Abstract:
An electrostatic chuck suitable for use at high temperatures having a replaceable expansion assembly, functioning as an outer tubulation and heat choke, between a chuck body and a heat transfer body. The expansion assembly accommodates differential thermal stresses between the chuck body and the heat transfer body, and/or limits direct heat conduction from the chuck body to the heat transfer body. The ability to operate the chuck at temperatures in excess of 200 DEG C allows it to be used for plasma etching of materials, such as platinum, which require high temperatures to volatilize low volatility etch products as well as routine plasma etching, chemical vapor deposition, sputtering, ion implantation, ashing, etc. The novel design of the removably attached expansion assembly allows the chuck to be scaled for larger workpieces, to remain serviceable through more heating cycles, and to be economically serviced.
Abstract:
An apparatus to supply a plurality of process fluids for processing a substrate in a semiconductor processing chamber is disclosed. The apparatus includes a plurality of process fluid supply valves and a fluid supply network that is defined between a crossover valve and a tuning supply valve. The apparatus further includes a tuning fluid supply being connected to the fluid supply network through the tuning supply valve. Further included with the apparatus is a plurality of process fluids that are connected to the fluid supply network through the plurality of process fluid supply valves. A process chamber that has a substrate support is also included in the apparatus. The process chamber further including an edge fluid supply and a center fluid supply, the edge fluid supply connected to the fluid supply network through an edge enable valve and the center supply connected to the fluid supply network through a center enable valve. Wherein the crossover valve, edge enable valve, and center enable valve allow one of tuning fluid or process fluids to flow to one of the edge fluid supply or the center fluid supply.
Abstract:
PROBLEM TO BE SOLVED: To provide a high-temperature electrostatic chuck. SOLUTION: This electrostatic chuck has an expansion joint between a chuck and a heat transfer body. The expansion joint provides a hermetic seal, absorbs the difference in thermal expansion between the chuck and heat transfer body, and/or controls the quantity of heat conducted from the chuck to the heat transfer body. A plenum provided between surface of the chuck and the surface of the heat transfer body separated from the surface of the chuck is filled with a heat transfer gas which is made to pass through a gas passage, such as the lift pin hole of the chuck for cooling the back face of a substrate supported on the chuck. The heat transfer gas in the plenum conducts heat from the chuck to the heat transfer body. Since this chuck can operate at a temperature of >200 deg.C, the chuck can be used for plasma etching of a noble metal, such as Pt, etc., which is required to be etched at a high temperature for evaporating a low-volatility etched product.
Abstract:
An electrostatic chuck suitable for use at high temperatures having a replaceable expansion assembly, functioning as an outer tubulation and heat choke, between a chuck body and a heat transfer body. The expansion assembly accommodates differential thermal stresses between the chuck body and the heat transfer body, and/or limits direct heat conduction from the chuck body to the heat transfer body. The ability to operate the chuck at temperatures in excess of 200° C. allows it to be used for plasma etching of materials, such as platinum, which require high temperatures to volatilize low volatility etch products as well as routine plasma etching, chemical vapor deposition, sputtering, ion implantation, ashing, etc. The novel design of the removably attached expansion assembly allows the chuck to be scaled for larger workpieces, to remain serviceable through more heating cycles, and to be economically serviced.
Abstract:
An electrostatic chuck for use in a plasma chamber where etching or deposition processes are carried out on semiconductor wafers is composed of a chuck body (56) with an electrode (60) to clamp a wafer (30) electrostatically and a heat transfer body (58). A plenum (80) is established between surfaces of the chuck body (56) and the heat transfer body (58). An expansion joint (64) attaches the chuck and heat transfer bodies together and accommodate differential thermal expansion thereof while maintaining a seal during thermal cycles.
Abstract:
An electrostatic chuck for use in a plasma chamber where etching or deposition processes are carried out on semiconductor wafers is composed of a chuck body (56) with an electrode (60) to clamp a wafer (30) electrostatically and a heat transfer body (58). A plenum (80) is established between surfaces of the chuck body (56) and the heat transfer body (58). An expansion joint (64) attaches the chuck and heat transfer bodies together and accommodate differential thermal expansion thereof while maintaining a seal during thermal cycles.
Abstract:
An electrostatic chuck suitable for use at high temperatures having a replaceable expansion assembly, functioning as an outer tubulation and heat choke, between a chuck body and a heat transfer body. The expansion assembly accommodates differential thermal stresses between the chuck body and the heat transfer body, and/or limits direct heat conduction from the chuck body to the heat transfer body. The ability to operate the chuck at temperatures in excess of 200° C. allows it to be used for plasma etching of materials, such as platinum, which require high temperatures to volatilize low volatility etch products as well as routine plasma etching, chemical vapor deposition, sputtering, ion implantation, ashing, etc. The novel design of the removably attached expansion assembly allows the chuck to be scaled for larger workpieces, to remain serviceable through more heating cycles, and to be economically serviced.
Abstract:
An apparatus to supply a plurality of process fluids for processing a substrate in a semiconductor processing chamber is disclosed. The apparatus includes a plurality of process fluid supply valves and a fluid supply network that is defined between a crossover valve and a tuning supply valve. The apparatus further includes a tuning fluid supply being connected to the fluid supply network through the tuning supply valve. Further included with the apparatus is a plurality of process fluids that are connected to the fluid supply network through the plurality of process fluid supply valves. A process chamber that has a substrate support is also included in the apparatus. The process chamber further including an edge fluid supply and a center fluid supply, the edge fluid supply connected to the fluid supply network through an edge enable valve and the center supply connected to the fluid supply network through a center enable valve. Wherein the crossover valve, edge enable valve, and center enable valve allow one of tuning fluid or process fluids to flow to one of the edge fluid supply or the center fluid supply.
Abstract:
An electrostatic chuck for use in a plasma chamber where etching or deposition processes are carried out on semiconductor wafers is composed of a chuck body (56) with an electrode (60) to clamp a wafer (30) electrostatically and a heat transfer body (58). A plenum (80) is established between surfaces of the chuck body (56) and the heat transfer body (58). An expansion joint (64) attaches the chuck and heat transfer bodies together and accommodate differential thermal expansion thereof while maintaining a seal during thermal cycles.
Abstract:
An electrostatic chuck suitable for use at high temperatures having a replaceable expansion assembly, functioning as an outer tubulation and heat choke, between a chuck body and a heat transfer body. The expansion assembly accommodates differential thermal stresses between the chuck body and the heat transfer body, and/or limits direct heat conduction from the chuck body to the heat transfer body. The ability to operate the chuck at temperatures in excess of 200° C. allows it to be used for plasma etching of materials, such as platinum, which require high temperatures to volatilize low volatility etch products as well as routine plasma etching, chemical vapor deposition, sputtering, ion implantation, ashing, etc. The novel design of the removably attached expansion assembly allows the chuck to be scaled for larger workpieces, to remain serviceable through more heating cycles, and to be economically serviced.