Photoelectric detection circuit and driving method therefor, and detection substrate and ray detector

A detection substrate, comprising:

• a base substrate;
• photoelectric detection circuits arranged on the base substrate in an array;
• and
• photoelectric sensors arranged on sides, facing away from the base substrate, of the photoelectric detection circuits and coupled with the photoelectric detection circuits in a one-to-one correspondence mode;
• wherein the photoelectric detection circuit comprises:
• a storage circuit, coupled with an output end of a photoelectric sensor;
• wherein the storage circuit is configured to store a first photocurrent signal generated by the photoelectric sensor according to a received ray with a first radiation dosage, and store a second photocurrent signal generated by the photoelectric sensor according to a received ray with a second radiation dosage, and the first radiation dosage of the ray is smaller than the second radiation dosage of the ray;
• an amplification circuit, coupled with the storage circuit;
• wherein the amplification circuit is configured to amplify and then output the first photocurrent signal written;
• a first reading circuit, coupled with an output end of the amplification circuit and a detection signal receiving end respectively;
• wherein the first reading circuit is configured to write, under a control of a first scanning signal end, the first photocurrent signal amplified by the amplification circuit into the detection signal receiving end;
• and
• a second reading circuit, coupled with the storage circuit and the detection signal receiving end receptively;
• wherein the second reading circuit is configured to write, under a control of a second scanning signal end, the second photocurrent signal into the detection signal receiving end;
• wherein each of the photoelectric sensors comprises:
• a first electrode coupled with a corresponding photoelectric detection circuit;
• a second electrode arranged on the same layer as the first electrode;
• a dielectric layer arranged on a side, facing away from the base substrate, of the layer where the first electrode and the second electrode are arranged;
• and a semiconductor layer arranged on a side, facing away from the base substrate, of the dielectric layer;
• wherein the first electrode and the second electrode constitute an interdigital electrode.