摘要:
The present invention relates to a substrate holding apparatus for holding a substrate to be polished and pressing the substrate against a polishing surface. The substrate holding apparatus comprises a top ring body for holding a substrate, an elastic pad for being brought into contact with the substrate, and a support member for supporting the elastic pad. The substrate holding apparatus further comprises a contact member mounted on a lower surface of the support member and disposed in a space formed by the elastic pad and the support member. The contact member has an elastic membrane for being brought into contact with the elastic pad. A first pressure chamber is defined in the contact member, and a second pressure chamber is defined outside of the contact member. The substrate holding apparatus further comprises a fluid source for independently supplying a fluid into, or creating a vacuum in, the first pressure chamber and the second pressure chamber.
摘要:
A polishing apparatus is used for polishing a substrate such as a semiconductor wafer to a flat mirror finish. The polishing apparatus includes a polishing table (100) having a polishing surface (101a), a top ring body (2) configured to hold and press a substrate against the polishing surface (101a), and a retainer ring (3) provided at an outer peripheral portion of the top ring body (2) and configured to press the polishing surface (101a). A fulcrum for receiving a lateral force applied from the substrate to the retainer ring (3) during polishing of the substrate is located above a central portion of the substrate.
摘要:
A polishing apparatus is used for polishing a substrate such as a semiconductor wafer to a flat mirror finish. The polishing apparatus includes a polishing table having a polishing surface, a top ring body configured to hold and press a substrate against the polishing surface, a retainer ring provided at an outer peripheral portion of the top ring body and configured to press the polishing surface, and a retainer ring guide fixed to the top ring body and configured to be brought into sliding contact with a ring member of the retainer ring to guide a movement of said ring member. Either one of sliding contact surfaces of the ring member and the retainer ring guide which are brought into sliding contact with each other comprises a low friction material.
摘要:
A polishing method can safely detach and lift up a workpiece from a polishing surface without carrying out the operation of making the workpiece overhang the polishing surface. The polishing method includes carrying out processing of a surface to be polished of a workpiece by supplying a liquid to a polishing surface while pressing the surface to be polished of the workpiece held by a holding device against the polishing surface and moving the workpiece and the polishing surface relative to each other, attracting the workpiece after the processing to the holding device while supplying the liquid to the polishing surface at a decreased flow rate, thereby detaching the workpiece from the polishing surface, and lifting up the holding device together with the workpiece on confirmation of detachment of the workpiece from the polishing surface and attachment of the workpiece to the holding device.
摘要:
A substrate holding apparatus holds a substrate such as a semiconductor and presses the substrate against a polishing surface. The substrate holding apparatus includes a top ring body (2) for holding the substrate, a plurality of fluid passages (33, 34, 35, 36) for supplying a fluid to a plurality of pressure chambers (22, 23, 24, 25) defined in the top ring body, and a plurality of sensors (S1, S2, S3, S4) disposed in the fluid passages, respectively, for detecting flowing states of the fluid which flows through the fluid passages.
摘要:
A polishing apparatus 110 which comprises a polishing tool 1 having a polishing surface, and a holder means (top ring 4) for holding a semiconductor wafer (a substrate) W. Polishing apparatus 110 further comprises color CCD camera 10 for taking a color image of a region on the polishing surface; image processor means 40 for determining whether or not any foreign matter exists on the polishing surface based on a condition of a color in the color image data acquired by color CCD camera 10, and apparatus operation control section 45 which in response to the determination of image processing section 40, stops the relative movement between semiconductor wafer W and the polishing surface and separates top ring 4 and the polishing surface from each other.
摘要:
A polishing apparatus has a top ring for holding a workpiece to be polished and a polishing table movable relative to the top ring. The polishing table has a polishing surface for polishing the workpiece held by the top ring. The polishing apparatus further has a polishing liquid supply device for supplying a polishing liquid to the polishing surface. At least one of the top ring and the polishing table reciprocates linearly in a first direction. The workpiece can be polished uniformly by the polishing surface because at least one of the top ring and the polishing table reciprocates linearly in the first direction.
摘要:
A polishing apparatus has a polishing surface, a top ring for holding a semiconductor wafer, and a top ring shaft for pressing the top ring against the polishing surface. The top ring has a retainer ring for holding a peripheral portion of the semiconductor wafer, a housing substantially in a form of a disk which is connected to the top ring shaft, a sliding contact joint interconnecting the retainer ring and the housing in a state such that the retainer ring and the housing are brought into sliding contact with each other.
摘要:
A dressing apparatus is used for dressing a polishing surface of a polishing table used for polishing a workpiece such as a semiconductor wafer. The dressing apparatus for dressing apparatus comprises a dresser having a dressing surface for dressing the polishing surface, and the dressing surface has an area which covers an entire area of the polishing surface.
摘要:
A polishing apparatus according to the present invention has a polishing surface (101), a top ring (1) for holding a semiconductor wafer (W), and a top ring shaft (11) for pressing the top ring (1) against the polishing surface (101). The top ring (1) has a retainer ring (3) for holding a peripheral portion of the semiconductor wafer (W), a housing (2) substantially in a form of a disk which is connected to the top ring shaft (11), a sliding contact joint (4, 5, 6, 2b) interconnecting the retainer ring (3) and the housing (2) in a state such that the retainer ring (3) and the housing (2) are brought into sliding contact with each other.