摘要:
A processing apparatus includes a chuck table that holds a workpiece by a holding face, a processing unit that processes the workpiece with a grinding whetstone or a polishing pad, a movement unit for moving the chuck table and the processing unit parallel to the holding face, a processing feeding unit for moving the chuck table and the processing unit in a direction orthogonal to the holding face, an inspection unit to inspect a process mark of the workpiece during processing, a dressing unit to dress the grinding whetstone or the polishing pad of the processing unit, and a control unit. When a process mark of a size exceeding a threshold value is detected on the process face of the workpiece, the control unit stops processing of the workpiece, and after the grinding whetstone or the polishing pad is dressed, restarts processing.
摘要:
A carrier head includes a housing configured to enclose a wafer and a retainer ring attached to the housing. The retainer ring includes a body and an abrasive structure. The body includes an inner periphery configured to surround the wafer, an outer periphery, and a surface connecting the inner periphery and the outer periphery. The abrasive structure is attached to the surface of the body.
摘要:
Methods and systems for evaluating and/or increasing CMP pad dresser performance are provided. In one aspect, for example, a method of identifying overly-aggressive superabrasive particles in a CMP pad dresser can include positioning a CMP pad dresser having a plurality of superabrasive particles on an indicator substrate such that at least a portion of the plurality of superabrasive particles of the CMP pad dresser contact the indicator substrate, and moving the CMP pad dresser across the indicator substrate in a first direction such that the portion of the plurality of superabrasive particles create a first marking pattern on the substrate, wherein the first marking pattern identifies a plurality of working superabrasive particles from among the plurality of superabrasive particles.
摘要:
An apparatus dresses a polishing pad. The apparatus includes a dresser drive shaft which is rotatable and vertically movable, a dresser flange coupled to the dresser drive shaft and configured to secure a dressing member thereto, a spherical bearing provided in the dresser flange and configured to allow the dressing member to tilt with respect to the dresser drive shaft, and a spring mechanism configured to generate a force against a tilting motion of the dressing member.
摘要:
The present invention discloses a CMP device and methods that are capable of improving CMP processing through incorporation of vibration sources which produce vibrations in a direction substantially parallel to the working surface of the CMP pad. The CMP device includes a CMP pad dresser. Such a method can include steps of vibrating a CMP pad, CMP pad dresser, or wafer in a direction substantially parallel to a working surface of the CMP pad and engaging the CMP pad dresser with a working surface of a CMP pad The results of vibrating the superabrasive particles can provide benefits to both the CMP pad and dresser, according to several aspects disclosed herein.
摘要:
A method of conditioning a CMP polishing pad to attain a desired thickness profile in a polished layer on a wafer is disclosed. The incoming thickness profile of the layer to be polished, the thickness profile of the polishing pad, a polish rate of layer as a function of pressure and the removal rate of polishing pad material by a conditioning block are used to compute a sweep pattern for the conditioning block which will produce a desired thickness profile on the polishing pad. The method may be applied to maintaining the desired profile on the polishing pad during the course of polishing multiple wafers. The pad profile may be adjusted to keep pressure between the pad and the wafer to a safe limit to reduce polishing defects.
摘要:
An object of the present invention is to provide a polishing method for diminishing concave defects of a glass substrate used in a reflective mask for EUVL and the like. The invention relates to a method of polishing a glass substrate which comprises polishing a major surface of the glass substrate while feeding a polishing slurry between the glass substrate and a pad surface of a polishing pad, wherein the polishing load of the polishing pad is from 1 to 60 g/cm2. The pad surface of the polishing pact is preferably dressing-processed.
摘要翻译:本发明的目的是提供一种用于减少用于EUVL等的反射掩模中的玻璃基板的凹陷缺陷的抛光方法。 本发明涉及一种抛光玻璃基板的方法,其中包括在玻璃基板和抛光垫的焊盘表面之间馈送抛光浆料的同时抛光玻璃基板的主表面,其中抛光垫的抛光载荷为1 至60g / cm 2。 抛光体的焊盘表面优选进行修整处理。
摘要:
To provide a shaft motion detection mechanism capable of detecting the displacement of a rotating body in a direction along a rotational axis and whether or not the rotating body is rotated, and a conditioner head capable of detecting the displacement of a polishing disk in a direction along a rotational axis and whether or not the polishing disk is rotated. A conditioner head 10 has a shaft 18 rotating around a rotational axis C, a cylindrical shaft 19 attached to the shaft 18 so as to be displaced along the rotational axis C, a frame 16 rotatably supporting the shaft 19, a plurality of projections 18c formed on the surface of the shaft 18 so as to be aligned in a circumferential direction, a projection 18d formed throughout the entire circumference on the surface of the shaft 18, and proximity sensors 30a to 30c arranged around the rotational axis C so as to face the shaft 18. The angle formed around the rotational axis C by the proximity sensors 30a and 30c is larger than the angle formed around the rotational axis C by the circumferential width of each projection 18c and the angle formed around the rotational axis C by the space between the projections 18c.
摘要:
In the production of a glass substrate for magnetic disk, the present invention provides a method for producing a glass substrate for magnetic disk including a step of polishing a main surface of a circular glass substrate using a polishing pad made of a foamed resin while feeding a polishing liquid containing an abrasive, in which a polishing pad made of a foamed resin having an international rubber hardness of 45 IRHD or less, the hardness being measured at a dry state before contact with a slurry by the M method defined in JIS K6253, is used as a starting polishing pad and polishing is started after a polishing surface of the starting polishing pad is subjected to a dressing treatment to adjust the pad so that an open pore area ratio is 8% or more and an average circle equivalent diameter of open pores is 10 μm or more, in order to suppress an increase in roll-off in the polishing step of the main surface of the circular glass plate.
摘要:
A pedestal pad (workpiece supporting table pad) is arranged on the top of a pedestal (workpiece supporting table) for temporarily placing and holding a pre-polished or post-polished wafer (workpiece). This pedestal pad is formed of resin, and at least a surface of the pedestal pad which comes into contact with the wafer is non-absorbable to a fluid. The tissue of the pedestal pad is dense and smooth, and does not have any cavity, such as fine holes, which holds the fluid.