Patent ID: 11901386
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An image sensor comprising:
a first region and a second region surrounding the first region;
a substrate including a first surface and a second surface that is opposite to the first surface;
a photoelectric conversion element disposed inside the substrate in each of the first and second regions;
a microlens disposed on the first surface of the substrate in the first region, the microlens is not disposed on the first surface of the substrate in the second region; and
a pattern structure disposed on the first surface of the substrate in the second region, the pattern structure including at least one lateral side wall having a sloped profile that slopes towards the first region,
wherein the pattern structure includes a first layer and a second layer disposed on the first layer, the first layer and the second layer including different metals from each other,
wherein a first lateral sidewall of the at least one lateral side wall of the pattern structure has a convex surface shape curving outwardly towards the first region, and
wherein an uppermost surface of the first lateral sidewall is disposed farther away from the first region than all other surfaces of the first lateral sidewall and a lowermost surface of the first lateral sidewall is disposed closest to the first region than all other surfaces of the first lateral sidewall.