摘要:
An electrolytic in-process dressing method, an electrolytic in-process dressing grinding apparatus, and an electrolytic in-process dressing grindstone, for grinding workpiece as the grindstone is being subjected to electrolytic in-process dressing, are provided, in which the grindstone is made of abrasive grains and a binding material which is capable of forming a uniform and fine passive layer at the grinding surface thereof and also capable of preventing excessive elusion of the binding material, thereby preventing the formation of chips at the ground surface in the course of grinding operation.
摘要:
Disclosed herein is a polishing device including a polishing plate having an upper surface on which a polishing pad is attached, a polishing head having a lower surface opposed to an upper surface of the polishing pad on the polishing plate, for holding a substrate to be polished on the lower surface, and a pressure source for applying a polishing pressure to the polishing head, whereby the substrate held by the polishing head is pressed against the upper surface of the polishing pad under the polishing pressure applied from the pressure source to perform polishing of the substrate. The polishing head is provided with a contact pressure adjusting mechanism capable of adjusting an in-plane contact pressure of the substrate against the upper surface of the polishing pad on the polishing plate at every area of the substrate. Accordingly, the uniformity and the planarity in the plane of the substrate surface to be polished can be improved with a high throughput.
摘要:
A fixed abrasive, chemical-mechanical polishing system which is particularly well suited for use in the manufacture of semiconductor devices, memory disks or the like.
摘要:
A single sensor 19 simultaneously measures the thickness and contour of a polishing pad 3 before and after polishing to determine changes in the thickness and contour of the polishing pad 3 caused by polishing. Based on these changes, a reproduction signal for pad reproduction or a replacement signal for pad replacement is output from a controlling means 13 to enable the surface accuracy of the polishing pad to be efficiently controlled.
摘要:
An improved and new apparatus and process for conditioning a chemical-mechanical polishing (CMP) pad has been developed, wherein sufficient conditioning is assured in order to restore the "fresh pad" polish removal rate performance of the polishing pad, while at the same time prolong the life of the CMP polishing pad. The result is a lower cost process and improved product throughput for the CMP apparatus.
摘要:
A chemical-mechanical polishing system includes a polishing pad having a polishing surface for polishing the semiconductor substrate, and a polishing pad brush including a plurality of bristles attached to a support for cleaning the polishing surface of the polishing pad. In addition, a polishing pad brush arm is operatively coupled to the brush support for transferring the polishing pad brush to and from the polishing pad. Related methods are also discussed.
摘要:
A laser element is mounted above a polishing pad of a workpiece polishing machine to monitor and control flatness of the pad. Actual flatness of the pad is determined by a computer processor which receives thickness measurements from the laser element and compares the thickness at the inner diameter portion of the pad with the thickness at the outer diameter portion of the pad. If the flatness varies substantially from a target flatness, a conditioning device mounted on the machine is moved appropriately relative to the pad to conform its flatness to the target flatness.
摘要:
The present invention relates to an article of manufacture or polishing pad for altering a surface of a workpiece, such as polishing or planarizing a semiconductor device. The article includes a polymeric matrix impregnated with a plurality of polymeric microelements, each polymeric microelement having a void space therein. The article has a work surface and a subsurface proximate to the work surface. When the article is in contact with a working environment, polymeric microelements at the work surface of the article are less rigid than polymeric elements embedded in the subsurface. As the work surface of the article is abraded during use, the work surface of the pad may be continuously regenerated. In alternative preferred embodiments, the work surface may further include a minitexture and/or a macrotexture. Preferably, the minitexture is formed by fractal patterning at least a portion of the work surface. The present invention also includes methods for decreasing the effective rigidity of polymeric microelements at the work surface of the article, regenerating the work surface of the article and planarizing a surface of a semiconductor device utilizing the article.
摘要:
A polishing pad conditioner and a method for conditioning a polishing pad of a chemical/mechanical polishing system. The polishing pad conditioner includes a body defining an upper surface and a lower surface; at least one conditioning element mounted at the lower surface of the body, the conditioning element including a conditioning surface and an opening adjacent the conditioning surface; and a vacuum source operatively connected to the opening in the conditioning element. The method for conditioning a polishing pad includes the steps of holding a polishing pad conditioner including a conditioning element, a conditioning surface thereon and an opening in the conditioning element adjacent the conditioning surface in contact with a surface of the polishing pad; applying a vacuum source to the pad, the vacuum source being operatively connected to the conditioning element; and conditioning the surface of the polishing pad while simultaneously vacuuming particles therefrom.
摘要:
Method and apparatus for conditioning a polishing pad. In particular, a check loop system and associated code are described for monitoring force applied on a pad from an end effector attached to an arm. The pad is conditioned by the end effector for mechanical polishing to remove matter from a substrate assembly. This may be done with chemical-mechanical-polishing and is often used for planarization of a substrate assembly. Described are a modular turret and drive system which are used to manipulate an end effector over a pad.