Patent ID: 11895417
Assignee: STMICROELECTRONICS FRANCE
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 20:
21. An image sensor comprising:
an array of pixels arranged inside and on top of a region of a semiconductor substrate electrically insulated from a remainder of the substrate by insulating trenches crossing the substrate, wherein each pixel comprises a photoconversion area and at least two assemblies, wherein each assembly comprises a memory area and a transfer gate coupling the memory area to the photoconversion area;
a first circuit configured to apply, for each pixel and at least during each integration phase, a first bias voltage different from a ground potential to a portion of the substrate having the pixel arranged inside and on top of it, the first bias voltage being in a range of 0.1 V to 1.5 V; and
a second circuit, configured to generate, from a power supply voltage, the first bias voltage.