Patent ID: 7282382

Claim:
A method for producing a photodiode contact for a TFA image sensor with a photodiode by depositing a multi-layer system and a transparent, conductive contact layer on a CMOS-ASIC circuit that has been coated with an intermediate metal dielectric component and that has vias in a pixel grid in a photoactive area, which extend through the intermediate metal dielectric component and are each linked with a respective strip conductor of the CMOS-ASIC circuit, wherein the intermediate metal dielectric component accommodates a barrier layer, which is structured in the pixel grid and carries a CMOS metallization, the method comprising: removing at least the CMOS metallization located on the CMOS-ASIC circuit in the photoactive area up to the barrier layer; and subsequently applying the multi-layer system of the photodiode along with the transparent, conductive contact layer to the CMOS-ASIC circuit.