Microfluidic device and detection method thereof

A microfluidic device, comprising:

• a first substrate and a second substrate that are disposed oppositely,
• and a microfluidic channel layer arranged between the first substrate and the second substrate,
• wherein the first substrate comprises a light source layer, the light source layer comprises a plurality of light source structures, the light source structure comprises a first electrode, a second electrode, and an electroluminescence module arranged between the first electrode and the second electrode, and in a case where the light source structure is turned on, the light source structure is configured to emit light passing through the microfluidic channel layer and irradiating the second substrate;
• the second substrate comprises a photoelectric detection layer and a driving electrode layer, the photoelectric detection layer comprises a plurality of photoelectric detection structures, the photoelectric detection structure comprises a third electrode, a fourth electrode, and a photoelectric conversion module arranged between the third electrode and the fourth electrode, and the photoelectric detection structure generates an electrical signal according to an incident light signal in a case where the photoelectric detection structure is turned on;
• and
• the driving electrode layer comprises a plurality of driving electrodes and a plurality of driving circuits, and the driving circuit is configured to apply a voltage to the driving electrode such that a droplet moves in a microfluidic channel of the microfluidic channel layer.