Image sensors with multiple lenses per pixel region
AssigneeSamsung Electronics Co., Ltd.
InventorsYoung Gu JIN, Young Chan KIM, Min-Sun KEEL
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Abstract
Image sensors are provided. An image sensor includes a substrate that includes a pixel region, a first surface, and a second surface that is opposite the first surface. The image sensor includes first and second photogates that are on the first surface and are configured to generate electric charge responsive to incident light in the pixel region. Moreover, the image sensor includes first and second lenses that are on the second surface and are configured to pass the incident light toward the first and second photogates.
Claims20
An image sensor comprising:
- a substrate comprising a pixel region, a first surface, and a second surface that is opposite the first surface;
- first and second photogates that are on the first surface and are configured to generate electric charge responsive to incident light in the pixel region;
- and
- first and second microlenses that share a pixel comprising the pixel region, are on the second surface, and are configured to pass the incident light toward the first and second photogates.
An image sensor comprising:
- a substrate comprising a pixel region, a first surface, and a second surface that is opposite the first surface;
- first and second photogates on the first surface and configured to generate electric charge responsive to incident light in the pixel region;
- a trench isolation layer that defines the pixel region;
- first and second scattering structures that are configured to scatter the incident light in the pixel region;
- and
- first and second lenses on the second surface and configured to pass the incident light into the pixel region,
- wherein the first scattering structure and the first lens vertically overlap each other, and the second scattering structure and the second lens vertically overlap each other.
An image sensor comprising:
- a substrate comprising a pixel region, a first surface, and a second surface that is opposite the first surface;
- first and second photogates on the first surface and configured to generate electric charge responsive to incident light in the pixel region;
- a shallow trench isolation (STI) layer that extends a first distance in a direction from the first surface toward the second surface in the pixel region;
- a deep trench isolation (DTI) layer that defines the pixel region and extends a second distance in the direction, wherein the second distance is longer than the first distance;
- and
- first and second lenses on the second surface and configured to pass the incident light into the pixel region.
Dependencies are inferred from the claim text.