Abstract:
Embodiments of the present disclosure generally relates a shadow frame including two opposing major side frame members adjacent to two opposing minor side frame members coupled together with a corner bracket, wherein the corner bracket includes a corner inlay having legs that extend in directions generally orthogonal to each other.
Abstract:
Embodiments of the present disclosure generally describe a method for depositing a barrier layer of SiN using a high density plasma chemical vapor deposition (HDP-CVD) process, and in particular, controlling a film stress of the deposited SiN layer by biasing the substrate during the deposition process.
Abstract:
The present disclosure is directed to a showerhead for distributing plasma. The showerhead includes a perforated tile coupled to a support structure. A dielectric window is disposed over the perforated tile. An electrode is coupled to the dielectric window. An inductive coupler is disposed over the dielectric window. At least a portion of the inductive coupler is angled relative to at least a portion of the electrode.
Abstract:
Embodiments of a method of depositing a thin film on a substrate is provided that includes placing a substrate on a substrate support that is mounted in a processing region of a processing chamber, flowing a process fluid through a plurality of gas passages in a diffuser plate toward the substrate supported on the substrate support, wherein the diffuser plate has an upstream side and a downstream side and the downstream side has a substantially concave curvature, and each of the gas passages are formed between the upstream side and the downstream side, and creating a plasma between the downstream side of the diffuser plate and the substrate support.
Abstract:
Embodiments of a gas diffuser plate for distributing gas in a processing chamber are provided. The gas distribution plate includes a diffuser plate having an upstream side and a downstream side, and a plurality of gas passages passing between the upstream and downstream sides of the diffuser plate. The gas passages include hollow cathode cavities at the downstream side to enhance plasma ionization. The depths, the diameters, the surface area and density of hollow cathode cavities of the gas passages that extend to the downstream end can be gradually increased from the center to the edge of the diffuser plate to improve the film thickness and property uniformity across the substrate. The increasing diameters, depths and surface areas from the center to the edge of the diffuser plate can be created by bending the diffuser plate toward downstream side, followed by machining out the convex downstream side. Bending the diffuser plate can be accomplished by a thermal process or a vacuum process. The increasing diameters, depths and surface areas from the center to the edge of the diffuser plate can also be created computer numerically controlled machining. Diffuser plates with gradually increasing diameters, depths and surface areas of the hollow cathode cavities from the center to the edge of the diffuser plate have been shown to produce improved uniformities of film thickness and film properties.
Abstract:
Embodiments of the invention generally include shield frame assembly for use with a showerhead assembly, and a showerhead assembly having a shield frame assembly that includes an insulator that tightly fits around the perimeter of a showerhead in a vacuum processing chamber. In one embodiment, a showerhead assembly includes a gas distribution plate and a multi-piece frame assembly that circumscribes a perimeter edge of the gas distribution plate. The multi-piece frame assembly allows for expansion of the gas distribution plate without creating gaps which may lead to arcing. In other embodiments, the insulator is positioned to be have the electric fields concentrated at the perimeter of the gas distribution plate located therein, thereby reducing arcing potential.
Abstract:
A transmission line RF applicator apparatus and method for coupling RF power to a plasma in a plasma chamber. The apparatus comprises two conductors, one of which has a plurality of apertures. In one aspect, apertures in different portions of the conductor have different sizes, spacing or orientations. In another aspect, adjacent apertures at successive longitudinal positions are offset along the transverse dimension. In another aspect, the apparatus comprises an inner conductor and one or two outer conductors. The main portion of each of the one or two outer conductors includes a plurality of apertures that extend between an inner surface and an outer surface of the outer conductor.
Abstract:
The embodiments of the disclosure may generally provide a method and apparatus for forming thin film transistor device that includes an indium gallium zinc oxide (IGZO) layer using a multi-component precursor gas. The embodiments of the disclosure may provide a plasma enhanced chemical vapor deposition system configured to form an IGZO layer on large area substrates. However, it should be understood that the disclosure has utility in other system configurations such other types of chemical vapor deposition systems and any other system in which distributing a multi-component precursor gas to and within a process chamber is desired.
Abstract:
A method of processing a material layer on a substrate is provided. The method includes delivering RF power from an RF power source through a match network to a showerhead of a capacitively coupled plasma chamber; igniting a plasma within the capacitively coupled plasma chamber; measuring one or more phase angles of one or more harmonic signals of the RF power relative to a phase of a fundamental frequency of the RF power; and adjusting at least one phase angle of at least one harmonic signal of the RF power relative to the phase of the fundamental frequency of the RF power based on the one or more phase angle measurements.
Abstract:
Embodiments disclosed herein generally relate to a slit valve door assembly for sealing an opening in a chamber. A slit valve door that is pressed against the chamber to seal the slit valve opening moves with the chamber as the slit valve opening shrinks so that an o-ring pressed between the slit valve door and the chamber may move with the slit valve door and the chamber. Thus, less rubbing of the o-ring against the chamber may occur. With less rubbing, fewer particles may be generated and the o-ring lifetime may be extended. With a longer lifetime for the o-ring, substrate throughput may be increased.