H01J37/32825

Magnetically Enhanced High Density Plasma-Chemical Vapor Deposition Plasma Source For Depositing Diamond and Diamond-Like Films
20220195585 · 2022-06-23 · ·

A magnetically enhanced plasma apparatus includes a hollow cathode target assembly; an anode positioned on top of the hollow cathode target assembly, thereby forming a gap between the anode and the hollow cathode target assembly; a cathode magnet assembly; a row of magnets that generate a magnetic field in the gap and a magnetic field on a surface of the hollow cathode target assembly with the cathode magnet assembly such that magnetic field lines are substantially perpendicular to a surface of the hollow cathode target assembly; an electrode positioned adjacent to the row of magnets behind the gap; a first radio frequency (RF) power supply coupled to the electrode, wherein the electrode is coupled to ground through an inductor; and a second radio frequency (RF) power supply coupled to the hollow cathode target assembly. The second RF power supply ignites and sustains plasma in the hollow cathode target assembly. A frequency and power of the second RF power supply are selected to increase at least one of a degree of dissociation of feed gas molecules and degree of ionization of feed gas atoms. A frequency and power of the first RF power supply are selected to increase a degree of dissociation of feed gas molecules to form a layer from sputtering hollow cathode target material onto a substrate.

Magnetically enhanced high density plasma-chemical vapor deposition plasma source for depositing diamond and diamond-like films
11286555 · 2022-03-29 · ·

A magnetically enhanced HDP-CVD plasma source includes a hollow cathode target and an anode. The anode and cathode form a gap. A cathode target magnet assembly forms magnetic field lines that are substantially perpendicular to a cathode target surface. The gap magnet assembly forms a cusp magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross a pole piece electrode positioned in the gap. This pole piece is isolated from ground and can be connected with a voltage power supply. The pole piece can have a negative, positive, or floating electric potential. The plasma source can be configured to generate volume discharge. The gap size prohibits generation of plasma discharge in the gap. By controlling the duration, value and a sign of the electric potential on the pole piece, the plasma ionization can be controlled. The magnetically enhanced HDP-CVD source can also be used for chemically enhanced ionized physical vapor deposition (CE-IPVD). Gas flows through the gap between hollow cathode and anode. The cathode target is inductively grounded, and the substrate is periodically inductively grounded.

VACUUM PROCESSING APPARATUS AND METHOD OF CLEANING VACUUM PROCESSING APPARATUS

A vacuum processing apparatus of the present invention is a vacuum processing apparatus which performs plasma processing. The vacuum processing apparatus includes an electrode flange, a shower plate, an insulating shield, a processing chamber in which a processing-target substrate is to be disposed, an electrode frame, and a slide plate. The electrode frame and the slide plate are slidable in response to thermal deformation that occurs when a temperature of the shower plate is raised or lowered. The shower plate is supported by the electrode frame using a support member penetrating through an elongated hole. The elongated hole is formed so that the support member is relatively movable in the elongated hole in response to thermal deformation that occurs when a temperature of the shower plate is raised or lowered.

Electrode component for generating large area atmospheric pressure plasma

An electrode component for generating large area atmosphere pressure plasma is provided. The electrode component comprises a first transparent insulation substrate, a first transparent electrode pattern, a second transparent electrode pattern, and a second transparent insulation substrate. The first transparent insulation substrate has a first thickness. The first transparent electrode pattern and the second transparent electrode pattern are formed on the upper surface of the first transparent insulation substrate and has a gap therebetween. The second transparent insulation substrate has a second thickness and covers the first transparent electrode pattern and the second transparent electrode pattern. The first thickness is greater than the second thickness in order to form atmospheric pressure plasma above the second transparent insulation substrate.

