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

Claim 10:
11. 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 first pixel region within the substrate;
a first photoelectric conversion region disposed within the first pixel region; and
a first shallow trench extending from the first surface of the substrate into the substrate and configured to at least partially define a first pattern in the first pixel region,
wherein, in a plan view, the first pattern comprises a first corner, a second corner separated from the first corner in a first horizontal direction, a third corner separated from the first corner in a second horizontal direction that crosses the first horizontal direction, and a fourth corner separated from the second corner in the second horizontal direction and separated from the third corner in the first horizontal direction,
wherein, in the plan view, a radius of curvature of the second corner is less than a radius of curvature of the first corner.