Patent ID: 11935908
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensor comprising:
a first structure comprising a first substrate and a first internal wiring structure disposed below the first substrate, wherein the first substrate includes a first surface, a second surface opposite to the first surface, an active pixel region, and a through electrode region disposed adjacent to the active pixel region, wherein a plurality of active pixels are arranged in the active pixel region; and wherein the first internal wiring structure comprises a plurality of first internal wiring patterns;
a second structure comprising a second substrate and a second internal wiring structure on the second substrate, wherein the second substrate includes a driving circuit configured to drive the plurality of active pixels and is arranged on the first substrate; and
a through electrode layer in the through electrode region, wherein the through electrode layer at least partially fills a through electrode trench and connects the first internal wiring structure to the second internal wiring structure,
wherein the plurality of first internal wiring patterns comprise a first wiring pattern having a first opening, a second wiring pattern having a second opening, and a third wiring pattern having a third opening, wherein the first wiring pattern, the second wiring pattern, and the third wiring pattern are at different levels from each other sequentially from the first surface of the first substrate, and
wherein the through electrode layer contacts each of a connection portion of the second wiring pattern and a connection portion of the third wiring pattern due to the through electrode trench extending through the first opening, the second opening, and the third opening, wherein the connection portion of the second wiring pattern has a rectangular shape, and the connection portion of the third wiring pattern has a U shape,
wherein the connection portion of the third wiring pattern includes a first inner edge portion, a second inner edge portion that is opposite to the first inner edge portion, and a third inner edge portion that connects to the first inner edge portion and the second inner edge portion,
wherein the through electrode layer contacts the first inner edge portion, the second inner edge portion, and the edge inner portion.