Patent ID: 11908681
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  G | IPC B  H

Claim 13:
14. A semiconductor fabricating system, comprising:
a chamber;
a wafer holder suspending from a top surface of the chamber;
a first brush assembly in the chamber and comprising:
a first base plate;
an inner brush member over the first base plate; and
an outer brush member over the first base plate and surrounding the inner brush member, wherein the outer brush member has a vertical thickness greater than a vertical thickness of the inner brush member, wherein the outer brush member has a material softer than a material of the inner brush member, wherein the outer brush member has a tapered top portion in a cross-sectional view, wherein an upper surface of the inner brush member is in a level position that is higher than a lowermost position of the tapered top portion and lower than an uppermost position of the tapered top portion, wherein the inner brush member comprises inner grooves, wherein the outer brush member comprises outer grooves, and wherein the inner and outer grooves are substantially aligned;

a first manipulate module connected to the first brush assembly and configured to manipulate a movement of the first brush assembly in the chamber;
a second brush assembly in the chamber, wherein the second brush assembly has a configuration different from the first brush assembly; and
a second manipulate module connected to the second brush assembly and configured to manipulate a movement of the second brush assembly in the chamber.