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    • 2. 发明专利
    • Equipment and method for manufacturing semiconductor device
    • 用于制造半导体器件的设备和方法
    • JP2008153434A
    • 2008-07-03
    • JP2006339904
    • 2006-12-18
    • Elpida Memory Incエルピーダメモリ株式会社
    • TORII YASUSHI
    • H01L21/304B24B37/04B24B37/30
    • B24B37/32
    • PROBLEM TO BE SOLVED: To provide a retainer ring structure capable of stabilizing polishing uniformity in a wafer surface even when a retainer ring for CMP is worn. SOLUTION: Grooves 2a, 2b are prepared on the surface of the retainer ring 1, which contacts a polishing pad 8. The concentric grooves 2b are the grooves for changing the contact area of the retainer ring 1 with respect to the polishing pad 8 as the retainer ring 1 is worn by wafer polishing operations. The respective grooves 2b are formed to have the depth of 0.1 mm, 0.2 mm, 0.3 mm in order from the outer circumference to the inner circumference of the retainer ring 1. The grooves 2a formed to cross the retainer ring 1 are the grooves for promoting the introduction of a polishing agent to the surface of a semiconductor wafer 5 and facilitating the dechuck of a head 3 with respect to the semiconductor wafer 5. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使当用于CMP的保持环被磨损时,提供能够稳定晶片表面的抛光均匀性的保持环结构。

      解决方案:在保持环1的与抛光垫8接触的表面上制备槽2a,2b。同心槽2b是用于改变保持环1相对于抛光垫的接触面积的槽 如图8所示,通过晶片抛光操作佩戴保持环1。 相应的槽2b形成为从保持环1的外周到​​内周的顺序为0.1mm,0.2mm,0.3mm的深度。形成为横过保持环1的槽2a是用于促进 将抛光剂引入到半导体晶片5的表面,并且有助于相对于半导体晶片5去除头3的脱扣。版权所有(C)2008,JPO&INPIT