramic electrostatic chuck, each insert comprising a matrix of the ceramic of which the electrostatic chuck is made and a plurality of removable elongate members, and removing the elongate members to form a plurality of elongate holes providing the plurality of gas inlet channels.
摘要:
A stand-off pad, and method of fabricating the same, for supporting a workpiece in a spaced apart relation to a workpiece support chuck. More specifically, the wafer stand-off pad is fabricated of a polymeric material, such as polyimide, which is disposed upon the support surface of the chuck. The stand-off pad maintains a wafer, or other workpiece, in a spaced apart relation to the support surface of the chuck. The distance between the underside surface of the wafer and the chuck is defined by the thickness of the stand-off pad. This distance should be larger than the expected diameter of contaminant particles that may lie on the surface of the chuck. In this manner, the contaminant particles do not adhere to the underside of the wafer during processing and the magnitude of the chucking voltage is maintained between the workpiece and the chuck.
摘要:
A puncture resistant electrostatic chuck (20) is described. The chuck (20) comprises at least one electrode (25); and a composite insulator (30) covering the electrode. The composite insulator comprises a matrix material having a conformal holding surface (50) capable of conforming to the substrate (35) under application of an electrostatic force generated by the electrode to reduce leakage of heat transfer fluid held between the substrate and the holding surface. A hard puncture resistant layer, such a layer of fibers or an aromatic polyamide layer, is positioned below the holding surface (50) and is sufficiently hard to increase the puncture resistance of the composite insulator.
摘要:
An electrostatic chuck (20) for holding a substrate (75) comprises (i) a base (80) having an upper surface (95) with grooves (85) therein, the grooves (85) sized and distributed for holding coolant for cooling a substrate (75), and (ii) a substantially continuous insulator film (45) conformal to the grooves (85) on upper surface (95) of the base (80). The base (80) can be electrically conductive and capable of serving as the electrode (50) of the chuck (20), or the electrode (50) can be embedded in the insulator film (45). The insulator film (45) has a dielectric breakdown strength sufficiently high that when a substrate (75) placed on the chuck (20) and electrically biased with respect to the electrode (50), electrostatic charge accumulates in the substrate (75) and in the electrode (50) forming an electrostatic force that attracts and holds the substrate (75) to the chuck (20). Preferably the chuck (20) is fabricated using a pressure forming process, and more preferably using a pressure differential process.
摘要:
A puncture resistant electrostatic chuck (20) is described. The chuck (20) comprises at least one electrode (25); and a composite insulator (30) covering the electrode. The composite insulator comprises a matrix material having a conformal holding surface (50) capable of conforming to the substrate (35) under application of an electrostatic force generated by the electrode to reduce leakage of heat transfer fluid held between the substrate and the holding surface. A hard puncture resistant layer, such a layer of fibers or an aromatic polyamide layer, is positioned below the holding surface (50) and is sufficiently hard to increase the puncture resistance of the composite insulator.
摘要:
A continuous in situ process of deposition, etching, and deposition is provided for forming a film on a substrate using a plasma process. The etch-back may be performed without separate plasma activation of the etchant gas. The sequence of deposition, etching, and deposition permits features with high aspect ratios to be filled, while the continuity of the process results in improved uniformity.