摘要:
A polishing method and a polishing apparatus that are for making contact pressure between a work and a polishing pad substantially uniform within surfaces to obtain a work having good quality. A turn table (2) is supported by a grooved surface of a turn table receiving member (3b), the grooved surface being provided with grooves (9b) in a straight direction, a work (W) is pressed against a polishing pad (8) adhered to the turn table (2) while flowing polishing slurry, and a polishing is carried out by rotating the work (W) and the turn table (2).
摘要:
By improving the material of workpiece holder body of a workpiece holder for polishing that holds a workpiece by vacuum adsorption, and the material of resin film for coating a workpiece holding surface of the holder, and developing a method for coating the surface with a resin, which does not cause blocking of perforated holes of the holder body with the resin during the resin coating process, there are provided a workpiece holder for polishing having a workpiece holding surface of high precision, and a method for producing it. According to the present invention, there are provided a workpiece holder for polishing having a workpiece holder body provided with multiple perforated holes for holding a workpiece by vacuum adsorption, wherein a holding surface of the holder body is coated with a coating film formed by applying a thermosetting resin on the holding surface and curing it with heating, and a surface of the coating film is polished, and a method for producing it.
摘要:
A workpiece holder for polishing comprising a workpiece holder body which is provided with multiple perforated holes for holding a workpiece by vacuum suction and a holder back plate which is closely contacted with a back face of the holder body and has grooves for vacuum, wherein the holder back plate is composed of a synthetic resin and has an Asker C hardness of 70 or higher but lower than 98, and an apparatus for polishing a workpiece and a method for polishing a workpiece utilizing it. By improving the material of holder back plate of a workpiece holder for polishing that holds a workpiece by vacuum suction to enhance sealing with the holder body, thereby developing such a holder back plate that should not transfer deformation of the holder body to the workpiece surface, even if polishing agent slurry is introduced and solidified, to provide a workpiece holder for polishing having a workpiece holding surface of high precision, an apparatus for polishing a workpiece and a method for polishing a workpiece.
摘要:
There is disclosed a method of processing a work comprising polishing a work holding surface 4a of a work holding plate 4 by contacting and rubbing a work holding surface 4a of a work holding plate 4 with a polishing pad 2 attached on a polishing turn table 1 with providing polishing agent 5 thereto, holding a wafer W on said work holding surface 4a by vacuum-holding, and contacting and rubbing the wafer W with said polishing pad 2 to polish the work with providing polishing agent 5 wherein temperature of the polishing agent 5 or the polishing turn table 1 is controlled by temperature controller 7,9 so that a temperature of said work holding surface 4a when polishing said work holding plate 4 and a temperature of said work holding surface 4a when polishing the wafer w are controlled to be the same. Degradation of flatness due to thermal influence when polishing the holding plate and polishing the wafer can be prevented in a method of processing comprising polishing the work holding surface of the work holding plate to conform with the deformed shape of the polishing pad, holding a work with the work holding surface, and polishing the work.
摘要:
The present invention is a workpiece holder for polishing comprising at least a workpiece holder body having multiple perforated holes for holding a workpiece by vacuum adsorption and a back plate disposed on the back side of the body, which is provided with temperature controlling means or cooling means for the holder body. Thus, there is provided a workpiece holder for polishing, a polishing apparatus and a polishing method, which can provide a workpiece having good flatness by suppressing thermal deformation of the workpiece holder body and deformation of a resin film coated on the workpiece holding surface without degrading flatness of a workpiece held on the workpiece holder in the polishing of the workpiece, even when the number of polishing operation increases.
摘要:
A workpiece holder for polishing includes a workpiece holder body having multiple perforated holes to hold a workpiece by vacuum suction. A holding surface of the workpiece holder body may be coated with resin. A coefficient of thermal expansion of the resin coating on the holding surface may be 1×10−5/K or less. The resin coating on the holding surface may be epoxy resin filled with silica particles.
摘要:
The present invention is a polishing head in which a rubber film is formed in a boot shape in such a manner that a position where the rubber film is held by a mid plate is distantly positioned from a work holding portion; an end portion of the boot shaped rubber film is formed in O-ring shape so that the rubber film is held by the mid plate with decreasing an area of contact between the mid plate and the rubber film as much as possible. As a result, there is provided a polishing head with rubber chuck method in which an occurrence of a surface defect, such as a scratch, on a surface of the work is suppressed as much as possible and the work can be uniformly and stably polished to the outer periphery.
摘要:
The present invention provides a wafer manufacturing method and a wafer polishing apparatus which enable control of sags in a periphery of a wafer and improvement of nanotopology values thereof that is strongly required recently, and a wafer. In a polishing process for making a mirror surface of the wafer, a back surface of the wafer is polished to produce a reference plane thereof.
摘要:
Provided are a wafer polishing method in which, in single side polishing, covering a wafer holding surface (one side surface) with a protective film, a wafer polishing surface (the other side surface) is polished, so that the wafer holding surface can be prevented from being etched and contaminated by a polishing agent; a wafer cleaning method in which the protective film that remains behind on the wafer holding surface after polishing can be efficiently removed, and a waste cleaning solution is easily treated; and a wafer protective film that sufficiently covers the wafer holding surface in polishing but is effectively removed in cleaning. In a wafer polishing method in which a wafer holding surface of one side surface of a wafer is held and a wafer polishing surface of the other side surface thereof is polished while dripping a polishing agent, the wafer polishing surface is polished while covering the wafer holding surface with a synthetic resin protective film of etching resistance against the polishing agent, good adhesiveness to the wafer and a property easy to peel off from the wafer after polishing.
摘要:
A semiconductor wafer polishing agent contains mainly a silica containing polishing agent and is added with a polyolefin type fine particle material. The novel semiconductor wafer polishing agent is capable of low brightness polishing to the back face of the wafer, sensor detection of the front and back faces of the wafer, and suppression of dust to be generated by chipping of the back face of the wafer, thereby to increase the yield of semiconductor devices. A polishing method using the polishing agent and a novel semiconductor wafer having a back face with an unconventional surface shape are also disclosed.