摘要:
A collimator system is disclosed for use in an in-line pass-by sputtering system during the fabrication of recording media to improve the data storage density and read/write performance characteristics of the media. The collimator system includes a collimator shield and a collimator honeycomb. The shield includes a rectangular tube having a flange and a frame at inner and outer ends, respectively. The various components of the shield in part serve to prevent possible contamination of substrates due to target atom accumulation on the chamber walls during the sputtering process. The collimator honeycomb is provided for blocking target atoms from contacting the substrate at low incident angles. The collimator honeycomb is comprised of a plurality of collimators which are identical to each other. In a preferred embodiment, the collimators have a hexagonal cross-section taken from a perspective perpendicular to the substrate. The collimators may also have other geometric shapes. It is also contemplated that more than one collimator honeycomb level be used in alternative embodiments.
摘要:
Selective deposition of a layer of a material, such as a thick protective overcoat, onto a selected substrate area, such as the inner or CSS landing zone, is achieved using a sputtering target assembly comprising a target/cathode having a planar sputtering surface including an erosion track area, a collimating shield positioned proximate the sputtering surface and surrounding at least a portion of the erosion track area, the collimating shield including an inwardly facing wall, and a blocking shield centrally positioned over the surface of the target/cathode and including an outwardly facing wall, wherein the inwardly facing wall of the collimating shield and the outwardly facing wall, wherein the inwardly facing wall of the collimating shield and the outwardly facing wall of the central blocking shield form an open-ended collimating channel for directing sputtered particles onto the selected substrate area.
摘要:
A sputtering target assembly for depositing onto a selected substrate area comprises a target/cathode having a planar sputtering surface including an erosion track area, a collimating shield positioned proximate to the sputtering surface, surrounding at least a portion of the erosion track area, and including an inwardly facing wall, and a blocking shield centrally positioned over the surface of the target/cathode and including an outwardly facing wall, wherein the inwardly facing wall of the collimating shield and the outwardly facing wall of the central blocking shield form an open-ended channel for directing sputtered particles onto the selected substrate area. A method for utilizing the target assembly for selectively depositing a thicker protective overcoat layer on the inner CSS or landing zone relative to the outer data zone of disk-shaped recording media is provided.
摘要:
A method comprising introducing a workpiece support into a chamber of an apparatus. The workpiece support is for supporting thereon a plurality of workpieces. The apparatus comprising: the chamber having an interior space configured to be maintained at a pressure below atmospheric pressure; a vapor source for supplying the interior space of the chamber with a linearly extending stream of lubricant vapor; the workpiece support for supporting thereon a plurality of workpieces with surfaces facing the vapor source; and a conveyor for continuously moving the workpiece support transversely past the linearly extending stream of lubricant vapor from the vapor source. The method also comprising continuously moving the workpiece support with the plurality of workpieces supported thereon transversely past the linearly extending stream of lubricant vapor from the vapor source and depositing a uniform thickness film of the lubricant on at least one surface of each of the plurality of workpieces.
摘要:
Vapor deposition of a uniform thickness thin film of lubricant on at least one surface of a substrate, comprises the steps of: (a) providing an apparatus comprising: (i) a chamber having an interior space maintained below atmospheric pressure; (ii) a substrate loader/unloader for supplying the interior space with at least one substrate and for withdrawing at least one substrate from the interior space; (iii) at least one lubricant vapor source for supplying the interior space with a stream of lubricant vapor; and (iv) a substrate transporter/conveyor for continuously moving at least one substrate past the stream of vapor from the at least one lubricant vapor source; (b) supplying the interior space with a substrate having at least one surface; (c) continuously moving the substrate past the stream of lubricant vapor and depositing a uniform thickness thin film of the lubricant on the at least one surface; and (d) withdrawing the lubricant-coated substrate from the interior space. The invention has particular utility in depositing thin films of polymeric lubricants onto disc-shaped substrates in the manufacture of magnetic and MO recording media.
摘要:
A method for fabricating cylindrical sputter targets for rotary cylindrical cathodes used in depositing a dielectric layer of desired alloy on non-planar substrates during sputtering is disclosed. The method includes forming a cooling tube having a passage within to receive a cooling medium, then fabricating multiple annular rings including each of the basic metal constituents of the desired alloy and attaching the annular rings to the cooling tube such that the exposed outer portions of the annular rings provide a homogeneous layer of the desired alloy on the non-planar substrates during sputtering.
摘要:
A cylindrical magnetron sputtering apparatus includes a rotating cylindrical sputtering target, a non-rotating magnet structure within the cylindrical sputtering target and at least one non-rotating trim magnet adjacent an end of the magnet structure. The trim magnets are manipulated during operation of the apparatus to alter a magnetic field produced by the magnet structure within the cylindrical sputtering cathode. As a result the shape of a racetrack discharge plasma formed at an end of the sputtering target is altered such that the formation of an erosion groove is avoided.
摘要:
A cylindrical magnetron sputtering apparatus includes a rotating cylindrical sputtering target, a non-rotating magnet structure within the cylindrical sputtering target and at least one non-rotating trim magnet adjacent an end of the magnet structure. The trim magnets are manipulated during operation of the apparatus to alter a magnetic field produced by the magnet structure within the cylindrical sputtering cathode. As a result the shape of a racetrack discharge plasma formed at an end of the sputtering target is altered such that the formation of an erosion groove is avoided.
摘要:
A system and method for sputtering using a plurality of different bias voltages, a plurality of target-cathodes that can be powered at different voltages disposed along said path of travel, and a controller configured to selectively vary the target-cathode voltage and the pallet bias voltage while the pallet moves along the path of travel. The target-cathodes are spaced apart along the path of travel by a distance less than a length of the pallet and on both sides of the path of travel. The controller can include a timing circuit for synchronizing changes in the target-cathode voltages with changes in the pallet bias voltage.
摘要:
An apparatus for performing simultaneous pass-by vapor deposition of a uniform thickness thin film of a lubricant on at least one surface of each of a plurality of substrates, comprising: (a) chamber means having an interior space adapted to be maintained at a reduced pressure below atmospheric pressure, including entrance and exit means at opposite ends thereof; (b) at least one linearly extending vapor source means for supplying the interior space of the chamber with at least one linearly extending stream of lubricant vapor; (c) a substrate/workpiece mounting/supporting means adapted for supporting thereon a plurality of substrates/workpieces; and (d) a transporter/conveyor means for continuously moving the substrate/workpiece mounting/supporting means transversely past the at least one linearly extending stream of lubricant vapor for depositing a uniform thickness thin film of lubricant on the surfaces of each of a plurality of substrates/workpieces carried by the substrate/workpiece mounting/supporting means. Embodiments of the method of the invention include depositing lubricant thin films on freshly deposited carbon-containing protective overcoats formed on disc-shaped magnetic and/or magneto-optical recording media.