Patent ID: 11908878
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor device, comprising:
a substrate having a first side and a second side opposite to the first side;
an interconnect, located on the first side;
a plurality of first isolations located in the substrate at the first side and electrically isolated from the interconnect;
a photodiode array, disposed in the substrate within an active region of the substrate and electrically connected to the interconnect;
an isolation structure, extending from the second side of the substrate to a position in the substrate within the active region, wherein the photodiode array is surrounded by and spaced apart from the isolation structure, and the isolation structure comprises a conductive grid; and
a plurality of conductive structures, disposed in the substrate within a peripheral region of the substrate and electrically connected to the interconnect, wherein the conductive grid is electrically connected to the interconnect through the conductive structures and is electrically isolated from the photodiode array,
wherein the conductive structures penetrate through the first isolations for electrically connecting to the interconnect.