Patent ID: 11923231
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A substrate table, comprising:
a main body having a surface and a plurality of burls extending from the surface, wherein the burls are configured to support a substrate on the main body;
a plurality of vacuum channels provided in the burls, configured to apply a vacuum to the substrate, wherein the vacuum channels are distributed throughout the main body and arranged in a grid pattern, wherein the vacuum channels are uniformly formed in all regions of the main body, and the all regions of the main body comprise a central region and a periphery region connected to the central region and close to an edge of the main body; and a plurality of gas supply channels provided in the main body and respectively having a gas supply opening exposed from the surface, configured to supply a gas to the substrate, wherein the gas supply channels are formed between the burls and between the vacuum channels.