Fingerprint identification apparatus and electronic device

An electronic device, comprising:

• a display screen;
• and
• a fingerprint identification apparatus which is disposed under the display screen to implement under-screen optical fingerprint detection, wherein the fingerprint identification apparatus comprises:
• a micro lens array disposed below the display screen;
• at least one light shielding layer disposed below the micro lens array, wherein each light shielding layer in the at least one light shielding layer is provided with an array of small holes;
• a pixel unit array disposed below an array of small holes of a bottom light shielding layer in the at least one light shielding layer, so that a light signal returned from a finger above the display screen is transmitted to the pixel unit array through the array of small holes provided in the at least one light shielding layer after being converged by the micro lens array;
• and
• an array of filter unit groups, wherein each filter unit group in the array of filter unit groups comprises at least two filter units, and the at least two filter units are configured to transmit light signals in at least two colors respectively,
• wherein the pixel unit array comprises a pixel unit group corresponding to the filter unit group, at least two pixel units in the pixel unit group receive a first light signal through the at least two filter units respectively, the first light signal is used to detect whether the finger is a real finger, and a pixel unit except the at least two pixel units in the pixel unit group receives a second light signal through a transparent region between the at least two filter units, or a pixel unit between pixel unit groups receives the second light signal through a transparent region between the filter unit groups, and the second light signal is used to identify fingerprint information of the finger.