Patent ID: 11862506
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A vacuum substrate transfer module comprising:
an atmospheric substrate transfer module; a first vacuum substrate transfer module having a first transfer space;
a second vacuum substrate transfer module disposed under the first vacuum substrate transfer module, the second vacuum substrate transfer module having a second transfer space in communication with the first transfer space, the second vacuum substrate transfer module having external dimensions smaller than external dimensions of the first vacuum substrate transfer module in a plan view; a load lock module disposed between the atmospheric substrate transfer module and the second vacuum substrate transfer module; and
a vacuum substrate transfer robot disposed in the first transfer space or the second transfer space, the vacuum substrate transfer robot being configured to
transfer a substrate between the first transfer space and a first external module at a first height,
transfer the substrate between the first transfer space and the second transfer space, and
transfer the substrate between the second transfer space and a second external module at a second height different from the first height, wherein the first height is higher than the second height.