Pixel with strained silicon layer for improving carrier mobility and blue response in imagers
AssigneeMicron Technology, Inc.
InventorChandra Mouli
Life of this patent
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Abstract
An imager having a pixel cell having an associated strained silicon layer. The strained silicon layer increases charge transfer efficiency, decreases image lag, and improves blue response in imaging devices.
Claims20
A system, comprising:
- an imaging device including at least one pixel cell having a photosensor with a photosensitive region buried at least in part within a substrate such that the photosensitive region is separated from a strained silicon layer by an intermediary portion of the substrate;
- a central processing unit operably connected to the imaging device via a first bus;
- and
- a memory component operably connected to the central processing unit via a second bus, wherein:
- the memory component is configured to (i) receive, via the first bus or the second bus, a digital image from the imaging device and (ii) store the digital image, and
- the central processing unit is configured to (a) receive, via the second bus, the digital image from the memory component and (b) process the digital image.
A pixel cell, comprising a photosensor having a photosensitive region buried at least in part within a substrate such that the photosensitive region is separated from a strained silicon layer by an intermediary portion of the substrate.
An imaging device comprising a plurality of pixel cells, wherein a pixel cell of the plurality of pixels cells includes a photosensitive region buried at least in part within a substrate such that the photosensitive region is separate from a strained silicon layer by an intermediary portion of the substrate.
Dependencies are inferred from the claim text.