摘要:
A polishing method can automatically reset polishing conditions according to a state of a polishing member based on data on a polishing profile changing with time, thereby extending life of the polishing member and obtaining flatness of a polished surface with higher accuracy. The polishing method, includes steps of: independently applying a desired pressure by each of pressing portions of a top ring on a polishing object; estimating a polishing profile of the polishing object based on set pressure values, and calculating a recommended polishing pressure value so that a difference between the polishing profile of the polishing object after it is polished under certain polishing conditions and a desired polishing profile becomes smaller; and polishing the polishing object with the recommended polishing pressure value.
摘要:
A polishing method can automatically reset polishing conditions according to a state of a polishing member based on data on a polishing profile changing with time, thereby extending life of the polishing member and obtaining flatness of a polished surface with higher accuracy. The polishing method, includes steps of: independently applying a desired pressure by each of pressing portions of a top ring on a polishing object; estimating a polishing profile of the polishing object based on set pressure values, and calculating a recommended polishing pressure value so that a difference between the polishing profile of the polishing object after it is polished under certain polishing conditions and a desired polishing profile becomes smaller; and polishing the polishing object with the recommended polishing pressure value.
摘要:
A polishing method can automatically reset the polishing conditions according to the state of a polishing member based on data on the polishing profile changing with time, thereby extending the life of the polishing member and obtaining flatness of the polished surface with higher accuracy. The polishing method, including the steps of: independently applying a desired pressure by each of the pressing portions of the top ring on the polishing object; estimating a polishing profile of the polishing object based on set pressure values, and calculating a recommended polishing pressure value so that the difference between the polishing profile of the polishing object after it is polished under certain polishing conditions and a desired polishing profile becomes smaller; and polishing the polishing object with the recommended polishing pressure value.
摘要:
A polishing method can automatically reset polishing conditions according to a state of a polishing member based on data on a polishing profile changing with time, thereby extending life of the polishing member and obtaining flatness of a polished surface with higher accuracy. The polishing method, includes steps of: independently applying a desired pressure by each of pressing portions of a top ring on a polishing object; estimating a polishing profile of the polishing object based on set pressure values, and calculating a recommended polishing pressure value so that a difference between the polishing profile of the polishing object after it is polished under certain polishing conditions and a desired polishing profile becomes smaller; and polishing the polishing object with the recommended polishing pressure value.
摘要:
A polishing apparatus (30) has a polishing surface (32), a top ring (36) for holding a wafer (W), motors (46, 56) to move the polishing surface (32) and the wafer (W) relative to each other at a relative speed, and a vertical movement mechanism (54) to press the wafer (W) against the polishing surface (32) under a pressing pressure. The polishing apparatus (30) also has a controller (44) to adjust a polishing condition in a non-Preston range in which a polishing rate is not proportional to a product of the pressing pressure and the relative speed. The polishing apparatus (30) can simultaneously achieve uniform supply of a chemical liquid to a surface of the wafer (W) and a uniform polishing rate within the surface of the wafer (W).
摘要:
A polishing method can automatically reset polishing conditions according to a state of a polishing member based on data on a polishing profile changing with time, thereby extending life of the polishing member and obtaining flatness of a polished surface with higher accuracy. The polishing method, includes steps of: independently applying a desired pressure by each of pressing portions of a top ring on a polishing object; estimating a polishing profile of the polishing object based on set pressure values, and calculating a recommended polishing pressure value so that a difference between the polishing profile of the polishing object after it is polished under certain polishing conditions and a desired polishing profile becomes smaller; and polishing the polishing object with the recommended polishing pressure value.
摘要:
A polishing method can automatically reset polishing conditions according to a state of a polishing member based on data on a polishing profile changing with time, thereby extending life of the polishing member and obtaining flatness of a polished surface with higher accuracy. The polishing method, includes steps of: independently applying a desired pressure by each of pressing portions of a top ring on a polishing object; estimating a polishing profile of the polishing object based on set pressure values, and calculating a recommended polishing pressure value so that a difference between the polishing profile of the polishing object after it is polished under certain polishing conditions and a desired polishing profile becomes smaller; and polishing the polishing object with the recommended polishing pressure value.
摘要:
An electrolytic processing apparatus can increase the efficiency of the dissociation reaction of water and efficiently perform electrolytic processing, and can eliminate the need for an operation for a change of ion exchanger. The electrolytic processing apparatus includes: a processing electrode and a feeding electrode; a liquid supply section for supplying a liquid containing an ion-exchange material between the workpiece and at least one of the processing electrode and the feeding electrode; a power source for applying a voltage between the processing electrode and the feeding electrode; and a drive section for moving the workpiece and at least one of the processing electrode and the feeding electrode relative to each other; wherein electrolytic processing of the workpiece is carried out while keeping the workpiece not in contact with and close to the processing electrode at a distance of not more than 10 μm.
摘要:
A method of dressing a polishing member with a diamond dresser having diamond particles arranged on a surface thereof is provided. The method includes determining dressing conditions by performing a simulation of a distribution of a sliding distance of the diamond dresser on a surface of the polishing member, and dressing the polishing member with the diamond dresser under the dressing conditions determined. The simulation includes calculation of the sliding distance corrected in accordance with a depth of the diamond particles thrusting into the polishing member.
摘要:
A polishing tool uses a fixed abrasive polisher which can perform polishing of an object with good surface accuracy for a long period of time. A mixture of abrasive grains, having an average particle diameter of 0.01 to 2.0 &mgr;m, and comprising at least one of cerium oxide, manganese oxide, titanium oxide, zirconia, silica, and iron oxide, and polyimide resin particles or phenolic resin particles having an average particle diameter of 0.1 to 20 &mgr;m is heated at a temperature of 120 to 250° C. under a pressure of 9,800 to 49,000 kPa (100 to 500 kg/cm2) to mold the mixture into a desired shape. This can provide a polisher 4 having abrasive grains dispersed in a thermosetting resin, and having abrasive grains of 20 to 60% by volume, a binder of 30 to 50% by volume, pores of not more than 40% by volume, and a Rockwell hardness of not less than 30 in terms of the H scale. This polisher is attached to a surface plate by an epoxy adhesive to produce a polishing tool.