Abstract:
A plasma processing apparatus includes a process chamber housing defining a process chamber, a platen positioned in the process chamber for supporting a workpiece, a source configured to generate plasma in the process chamber, and a biasing system. The biasing system is configured to bias the platen with a negatively biased DC signal to attract ions from the plasma towards the workpiece during a first processing time interval and configured to bias the platen with a positively biased DC signal to repel ions from the platen towards interior surfaces of the process chamber housing during a cleaning time interval. The cleaning time interval is separate from the first processing time interval and occurs after the first processing time interval.
Abstract:
An apparatus for an etching process includes a chamber, a plasma generator disposed in the chamber, a stacked structure disposed in the chamber to support a substrate thereon and including an electrode plate and an insulation coating layer on the electrode plate, electrode rods inserted into through holes of the stacked structure to penetrate through the stacked structure, directly contacting the substrate and spaced apart from sidewalls of the through holes of the stacked structure, at least one DC pulse generator generating a DC pulse to the electrode plate and the electrode rods, first connection lines connecting the DC pulse generator to the electrode rods, and at least one second connection line connecting the DC pulse generator to a lower portion of the electrode plate.
Abstract:
Apparatus and method for delivering power to a substrate processing chamber may include a target and a substrate support pedestal disposed in the chamber, a pedestal impedance match device coupled between the substrate support pedestal and ground, wherein the pedestal impedance match device is configured to adjust a bias voltage on the substrate support pedestal, a target impedance match device coupled between the target and ground, wherein the target impedance match device is configured to adjust a bias voltage on the target, a switch electrically coupled to the pedestal impedance match device and the target impedance match device, a first RF power source coupled to the switch, wherein the switch is configured to direct high frequency voltage from the first RF power source to either the target or the substrate support pedestal, and a second RF power source coupled to the substrate support pedestal.
Abstract:
Provided is a vacuum coating apparatus that deposits a coating on a substrate, the vacuum coating apparatus including: a vacuum chamber; a vacuum exhaust unit that performs a vacuum exhaust operation inside the vacuum chamber; a plurality of rotation holding units that hold the substrate as a coating subject in a rotating state; and a revolution mechanism that revolves the plurality of rotation holding units about a revolution axis parallel to the rotation axes of the respective rotation holding units; in which the plurality of rotation holding units are divided into a plurality of groups so that power is supplied to the respective rotation holding units in a manner that the rotation holding units of the respective groups have different potentials. For example, the respective groups alternately repeat a state where the rotation holding units become cathodes and serve as working electrodes that play primary role to generate glow discharge plasma and a state where the rotation holding units serve as counter electrodes.
Abstract:
The present invention provides an ion implantation machine comprising: an enclosure ENV that is connected to a pump device VAC; a negatively polarized HT substrate-carrier PPS that is arranged inside said enclosure ENV; and a plasma feed device AP in the form of a generally cylindrical body extending between an initial section and a terminal section, the device having a main chamber PR provided with an ionization cell BC1, ANT1; said main chamber PR being provided with a gas delivery orifice ING; and the final section CL of said main chamber being provided with head-loss means for creating a pressure drop relative to said body AP. Furthermore, said plasma feed device AP also includes an auxiliary chamber AUX arranged beyond said final section, said auxiliary chamber opening out into said enclosure ENV at said terminal section.
Abstract:
A method of processing a substrate having horizontal and non-horizontal surfaces is disclosed. The substrate is implanted with particles using an ion implanter. During the ion implant, due to the nature of the implant process, a film may be deposited on the surfaces, wherein the thickness of this film is thicker on the horizontal surfaces. The presences of this film may adversely alter the properties of the substrate. To rectify this, a second process step is performed to remove the film deposited on the horizontal surfaces. In some embodiments, an etching process is used to remove this film. In some embodiments, a material modifying step is used to change the composition of the material comprising the film. This material modifying step may be instead of, or in addition to the etching process.
Abstract:
There is provided dry etching apparatus including a stage on which a wafer is placed, an antenna electrode, a high frequency power supply, a shower plate, and an RF bias power supply. Further, a bias path controller is provided on the side of the antenna electrode. The bias path controller resonates in series with the static reactance formed by the shower plate with respect to the frequency of the RF bias. Then, the bias path controller changes and grounds the impedance by the variable inductive reactance. With this mechanism, highly uniform etching can be achieved even if a shower plate of quartz is used for corrosive gases.
Abstract:
Methods and apparatus for depositing a metal-containing layer on a substrate are provided herein. In some embodiments, a method of processing a substrate in a physical vapor deposition (PVD) chamber includes applying RF power at a VHF frequency to a target comprising a metal disposed in the PVD chamber above the substrate to form a plasma from a plasma-forming gas; optionally applying a DC power to the target to direct the plasma towards the target; sputtering metal atoms from the target using the plasma while maintaining a first pressure in the PVD chamber sufficient to ionize a predominant portion of the sputtered metal atoms; and controlling the plasma sheath voltage between the plasma and the substrate to form a metal-containing layer having a desired crystal structure and or desired morphology on feature structures.
Abstract:
A plasma etch processing chamber configured to clean a bevel edge of a substrate is provided. The chamber includes a bottom edge electrode and a top edge electrode defined over the bottom edge electrode. The top edge electrode and the bottom edge electrode are configured to generate a cleaning plasma to clean the bevel edge of the substrate. The chamber includes a gas feed defined through a top surface of the processing chamber. The gas feed introduces a processing gas for striking the cleaning plasma at a location in the processing chamber that is between an axis of the substrate and the top edge electrode. A pump out port is defined through the top surface of the chamber and the pump out port located along a center axis of the substrate. A method for cleaning a bevel edge of a substrate is also provided.
Abstract:
In some embodiments, the present disclosure relates to a plasma etching system having direct and localized plasma sources in communication with a processing chamber. The direct plasma is operated to provide a direct plasma to the processing chamber for etching a semiconductor workpiece. The direct plasma has a high potential, formed by applying a large bias voltage to the workpiece. After etching is completed the bias voltage and direct plasma source are turned off. The localized plasma source is then operated to provide a low potential, localized plasma to a position within the processing chamber that is spatially separated from the workpiece. The spatial separation results in formation of a diffused plasma having a zero/low potential that is in contact with the workpiece. The zero/low potential of the diffused plasma allows for reactive ashing to be performed, while mitigating workpiece damage resulting from ion bombardment caused by positive plasma potentials.