Patent ID: 11875970
Assignee: ADVANCED MICRO-FABRICATION EQUIPMENT INC. CHINA
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The radio frequency electrode assembly according to claim 9, wherein N is larger than 1 and wherein the cross section of the first till the N-1th areas of the second fluid passage sequentially increase, the cross section of the Nth area of the second fluid passage being smaller than the size of the N-1th area of the second fluid passage; the distances from the bottoms of the first till the Nth areas of the second fluid passage to the bottom of the focus ring are equal; and the distances from the tops of the first till the N-1th areas of the second fluid passage sequentially decrease, wherein the distance from the top of the Nth area of the second fluid passage is greater than the distance from the top of the N-1th area of the second fluid passage to the bottom of the focus ring.