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:
An electrostatic chuck has an electrode capable of being electrically charged to electrostatically hold a substrate. A composite layer covers the electrode. The composite layer comprises (1) a first dielectric material covering a central portion of the electrode, and (2) a second dielectric material covering a peripheral portion of the electrode, the second dielectric material having a different composition than the composition of the first dielectric material. The chuck is useful in a plasma process chamber to process substrates, such as semiconductor wafers.
摘要:
An electrostatic chuck 55 has an electrostatic member 100 including a dielectric 115 having a surface 120 adapted to receive the substrate 30. The dielectric 115 covers an electrode 105 that is chargeable to electrostatically hold the substrate 30. A support 190 below the electrostatic member 100 has a cavity 300 adapted to hold a gas to serve as a thermal insulator to regulate the flow of heat from the electrostatic chuck 55 to a surface 120 of the chamber 25. The cavity 300 has a cross-sectional profile that is shaped to provide a predetermined temperature profile across the substrate 30.
摘要:
A process chamber 55 for processing a semiconductor substrate 60 in a plasma, comprises a process gas distributor 100 for distributing process gas into a plasma zone 65 in the chamber. An inductor antenna 135 is used to form an inductive plasma from the process gas in the plasma zone. A primary bias electrode 145 on a ceiling 140 of the chamber 55 has a conducting surface 150 exposed to the plasma zone 65. A dielectric member 155 comprising a power electrode 165 embedded therein, has a receiving surface for receiving a substrate 60. A secondary bias electrode 170 below the dielectric member 155 has a conducting surface 175 exposed to the plasma zone 65. An electrode voltage supply 180 maintains the power electrode 165, primary bias electrode 145, and secondary bias electrode 170, at different electrical potentials to provide a high density, highly directional, plasma in the plasma zone 65 of the chamber 55.
摘要:
A failure resistant electrostatic chuck 20 for holding a substrate 35 during processing of the substrate 35, is described. The chuck 20 comprises a plurality of electrodes 25 covered by an insulator 30, the electrodes 25 capable of electrostatically holding a substrate 35 when a voltage is applied thereto. An electrical power bus 40 has a plurality of output terminals 45 that conduct voltage to the electrodes 25. Fuses 50 electrically connect the electrodes 25 to the output terminals 45 of the power bus 40, each fuse 50 connecting at least one electrode 25 in series to an output terminal from the power bus 40. The fuses 50 are capable of electrically disconnecting the electrode 25 from the output terminals 45 when the insulator 30 punctures and exposes the electrode 25 to the process environment causing a current to flow through the fuse 50. A current detector 175 and electrical counter 180 can be used to provide early detection and counting of the number of failures of the electrodes 25 by detecting the current discharges through the fuses 50.
摘要:
A semiconductor wafer support chuck having small diameter gas distribution ports for heat transfer gas. The diameter ports inhibit plasma ignition in heat transfer gas distribution channels. The ports are less than 20 mils in diameter less than 3 mm in length. The short length of the ports facilitates fabrication of multiple ports of very small diameter. The ports communicate with a gas distribution plenum integrated into the body of the chuck beneath a wafer support surface. The plenum has radial channels and a peripheral groove for distributing heat transfer gas to the wafer support surface.
摘要:
An electrostatic chuck 55 comprises an electrical connector 140 which is connected to the electrode 105 to conduct an electrical charge to the electrode 105. The electrical connector 140 comprises a refractory metal having a melting temperature of at least about 1500° C., such as for example, tungsten, titanium, nickel, tantalum, molybdenum, or alloys thereof. Preferably, the electrical connector 140 is bonded to the electrode 105 by a metal having a softening temperature of less than about 600° C., such as aluminum, indium, or low melting point alloys.
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.