Patent ID: 11961854
Assignee: nan
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device, comprising:
a dielectric layer, with a convexity or a concavity; and
a semiconductor substrate, comprising a first type semiconductor layer and a second type semiconductor layer sequentially stacked on the dielectric layer, wherein the first type semiconductor layer is disposed on the convexity or the concavity, a top surface and a bottom surface of the first type semiconductor layer are protruded according to the convexity or recessed according to the concavity, and a top surface and a bottom surface of the second type semiconductor layer are protruded according to the convexity or recessed according to the concavity, and wherein:
the semiconductor device is an image sensor that comprises a photodiode comprising the first type semiconductor layer and the second type semiconductor layer, and
a thickness of the dielectric layer gradually decreases outward from a center of the convexity or gradually increases outward from a center of the concavity.