Image sensor structures and related methods

US12264361B2 · kind B2 · utility

Assignees

• Illumina, Inc. · US
• Illumina Cambridge Limited · GB

Inventors

• Lewis J. Kraft · San Diego, US
• Craig Hetherington · Berkeley, US
• Craig Ciesla · Mountain View, US
• Michael BUREK · Ann Arbor, US
• Jeffrey S. Fisher · San Francisco, US
• Jason Richard Betley · Stowmarket, GB

Key dates

• Filing date: Dec 9, 2021
• Grant date: Apr 1, 2025
• Expiry date: Jan 25, 2044

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/6454
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An image sensor structure includes an image layer having an array of light detectors disposed therein. A device stack is disposed over the image layer. An array of light guides is disposed in the device stack. Each light guide is associated with a light detector. An array of nanowells is disposed over the device stack. Each nanowell is associated with a first light guide of the array of light guides. A first primer set is disposed throughout a first well region of each nanowell. A second primer set is disposed throughout a second well region of each nanowell. The second well region is adjacent the first well region. The first and second primer sets are operable to attach a forward strand cluster of forward polynucleotide strands in the first well region and a reverse strand cluster of reverse polynucleotide strands in the second well region.