Fingerprint identification and detection circuit, method and display device

A fingerprint identification and detection circuit, comprising:

• a storage capacitor;
• a capacitor control circuit;
• and
• a photoelectric conversion element,
• wherein:
• the photoelectric conversion element is configured to, when in a photoelectric conversion state, convert a received optical signal into a corresponding electrical signal;
• the capacitor control circuit is provided between the storage capacitor and the photoelectric conversion element, and is configured to perform control to store at least part of the electrical signal to the storage capacitor under control of a capacitor control signal;
• the capacitor control circuit comprises a first capacitor control transistor and a second capacitor control transistor;
• the capacitor control signal comprises a first capacitor control signal and a second capacitor control signal;
• a control electrode of the first capacitor control transistor is electrically connected to a first capacitor control signal line, a first electrode of the first capacitor control transistor is electrically connected to a first terminal of the storage capacitor, and a second electrode of the first capacitor control transistor is electrically connected to a first electrode of the photoelectric conversion element;
• a control electrode of the second capacitor control transistor is electrically connected to a second capacitor control signal line, a first electrode of the second capacitor control transistor is electrically connected to a second electrode of the photoelectric conversion element, and a second electrode of the second capacitor control transistor is electrically connected to a second terminal of the storage capacitor;
• and
• the first capacitor control signal line is configured to provide the first capacitor control signal, and the second capacitor control signal line is configured to provide the second capacitor control signal.