Patent ID: 11948957
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensor comprising:
a substrate having a first surface and a second surface facing each other;
a deep trench extending from the first surface to the second surface of the substrate and configured to define a pixel region within the substrate;
a photoelectric conversion region disposed within the pixel region; and
a shallow trench extending from the first surface of the substrate into the substrate and configured to at least partially define a pattern within the pixel region,
wherein, in a plan view, the pattern has a first corner, a second corner facing the first corner in a first diagonal direction, a third corner, and a fourth corner facing the third corner in a second diagonal direction that crosses the first diagonal direction,
wherein, in the plan view, a radius of curvature of the third corner is less than a radius of curvature of the first corner.