摘要:
A passivation species precursor gas is furnished to an inner zone at a first flow rate, while flowing an etchant species precursor gas an annular intermediate zone at a second flow rate. Radial distribution of etch rate is controlled by the ratio of the first and second flow rates. The radial distribution of etch critical dimension bias on the wafer is controlled by flow rate of passivation gas to the wafer edge.
摘要:
A gas distribution assembly for the ceiling of a plasma reactor includes a center fed hub and an equal path length distribution gas manifold underlying the center fed hub.
摘要:
A gas distribution assembly for the ceiling of a plasma reactor includes a center fed hub and an equal path length distribution gas manifold underlying the center fed hub.
摘要:
Embodiments of the present invention provide apparatus and method for processing a substrate with increased uniformity. One embodiment of the present invention provides an apparatus for processing a substrate. The apparatus comprises a chamber body defining a processing volume, a substrate support disposed in the processing volume, a showerhead disposed in the processing volume opposite to the substrate support, and a plasma generation assembly configured to ignite a plasma from the processing gases in the processing gas in the processing volume. The showerhead is configured to provide one or more processing gases to the processing volume. The showerhead has two or more distribution zones each independently controllable.
摘要:
A method of processing a wafer in a plasma, in which target values of two different plasma process parameters are simultaneously realized under predetermined process conditions by setting respective power levels of VHF and HF power simultaneously coupled to the wafer to respective optimum levels.
摘要:
In a plasma etch process, critical dimension (CD), CD bias and CD bias microloading are controlled independently of plasma process conditions or parameters, such as RF power levels, pressure and gas flow rate, by depressing or elevating the workpiece support pedestal to vary the gap between the workpiece and the chamber ceiling facing the workpiece, using an axially adjustable workpiece support.
摘要:
Embodiments of the present invention provide apparatus and method for processing a substrate with increased uniformity. One embodiment of the present invention provides an apparatus for processing a substrate. The apparatus comprises a chamber body defining a processing volume, a substrate support disposed in the processing volume, a showerhead disposed in the processing volume opposite to the substrate support, and a plasma generation assembly configured to ignite a plasma from the processing gases in the processing gas in the processing volume. The showerhead is configured to provide one or more processing gases to the processing volume. The showerhead has two or more distribution zones each independently controllable.
摘要:
A method of processing a wafer in a plasma, in which target values of two different plasma process parameters are simultaneously realized under predetermined process conditions by setting respective power levels of VHF and HF power simultaneously coupled to the wafer to respective optimum levels.
摘要:
Line edge smoothness in a hardmask etch process is improved by widening the chamber pressure process window by applying VHF power and increasing the chamber pressure to near the maximum value of the widened process window.
摘要:
A method of processing a workpiece in a plasma reactor chamber is disclosed. The method includes providing an in-situ gas distribution plate between the workpiece and a ceiling of the chamber that divides the chamber into upper and lower chamber regions. The method further includes providing in the in-situ plate an array of feed-through openings with different opening sizes to present a non-uniform distribution of gas flow resistance for gas flow from the upper chamber region to the lower chamber region. A first process gas is introduced into the upper chamber region and a plasma is generated a plasma in the upper chamber region. A second process gas is introduced in the lower chamber region through gas injection orifices of the in-situ gas distribution plate.