摘要:
A chemical mechanical planarization (CMP) conditioning apparatus is provided. The CMP conditioning apparatus is designed to connect to a positioning arm which is capable of applying the conditioning apparatus to a processing surface. Embodiments of the CMP conditioning apparatus include a housing configured to connect to the positioning arm, and one side of the housing having a concave gimbal surface. A puck holder that a convex gimbal surface configured to mate with the concave gimbal surface of the housing is further provided. Thee puck holder receives a conditioning puck that has an attach surface and an active surface. The concave gimbal surface and the convex gimbal surface define a projected gimbal point at about a plane defined at about the active surface of the conditioning puck.
摘要:
An air platen assembly is described and includes a platen that has a plurality of concentric rings. Each of the rings has a plurality of openings in order to provide a cushion of air to a CMP belt. At least one of the rings extends beyond an outer edge of a wafer to be planarized by the CMP belt. A support is attached with the platen and has a plurality of air ports for pressurized air to pass to the rings of the platen. A gasket is positioned between the support and the platen and has a plurality of cutouts that align with the openings and the air ports. A base is also included and supports the support.
摘要:
An air platen assembly is described and includes a platen that has a plurality of concentric rings. Each of the rings has a plurality of openings in order to provide a cushion of air to a CMP belt. At least one of the rings extends beyond an outer edge of a wafer to be planarized by the CMP belt. A support is attached with the platen and has a plurality of air ports for pressurized air to pass to the rings of the platen. A gasket is positioned between the support and the platen and has a plurality of cutouts that align with the openings and the air ports. A base is also included and supports the support.
摘要:
A polishing head assembly for use in a chemical mechanical planarization apparatus is provided. The polishing head assembly includes a carrier head shaped substantially like a disk having a circumference, a top surface, a bottom surface, and an outer wall, the outer wall having a groove therein, the groove extending into the carrier head from the bottom surface of the carrier head, and the groove running the entire circumference of the carrier head; and a retainer ring having an interior wall and an exterior wall, the interior wall of the retainer ring being in contact with the outer wall of the carrier head, the interior wall having a slot therein, the slot defining a lower portion of the interior wall as a flexible leg, the flexible leg having a receiving end that is adapted to secure an object having a surface to be polished, the slot having a first terminal end adjacent to the groove in the carrier head and a second terminal end, opposite the first terminal end, in the body of the retainer ring. A carrier head is provided, as is a retainer ring. A method of compensating for uneven force distribution in a chemical mechanical planarization apparatus is also provided.
摘要:
An apparatus for applying a wafer to a polishing belt during a CMP operation includes a spindle having an upper end and a lower end. A wafer carrier is coupled to the lower end of the spindle. A linear force generator is disposed at the upper end of the spindle. A load cell is positioned between the linear force generator and the upper end of the spindle. A controller is coupled to the load cell for controlling the force applied by the linear force generator. A method for applying downward force on a wafer during CMP also is described.
摘要:
A method and system to clean and rinse and dry wafer comprises a precision control of an outward-moving inner boundary condition and a steady state edge boundary condition. The edge boundary condition can confine the liquid within the substrate by an edge liquid flow step, to create an outer liquid boundary, to confine the liquid within the wafer, and to compensate for liquid lost through process conditions such as wafer spinning. The outward-moving inner boundary condition can control or distribute the liquid within the substrate by an inner liquid boundary condition that moves outward to the edge of the wafer, to create an outward-moving inner liquid boundary, to uniformly distribute liquid within the wafer, and to uniformly drying the wafer.
摘要:
A method of mixing two or more chemicals such as for a CMP system. The method includes delivering a first chemical to a first inlet port of a point of use mixer at a first flow rate, delivering a second chemical to a second inlet port of the point of use mixer at a second flow rate, controlling the flow of the first and second chemicals into the mixer upon demand for a mixture of the first and second chemicals and balancing the flow of the first and second chemicals into the mixer. The mixture can also be output such as to a CMP process. A system for mixing two or more chemicals is also described.
摘要:
A method of joining sections of polishing pad for use in the chemical mechanical planarization of a semiconductor wafer. Two sections of polishing pad are positioned so that they contact one another. The two sections are then welded together to create a robust joint. The joint is resistant to infiltration of slurry and is not susceptible to delamination that commonly occurs in a typical laminate joint.
摘要:
A polishing apparatus includes a rotatable head assembly including a substrate retainer that incorporates a cavity in the face surface of the substrate retainer for temporarily holding polishing slurry during operation of the polishing apparatus. The cavity resides in the face surface of the substrate retainer at a location adjacent the perimeter surface of the retainer. During operation of the polishing apparatus, slurry flowing along the surface of the polishing pad flows into the cavity where a portion of the slurry is temporarily held. As the head assembly of the polishing apparatus rotates against the polishing pad, slurry continuously flows from the cavity across the polishing pad and is uniformly distributed across the exposed surface of the substrate being polished. An offset in the cavity wall permits used slurry to flow away from the substrate retainer during rotation of the head assembly.
摘要:
The invention provides methods, systems and apparatus for the metered transport of fine powders into receptacles. According to one exemplary embodiment, an apparatus is provided which comprises a hopper having an opening. The hopper is adapted to receive a bed of fine powder. At least one chamber, which is moveable to allow the chamber to be placed in close proximity to the opening, is also provided. An element having a proximal end and a distal end is positioned within the hopper such that the distal end is near the opening. A vibrator motor is provided to vibrate the element when within the fine powder.