Patent ID: 11948955
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 29:
30. An image sensor comprising:
a sensor substrate comprising a plurality of first photosensitive cells configured to sense light and a plurality of second photosensitive cells configured to sense light; and
a color separating lens array provided above the sensor substrate and comprising a plurality of first regions and a plurality of second regions, wherein the plurality of first regions respectively correspond to the plurality of first photosensitive cells and have a first fine structure, and the plurality of second regions respectively correspond to the plurality of second photosensitive cells and have a second fine structure that is different from the first fine structure,
wherein the first fine structure and the second fine structure are configured to form a phase distribution below the plurality of first regions and the plurality of second regions, wherein light of a first wavelength and light of a second wavelength among incident light incident on the color separating lens array are branched into different directions and focused on the plurality of first photosensitive cells and the plurality of second photosensitive cells, respectively, based on the phase distribution,
wherein the first fine structure and the second fine structure respectively comprise a plurality of nanoposts,
wherein each of the plurality of nanoposts comprises a first nanopost and a second nanopost that is provided on the first nanopost,
wherein a location of the second nanopost coincides with a location of the first nanopost at a center of the image sensor, and the second nanopost is shifted toward the center of the image sensor with respect to the first nanopost at a peripheral portion of the image sensor, and
wherein each first region among the plurality of first regions and each second region among the plurality of second regions are directly adjacent to each other.