Patent ID: 11869916
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The method of claim 10, wherein forming the first plurality of dielectric layers comprises:
forming a base oxide layer covering the conductive bond pad, extending along the inner sidewall of the device substrate, and covering the backside of the device substrate, the base oxide layer having a base oxide layer thickness;
forming a nitride layer over the base oxide layer, the nitride layer having a nitride layer thickness; and
forming a first capping oxide layer over the nitride layer, the first capping oxide layer having a first capping oxide layer thickness, wherein the base oxide layer thickness plus the nitride layer thickness plus the first capping oxide layer thickness is less than the recess depth;
wherein the another of the first plurality of dielectric layers is an uppermost portion of the nitride layer.