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 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 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 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 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 prevent scratches in a polished surface of a polishing object, caused by foreign matter adhering to a surface of a polishing member, thus preventing the attendant lowering of the yield even when the polishing object is large-sized. The polishing method includes: specifying a foreign matter adhesion position or a foreign matter adhesion area in a surface of the polishing member; and intensively cleaning the foreign matter adhesion position or the foreign matter adhesion area in the surface of the polishing member.
摘要:
The object of the present invention is to provide a polishing apparatus that can supply a polishing solution having a non-varying distribution of abrading particles sizes at a steady rate. An apparatus (20) for delivering a polishing solution to a polishing apparatus (22) is disclosed. The apparatus (20) comprises: a solution passage for transporting the polishing solution; and an ultrasonic vibrator (72) being provided in at least one location of the solution passage.