Array substrate, display device and pattern recognition method thereof

An array substrate, comprising a pattern recognition layer, a light-shielding layer and a plurality of light-emitting devices, wherein,

• the light-shielding layer and the plurality of light-emitting devices are stacked on the base substrate along a direction away from the base substrate:
• the pattern recognition layer is disposed on a side of the light-shielding layer away from the plurality of light-emitting devices;
• the light-shielding layer is configured to shield at least one of the multi-primary colored lights emitted by the light-emitting devices;
• the light-shielding layer has a plurality of imaging holes located in a display area, and the orthographic projections of the plurality of imaging holes and the plurality of light-emitting devices on a plate surface of the base substrate are independent from each other;
• the pattern recognition layer comprises a plurality of sensor units that are in one-to-one correspondence with the plurality of imaging holes, and the orthographic projections of the plurality of imaging holes on the plate surface of the base substrate are located in the orthographic projections of the plurality of sensor units on the plate surface of the base substrate in a one-to-one correspondence manner.