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US 10,484,590 B2Granted
Integrated circuit device
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsZen-Fong Huang, Volume Chien
Life of this patent
Estimating the term…
Abstract
Integrated circuit devices are disclosed. The integrated circuit device includes a focus detection pixel and a lens. The focus detection pixel includes a photosensitive unit and a photo-insensitive unit in a substrate. The lens is disposed over the focus detection pixel, wherein the photosensitive unit and the photo-insensitive unit are disposed opposite to each other with respect to an optical axis of the lens, and a light beam passing through the lens is simultaneously incident into the photosensitive unit and the photo-insensitive unit.
Claims21
An integrated circuit device, comprising:
- a focus detection pixel, comprising a photosensitive unit and a photo-insensitive unit in a substrate;
- and
- a lens having a single radius of curvature and an optical axis passing through a surface of the curvature at the center of the lens, disposed over the focus detection pixel and fully covering the photosensitive unit and the photo-insensitive unit, wherein the photosensitive unit is disposed at a first side of the optical axis and the photo-insensitive unit is disposed at a second side opposite to the first side of the optical axis, wherein a top surface connecting to a sidewall of the photosensitive unit is flush with a top surface connecting to a sidewall of the photo-insensitive unit, and the sidewalls of the photosensitive unit disposed at the first side and the photo-insensitive unit disposed at the second side are in contact at the optical axis, and
- wherein a light beam passing through the lens is simultaneously incident into the photosensitive unit and the photo-insensitive unit.
1 more element
An integrated circuit device, comprising:
- a plurality of image sensing pixels;
- a focus detection pixel pair, disposed among the image sensing pixels and comprising a first focus detection pixel and a second focus detection pixel which are horizontally disposed, wherein the first focus detection pixel comprises a first photosensitive unit and a first photo-insensitive unit, and the second focus detection pixel comprises a second photosensitive unit and a second photo-insensitive unit;
- and
- a first lens over the image sensing pixels, a second lens over the first focus detection pixel and a third lens over the second focus detection pixel,
- wherein the second lens has a single radius of curvature and an optical axis passing through a surface of the curvature at the center of the second lens and fully covers the first photosensitive unit and the first photo-insensitive unit, wherein the first photosensitive unit is disposed at a first side of the optical axis of the second lens, and the first photo-insensitive unit is disposed at a second side of the optical axis of the second lens that is opposite to the first side, wherein a top surface connecting to a sidewall of the first photosensitive unit is flush with a top surface connecting to a sidewall of the first photo-insensitive unit, and the sidewalls of the first photosensitive unit disposed at the first side and the first photo-insensitive unit disposed at the second side are in contact at the optical axis,
- wherein a light beam passing through the second lens over the first focus detection pixel is simultaneously incident into the first photosensitive and photo-insensitive units, and a light beam passing through the second lens over the second focus detection pixel is simultaneously incident into the second photosensitive and photo-insensitive units.
3 more elements
An integrated circuit device, comprising:
- a plurality of image sensing pixels;
- a focus detection pixel pair, comprising a first focus detection pixel and a second focus detection pixel, wherein the first focus detection pixel comprises a first photosensitive unit and a first photo-insensitive unit, and the second focus detection pixel comprises a second photosensitive unit and a second photo-insensitive unit;
- and
- a first lens over the image sensing pixels, a second lens over the first focus detection pixel and a third lens over the second focus detection pixel, wherein a size of the second lens over the first focus detection pixel and a size of the third lens over the second focus detection pixel are respectively larger than a size of the first lens over the image sensing pixel,
- wherein the second lens has a single radius of curvature and an optical axis passing through a surface of the curvature at the center of the second lens and fully covers the first photosensitive unit and the first photo-insensitive unit, wherein the first photosensitive unit is disposed at a first side of the second lens with respect to the optical axis, and the first photo-insensitive unit is disposed at the second side of the second lens opposite to the first side, wherein a top surface connecting to a sidewall of the first photosensitive unit is flush with a top surface connecting to a sidewall of the first photo-insensitive unit, and the sidewalls of the first photosensitive unit disposed at the first side and the first photo-insensitive unit disposed at the second side are in contact at the optical axis.
2 more elements
Dependencies are inferred from the claim text.