Comparison of chemical-mechanical polishing processes

Semiconductor device manufacturing: process – Chemical etching – Combined with the removal of material by nonchemical means

Reexamination Certificate

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C438S005000, C438S008000, C438S014000, C438S926000, C216S084000, C216S088000, C451S005000, C451S041000, C451S057000

Reexamination Certificate

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06955987

ABSTRACT:
Chemical-mechanical polishing (“CMP”) processes performed on bodies (10), each having areas (16and18) of different depression pattern densities, are compared by correlating polishing data accumulated, for one such body, on an area (16) of one pattern density to polishing data accumulated, for that body, on an area of another pattern density for each of the CMP processes.

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