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

Claim 17:
18. An image sensor comprising:
an array of pixels arranged inside and on top of a region of a first substrate electrically insulated from a remainder of the first substrate by insulating trenches crossing the first 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 readout circuit, configured to selectively receive, during each readout phase, output signals from each row of the array of pixels;
a second circuit, configured to generate, from a power supply voltage, a first bias voltage different from a ground potential, the second circuit being inside and on top of a second substrate, the second substrate being stacked on the first substrate; and
a first circuit, configured to apply, for each pixel and during each integration phase, the first bias voltage to a portion of the first substrate having the pixel arranged inside and on top of it.