Patent ID: 11935826
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method comprising:
forming a conductive pad;
depositing a first dielectric material over the conductive pad to form a first passivation layer, wherein the first passivation layer has a first dielectric constant, wherein the first passivation layer is a low-k passivation layer;
forming a capacitor over the first passivation layer;
depositing a second dielectric material same as the first dielectric material over the capacitor to form a second passivation layer, wherein the first passivation layer has a higher porosity than the second passivation layer, wherein the second passivation layer has a second dielectric constant higher than the first dielectric constant, wherein the second passivation layer is a non-low-k passivation layer;
depositing a third passivation layer over the second passivation layer;
forming a first redistribution line penetrating through the second passivation layer to contact a top surface of a capacitor electrode of the capacitor; and
forming a second redistribution line penetrating through both of the second passivation layer and the first passivation layer to contact the conductive pad.