发明授权
US09409276B2 CMP polishing pad having edge exclusion region of offset concentric groove pattern 有权
CMP抛光垫具有偏移同心凹槽图案的边缘排除区域

CMP polishing pad having edge exclusion region of offset concentric groove pattern
摘要:
The invention provides a polishing pad and a method of using the polishing pad for chemically-mechanically polishing a substrate. The polishing pad comprises at least a grooved region and an exclusion region, wherein the exclusion region is adjacent to the circumference of the polishing pad, and wherein the exclusion region is devoid of grooves.
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