Fingerprint identification substrate and manufacturing method therefor, identification method and display apparatus

A fingerprint identification substrate, comprising a substrate, and a plurality of scanning signal lines, a plurality of data signal lines and at least two kinds of identification pixels disposed on the substrate, the at least two kinds of identification pixels comprising a first identification pixel and a second identification pixel, and the first identification pixel comprising a first photodiode and the second identification pixel comprising a second photodiode, wherein:

• the first photodiode comprises a first electrode, a first photoelectric conversion layer and a second electrode, and the second photodiode comprises the first electrode, a second photoelectric conversion layer and the second electrode;
• and
• the first photoelectric conversion layer and the second photoelectric conversion layer have different spectral response characteristics to red light or infrared light to enlarge sensitivity difference of each region in a fingerprint image to dynamic changes of a fingerprint;
• wherein the fingerprint identification substrate further comprises:
• an integrated circuit connected with the scanning signal lines and the data signal lines, and the integrated circuit is configured to:
• determine a dynamic sensitive region and a non-dynamic sensitive region in a fingerprint image, a spectral response of the dynamic sensitive region to red light or infrared light being greater than a spectral response of the non-dynamic sensitive region to the red light or the infrared light;
• collect two or more fingerprint images;
• detected whether a grayscale fluctuation between a subsequent collected fingerprint image and a previous collected fingerprint image in the dynamic sensitive region satisfies a preset grayscale fluctuation condition;
• determine that the collected fingerprint image is a fingerprint image of a real finger when the preset grayscale fluctuation condition is satisfied;
• and
• determine that the collected fingerprint image is a fingerprint image of a fake finger when the preset grayscale fluctuation condition is not satisfied.