Display apparatus and fingerprint identification method

A display apparatus, comprising:

• a display region including a fingerprint identification region and a non-display region surrounding the display region;
• a plurality of fingerprint identification pixels, disposed in the fingerprint identification region and configured to provide fingerprint identification light;
• a fingerprint identification array including a plurality of fingerprint sensing units, disposed in the fingerprint identification region and configured to receive the fingerprint identification light after being reflected by a touching body;
• and
• a controller electrically connected to the plurality of fingerprint sensing units, wherein the controller is configured to:
• obtain a whole image of a to-be-identified fingerprint, according to the whole image, determine a position coordinate of at least one characteristic point of the to-be-identified fingerprint on the display apparatus, according to the position coordinate, control a first number of the plurality of fingerprint identification pixels to emit light to obtain a local image at the at least one characteristic point of the to-be-identified fingerprint, and identify the to-be-identified fingerprint according to the local image, wherein the first number of the plurality of fingerprint identification pixels is smaller than a total number of the plurality of fingerprint identification pixels;
• wherein:
• when the controller is configured to obtain a whole image of a to-be-identified fingerprint, the controller is further configured to:
• control all the fingerprint identification pixels in the fingerprint identification region to emit light:
• the local image is obtained after the whole image is obtained;
• and
• the first number of the plurality of fingerprint identification pixels are located in an area with a preset threshold radius around the position coordinates of the at least one characteristic point of the to-be-identified fingerprint on the display apparatus.