METHODS OF TREATING A SURFACE OF A POLYMER MATERIAL BY ATMOSPHERIC PRESSURE PLASMA
20220068618 · 2022-03-03 ·

A method for treating a flexible plastic substrate is provided herein. The method includes establishing an atmospheric pressure plasma beam from an inert gas using a power of greater than about 90W, directing the plasma beam toward a surface of the flexible polymer substrate, and scanning the plasma beam across the surface of the polymer substrate to form a treated substrate surface.

Magnetically Enhanced High Density Plasma-Chemical Vapor Deposition Plasma Source For Depositing Diamond and Diamond-Like Films
20220042168 · 2022-02-10 · ·

A method of sputtering a layer on a substrate includes positioning an HEDP magnetron in a vacuum with an anode, cathode target, magnet assembly, substrate, and feed gas; applying a plurality of unipolar negative direct current (DC) voltage pulses from a pulse power supply to a pulse converting network (PCN), wherein the PCN comprises at least one inductor and at least one capacitor; and adjusting an amplitude, pulse duration, and frequency associated with the plurality of unipolar negative DC voltage pulses and adjusting a value of at least one of the at least one inductor and the at least one capacitor, thereby causing a resonance mode associated with the PCN. The substrate is operatively coupled to ground by a first diode, thereby attracting positively charged ions sputtered from the cathode target and plasma to the substrate. A corresponding apparatus and computer-readable medium are also disclosed.

Frequency chirp resonant optimal plasma ignition method

A system for plasma ignition and maintenance of an atmospheric pressure plasma. The system has a variable frequency alternating current (AC) power source, a transformer, a cable connected to a secondary winding of the transformer, a programmed microprocessor for control of power to the atmospheric pressure plasma. The microprocessor is configured to a) at pre-ignition, power the AC power source at an operational frequency f.sub.op higher than the resonant frequency f.sub.r, b) decrease the operational frequency f.sub.op of the AC power source until there is plasma ignition, and c) after the plasma ignition, further decrease the operational frequency f.sub.op of the AC power source to a frequency lower than the resonant frequency f.sub.r.

PLASMA GENERATING APPARATUS AND METHOD FOR OPERATING SAME
20210319979 · 2021-10-14 ·

A plasma generating apparatus according to an embodiment of the present invention comprises: a pair of electrodes arranged in a dielectric discharge tube; an initial discharge induction coil module; and a main discharge induction coil module. The initial discharge induction coil module and the main discharge induction coil module are connected to an RF power source, and the RF power source provides RF power having different resonance frequencies to the initial discharge induction coil module and the main discharge induction coil module, respectively.

PLASMA SOURCE AND METHOD OF OPERATING THE SAME
20210296094 · 2021-09-23 ·

A plasma source (100), comprises an outer face (10) with an aperture (14) for delivering a plasma from the aperture. A transport mechanism is configured to transport a substrate (11) and the plasma source relative to each other parallel to the outer face, with a substrate surface to be processed in parallel with at least a part of the outer face that contains the aperture. First (4-1) and second tile (4-2) are arranged within a first plane of a working electrode (22) with neighbouring edges (12) bordering a first plasma collection space (6-1) and a third tile (4-3) is arranged in a second plane of the working electrode parallel to the first plane such that the third tile overlaps neighbouring edges in the first plane. At least one of the working and counter electrodes comprises a local modification (13,15) near said neighbouring edges to increase a plasma delivery to the aperture compensating for loss of plasma collection due to the neighbouring edges.

METHOD FOR HANDLING AN IMPLANT
20210257192 · 2021-08-19 ·

An apparatus for plasma treatment of an implant prior to installing the implant in a live subject is provided. The apparatus comprises an activation device and a portable container detachable from the activation device. The portable container comprises a closed compartment containing the implant immersed in a fluid, and the activation device comprises a slot configured to receive the portable container. The activation device further comprises an electrical circuit configured to be electrically associated with at least one electrode and configured to provide to the at least one electrode electric power suitable for applying a plasma generating electric field in the closed compartment, when the portable container is disposed in the slot. A container suitable for providing plasma treatment to a silicone implant and a method for preparing an implant for implantation surgery are also provided.