Patent ID: 11964359
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 24:
25. A polishing article, comprising:
a polishing pad body, having:
a polishing surface, comprising:
one or more first polishing features having an upper surface and a sidewall defining a plurality of grooves, wherein the upper surface comprises a first polymer material having a first zeta potential; and
one or more second polishing features defining a bottom surface of the plurality of grooves, wherein the bottom surface comprises a second polymer material having a second zeta potential different than the first zeta potential;
wherein:
the polishing pad body further comprises a third polymer material having a third zeta potential, wherein the third zeta potential differs from the first zeta potential and the second zeta potential; or
the sidewall comprises a third polymer material having a third zeta potential, wherein the third zeta potential differs from the first zeta potential and the second zeta potential.