Patent ID: 11923228
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A stage to be disposed in a chamber of a plasma processing apparatus, the stage comprising:
a chuck including a first mounting portion for a substrate and a first hole through the first mounting portion;
a base disposed beneath the chuck, the base including a second hole through the base, and the second hole communicating with the first hole;
a first cylindrical liner disposed in the second hole, the first cylindrical liner having a relative permittivity of 5 or less;
an edge ring surrounding the first mounting portion; and
a second cylindrical liner having a relative permittivity of 5 or less,
wherein the base includes a second mounting portion for the edge ring and a third hole through the second mounting portion, and
wherein the second cylindrical liner is disposed in the third hole.