摘要:
A polishing apparatus is used for polishing a workpiece such as a semiconductor wafer to a flat mirror finish. The polishing apparatus includes a turntable having a polishing surface thereon, and a top ring for holding a workpiece to be polished and pressing the workpiece against the polishing surface on the turntable. A pusher is disposed in a position for transferring the workpiece to and from the top ring, and has a workpiece support which can be lifted to a position close to the top ring for transferring the workpiece to and from the top ring. When the workpiece support receives a polished workpiece and is lowered, a cleaning liquid is ejected substantially simultaneously from three cleaning nozzle units that are disposed in respective three positions to clean the upper and lower surfaces of the workpiece and the lower surface of the top ring.
摘要:
A polishing apparatus includes an arrangement of a plurality of units to deal with various operations and a robot having at least one arm. The plurality of units are disposed around the robot and include a loading unit for receiving thereon a, e.g. dry, workpiece to be polished, a polishing system including at least one polishing unit for polishing the workpiece, a washing system and a drying system at least including one washing unit for washing and drying the polished workpiece, and an unloading unit for receiving thereon a resultant clean and dry polished workpiece.
摘要:
A polishing cloth mounted on a turntable is dressed by bringing a dresser in contact with the polishing cloth for restoring the polishing capability of the polishing cloth. The dressing is performed by measuring heights of a surface of the polishing cloth at radial positions of the polishing cloth in a radial direction thereof determining a rotational speed of the dresser with respect to a rotational speed of the turntable on the basis of the measured heights, and dressing the polishing cloth by pressing the dresser are rotating. The dresser has an annular diamond grain layer or an annular SiC layer.
摘要:
A polishing apparatus is used for polishing a workpiece such as a semiconductor wafer to a flat mirror finish by a combination of chemical polishing and mechanical polishing. The polishing apparatus includes a turntable with a polishing cloth mounted on an upper surface thereof, a top ring for supporting the workpiece to be polished and pressing the workpiece against the polishing cloth, and a dressing tool for dressing the polishing cloth on the turntable. The polishing apparatus further includes a cover which covers an upper surface of the turntable for preventing liquid on the turntable from being scattered, and inserting holes formed in an upper wall of the cover for inserting the top ring and the dressing tool therethrough.
摘要:
A polishing apparatus is used for polishing a workpiece such as a semiconductor wafer to a flat mirror finish. The polishing apparatus includes a polishing section for polishing a surface of a workpiece, a cleaning section for cleaning the workpiece which has been polished, a first liquid leakage sensor provided in the polishing section for detecting a liquid leakage which occurs in the polishing section, and a second liquid leakage sensor provided in the cleaning section for detecting a liquid leakage which occurs in the cleaning section. The polishing apparatus further includes a controlling device for stopping the supply of liquid to the polishing section or the cleaning section in which the liquid leakage occurs when either one of the first and second liquid leakage sensors detects the liquid leakage.
摘要:
A polishing apparatus includes a light weight and easily interchangeable cloth cartridge of high deformation resistance. The cloth cartridge is made by bonding a polishing cloth to a cartridge base member which includes a honeycomb structure member which can be sandwiched between top and bottom aluminum thin plates. Honeycomb structure member of various cell sizes and materials available in the marketplace can be used for this purpose quite effectively. The honeycomb structure members made of an aluminum material provides a stiff and thermally resistant cartridge base member. Cell spaces in the honeycomb structure member can be cooled or heated, depending on a nature of the polishing slurry used, by passing an appropriate fluid through the base member. This is made possible by providing flow holes in the cell walls separating the honeycomb cells. This approach is effective in producing optimum polishing performance by the cloth cartridge. Thermal control can be exercised generally or locally, depending on where heat is needed or should be removed.
摘要:
A polishing apparatus for polishing a workpiece such as a semiconductor wafer has a reduced height compared with conventional polishing apparatuses. The height reduction is achieved by disposing a drive motor for rotating a top ring below a turntable, and by making a swing shaft for loading/unloading of the workpiece hollow to accommodate a rotating shaft for transmitting rotation from the motor to the top ring.
摘要:
A polishing apparatus for polishing a surface of a workpiece includes a housing unit, a partition wall partitioning an interior of the housing unit into a first chamber and a second chamber, a polishing section disposed in the first chamber and having a turntable with an abrasive cloth mounted on an upper surface thereof and a top ring positioned above the turntable for supporting the workpiece to be polished and pressing the workpiece against the abrasive cloth, and a cleaning section disposed in the second chamber and cleaning the workpiece which has been polished. The polishing apparatus further includes a transferring device for transferring the workpiece which has been polished from the polishing section to the cleaning section through an opening and an exhaust system for exhausting ambient air from each of the polishing section and cleaning section separately and independently.
摘要:
A polishing apparatus 70 is used for polishing a workpiece such as a semiconductor wafer to a flat mirror finish by a combination of chemical polishing and mechanical polishing. The polishing apparatus includes a turntable 73 with a polishing 74 cloth mounted on an upper surface thereof, a top ring 75 for supporting the workpiece to be polished and pressing the workpiece against the polishing cloth, and a dressing tool 79 for dressing the polishing cloth on the turntable. The polishing apparatus further includes a cover 10 which covers an upper surface of the turntable for preventing liquid on the turntable from being scattered, and inserting holes 17 and 21 formed in an upper wall of the cover for inserting the top ring and the dressing tool therethrough.
摘要:
A polishing apparatus is used for polishing a workpiece such as a semiconductor wafer to a flat mirror finish. The polishing apparatus has an exhaust device for exhausting air in the polishing apparatus. The polishing apparatus includes a housing, a polishing section housed in the housing for polishing a workpiece, a cleaning section housed in the housing for cleaning the workpiece which has been polished, and a base comprising a plurality of structural members for supporting at least one device in at least one of the cleaning section and the polishing section. At least one of the structural members has a fluid passage therein and intake openings to serve as an exhaust duct. The polishing apparatus further comprises a main exhaust duct communicating with the exhaust duct and extending to an exterior of the housing for exhausting air introduced in the exhaust duct.