Patent ID: 11890718
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 14:
15. A chemical mechanical polishing (CMP) system, comprising:
a head connected to a carousel of the CMP system;
a plurality of tray assemblies located below the head;
a center tray having a plurality of arm portions equal to a number of the plurality of tray assemblies, each arm portion connected to a tray assembly;
each tray assembly of the plurality of tray assemblies including:
a dovetail joint including a first joint part and a second joint part that interlocks with the first joint part;
a first tray having a first top surface and a first bottom surface opposite the first top surface, the first tray having the first joint part on the first bottom surface;
a second tray having a second top surface and a second bottom surface opposite the second top surface, the second top surface of the second tray facing the first bottom surface of the first tray, the second tray having the second joint part on the second top surface, the first joint part with the second joint part being mateable with each other, the second tray being attached to the first tray when the first joint part is mated with the second joint part; and
a plurality of fasteners positioned at selected locations of the first tray and the second tray,
wherein at least one of the plurality of fastener is positioned adjacent to the first joint part of the first tray,
wherein the first joint part is a female dovetail and the second joint part is a male dovetail, and
wherein, in operation, the male dovetail of the second tray slidably inserts into the female dovetail of the first tray to secure the first tray to the second tray.