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US 2008/0173965 A1Published application
Method and structure to reduce optical crosstalk in a solid state imager
AssigneeMicron Technology, Inc.
InventorBryan G. Cole
Life of this patent
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Abstract
Methods and structures to reduce optical crosstalk in solid state imager arrays. Sections of pixel material layers that previously would have been etched away and disposed of as waste during fabrication are left as conserved sections. These conserved sections are used to amend the properties and performance of the imager array. In the resulting structure, the conserved sections absorb incident light. The patterned portions of conserved material provide additional light shielding for array pixels.
Claims2
An imager pixel comprising:
- a substrate;
- a photoactive region having an admitting face and supported by the substrate, and arranged to transduce light incident the admitting face;
- pixel circuit structure in a first section of a fabrication layer supported by the substrate;
- and
- a light-shielding region in a second section of the fabrication layer arranged adjacent and outside the photoactive region and configured to absorb light incident the imager pixel outside the photoactive region and the first section.
2 more elements
2-49. (canceled)
Dependencies are inferred from the claim text.