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US 8,937,341 B2Granted
Two-phase charge-coupled device
AssigneeSTMicrelectronics (Crolles 2) SAS
InventorFrançois Roy
Life of this patent
Estimating the term…
Abstract
A charge-coupled unit formed in a semiconductor substrate and including an array of identical electrodes forming rows and columns, wherein: each electrode extends in a cavity with insulated walls formed of a groove, oriented along a row, dug into the substrate thickness, and including, at one of its ends, a protrusion extending towards at least one adjacent row.
Claims17
A two-phase charge transfer device, comprising:
- a semiconductor substrate;
- an array of grooves with insulated walls formed in the substrate, the grooves of the array being arranged in rows and columns extending transversely to each other, the grooves of each column being spaced apart from the grooves of adjacent columns, and the grooves of each row being spaced apart from the grooves of adjacent rows, each groove having, at a first end of the groove, a protrusion extending toward at least one adjacent row of the rows;
- and
- an array of electrodes respectively extending in the grooves, wherein each electrode within a groove of a row of the rows is electrically insulated from adjacent electrodes within the other grooves of the row.
1 more element
An image sensor comprising a charge transfer device configured to receive visible radiation, the charge transfer device including:
- a semiconductor substrate;
- an array of grooves with insulated walls formed in the substrate, the grooves of the array being arranged in rows and columns extending transversely to each other, the grooves of each column being spaced apart from the grooves of adjacent columns and the grooves of each row being spaced apart from the grooves of adjacent rows, each groove having, at a first end of the groove, a protrusion extending toward at least one adjacent row of the rows;
- and
- an array of electrodes respectively extending in the grooves, wherein each, electrode within a groove of a row of the rows is electrically insulated from adjacent electrodes within the other grooves of the row.
1 more element
Dependencies are inferred from the claim text.