Patent ID: 8858885

Claim:
A pixel-type biological analysis device comprising: a photosensitive layer; a capture mixture configured to capture targeted proteins, the capture mixture being positioned on an external surface of the photosensitive layer and including a hydrogel and a protein probe grafted to the hydrogel; a photoelectron collector in the photosensitive layer and configured to collect photoelectrons and provide an electrical quantity, wherein the photoelectron collector comprises: a first portion configured to detect an incident luminous intensity coming from the capture mixture and supply a first electrical quantity; and a second portion configured to supply a second electrical quantity and protected against all sources of luminous intensity, including the incident luminous intensity coming from the capture mixture; and read circuitry configured to read the electrical quantity and supply a read signal characteristic of a luminous intensity detected by the photosensitive layer, wherein the read circuitry includes an amplifier having a first input coupled to the first portion and a second input coupled to the second portion, the amplifier being configured to supply a read signal based on the first and second electrical quantities, the read signal being characteristic of the incident luminous intensity detected by the first portion.