Patent ID: 11876110
Assignee: OMNIVISION TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An image sensor, comprising:
a plurality of pixels arranged in rows and columns of a pixel array disposed in a semiconductor material, wherein each pixel comprises a plurality of photodiodes, wherein the plurality of pixels are configured to receive an incoming light through an illuminated surface of the semiconductor material,
wherein each pixel comprises:
a first photodiode comprising a silicon (Si) material; and
a second photodiode comprising the Si material and a silicon germanium (SiGe) material,
wherein the SiGe material of the second photodiode is disposed in a trench formed in the semiconductor material, and
wherein the first photodiode further comprises an additional SiGe material, and the additional SiGe material of each individual first photodiode is disposed in an additional trench adjacent to the trench formed in the semiconductor material.