摘要:
A method and apparatus for delivering gases to a semiconductor processing system are provided. In one embodiment, an apparatus for delivering gases to a semiconductor processing system includes a plurality of gas input and output lines having inlet and outlet ports. Connecting lines couple respective pairs of the gas input and gas output lines. Connecting valves are arranged to control flow through the respective connecting lines. Mass gas flow controllers are arranged to control flow into respective inlet ports. In another embodiment, a method includes providing a manifold having at least a plurality of inlet that may be selectively coupled to at least one of a plurality of outlets, flowing one or more gases through the manifold to a vacuum environment by-passing the processing chamber prior to processing or to a calibration circuit, and flowing the one or more gases into the processing chamber during substrate processing.
摘要:
A combination of deposition and polishing steps are used to permit improved uniformity of a film after the combination of steps. Both the deposition and polishing are performed with processes that vary across the substrate. The combination of the varying deposition and etching rates results in a film that is substantially planar after the film has been polished. In some instances, it may be easier to control the variation of one of the two processes than the other so that the more controllable process is tailored to accommodate nonuniformities introduced by the less controllable process.
摘要:
A plasma reactor for processing a workpiece such as a semiconductor wafer has a housing defining a process chamber, a workpiece support configured to support a workpiece within the chamber during processing and comprising a plasma bias power electrode. The reactor further includes plural gas sources containing different gas species, plural process gas inlets and an array of valves capable of coupling any of said plural gas sources to any of said plural process gas inlets. The reactor also includes a controller governing said array of valves and is programmed to change the flow rates of gases through said inlets over time. A ceiling plasma source power electrode of the reactor has plural gas injection zones coupled to the respective process gas inlets. In a preferred embodiment, the plural gas sources comprise supplies containing, respectively, fluorocarbon or fluorohydrocarbon species with respectively different ratios of carbon and fluorine chemistries. They further include an oxygen or nitrogen supply and a diluent gas supply. The controller is programmed to produce flow of different process gas species or mixtures thereof through different ones of said plural gas injection zones. The controller is further programmed to change over time the species content of the gases flowing through different ones of said plural gas injection zones.
摘要:
A method and apparatus for delivering gases to a semiconductor processing system are provided. In one embodiment, an apparatus for delivering gases to a semiconductor processing system includes a plurality of gas input and output lines having inlet and outlet ports. Connecting lines couple respective pairs of the gas input and gas output lines. Connecting valves are arranged to control flow through the respective connecting lines. Mass gas flow controllers are arranged to control flow into respective inlet ports. In another embodiment, a method includes providing a manifold having at least a plurality of inlet that may be selectively coupled to at least one of a plurality of outlets, flowing one or more gases through the manifold to a vacuum environment by-passing the processing chamber prior to processing or to a calibration circuit, and flowing the one or more gases into the processing chamber during substrate processing.
摘要:
A method and apparatus for delivering gases to a semiconductor processing system are provided. In one embodiment, an apparatus for delivering gases to a semiconductor processing system includes a plurality of gas input and output lines having inlet and outlet ports. Connecting lines couple respective pairs of the gas input and gas output lines. Connecting valves are arranged to control flow through the respective connecting lines. Mass gas flow controllers are arranged to control flow into respective inlet ports. In another embodiment, a method includes providing a manifold having at least a plurality of inlet that may be selectively coupled to at least one of a plurality of outlets, flowing one or more gases through the manifold to a vacuum environment by-passing the processing chamber prior to processing or to a calibration circuit, and flowing the one or more gases into the processing chamber during substrate processing.
摘要:
A plasma etch process for etching high aspect ratio openings in a dielectric film on a workpiece is carried out in a reactor having a ceiling electrode overlying the workpiece and an electrostatic chuck supporting the workpiece. The process includes injecting a first polymerizing etch process gas through a radially inward one of plural concentric gas injection zones in the ceiling electrode and injecting a second polymerizing etch process gas through a radially outward one of the plural concentric gas injection zones in the ceiling electrode, the compositions of the first and second process gases having first and second carbon-to-fluorine ratios that differ from one another. The process further includes evacuating gas from the reactor through a pumping annulus surrounding an edge of the workpiece, and etching the high aspect ratio openings in the dielectric film with etch species derived from the etch process gas while depositing a polymer derived from the etch process gas onto the workpiece, by generating a plasma in the reactor.
摘要:
A plasma reactor for processing a workpiece such as a semiconductor wafer has a housing defining a process chamber, a workpiece support configured to support a workpiece within the chamber during processing and comprising a plasma bias power electrode. The reactor further includes plural gas sources containing different gas species, plural process gas inlets and an array of valves capable of coupling any of said plural gas sources to any of said plural process gas inlets. The reactor also includes a controller governing said array of valves and is programmed to change the flow rates of gases through said inlets over time. A ceiling plasma source power electrode of the reactor has plural gas injection zones coupled to the respective process gas inlets. In a preferred embodiment, the plural gas sources comprise supplies containing, respectively, fluorocarbon or fluorohydrocarbon species with respectively different ratios of carbon and fluorine chemistries. They further include an oxygen or nitrogen supply and a diluent gas supply. The controller is programmed to produce flow of different process gas species or mixtures thereof through different ones of said plural gas injection zones. The controller is further programmed to change over time the species content of the gases flowing through different ones of said plural gas injection zones.
摘要:
Embodiments of the present invention are directed to a gas distribution system which distributes the gas more uniformly into a process chamber. In one embodiment, a gas distribution system comprises a gas ring including an outer surface and an inner surface, and a gas inlet disposed at the outer surface of the gas ring. The gas inlet is fluidicly coupled with a first channel which is disposed between the outer surface and the inner surface of the gas ring. A plurality of gas outlets are distributed over the inner surface of the gas ring, and are fluidicly coupled with a second channel which is disposed between the outer surface and the inner surface of the gas ring. A plurality of orifices are fluidicly coupled between the first channel and the second channel. The plurality of orifices are spaced from the gas inlet by a plurality of distances, and have sizes which vary with the distances from the gas inlet as measured along the first channel, such that the size of the orifice increases with an increase in the distance between the orifice and the gas inlet as measured along the first channel.
摘要:
A system and method for dividing the flow of one or more process fluids in a predetermined flow ratio is provided herein. In one embodiment, a system for dividing flow of one or more process fluids in a predetermined flow ratio includes a process chamber having a plurality of inlets for delivering one or more process fluids into the process chamber; a plurality of modulating valves coupled to the plurality of inlets, wherein each inlet of the plurality of inlets is coupled to at least one modulating valve; and a controller coupled to the plurality of modulating valves, the controller configured to control the operation of the plurality of modulating valves to divide the flow of one or more process fluids in the predetermined flow ratio.
摘要:
A method and apparatus for delivering gases to a semiconductor processing system are provided. In one embodiment, an apparatus for delivering gases to a semiconductor processing system includes a plurality of gas input and output lines having inlet and outlet ports. Connecting lines couple respective pairs of the gas input and gas output lines. Connecting valves are arranged to control flow through the respective connecting lines. Mass gas flow controllers are arranged to control flow into respective inlet ports. In another embodiment, a method includes providing a manifold having at least a plurality of inlet that may be selectively coupled to at least one of a plurality of outlets, flowing one or more gases through the manifold to a vacuum environment by-passing the processing chamber prior to processing or to a calibration circuit, and flowing the one or more gases into the processing chamber during substrate processing.