Patent ID: 11961741
Assignee: ASM IP HOLDING B.V.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The method according to claim 1, wherein the first portion of the dielectric layer is deposited on the side face and the second portion of the dielectric layer is deposited on the lateral face, wherein the first portion and the second portion have different resistances to fluorine and/or chlorine radicals under the first dry-etching conditions in a manner that an etch selectivity of one of the first portion and the second portion, whichever has a lower etch rate than that of another of the first portion and the second portion under the first dry-etching conditions, is 1.5 or higher, wherein the etch selectivity of the one of the first portion and the second portion is defined as a ratio of etch rate of the one of the first portion and the second portion to etch rate of another of the first portion and the second portion under the first dry-etching conditions.