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US 8,013,411 B2Granted
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.
Claims13
A pixel comprising:
- a substrate;
- a photosensitive region;
- pixel circuitry for detecting the amount of light incident on the photosensitive region;
- and
- a first film of a first material, the film being, substantially planar and patterned to comprise a first section and a second section, wherein the pixel circuitry comprises the first section, and wherein the second section is electrically isolated from and not connected to the pixel circuitry.
2 more elements
A pixel comprising:
- a substrate;
- and
- a film of semiconductor material over the substrate, the film comprising a first section and a second section, the first section of the film comprising circuitry for detecting electromagnetic radiation, and the second section of the film being electrically isolated from and not connected to the circuitry,
- wherein the first section and second section are on the same horizontal plane.
1 more element
Dependencies are inferred from the claim text.