Display panel, display device and driving method

A driving method of a display panel, wherein the display panel comprises:

• a fingerprint recognition module, a light-shielding layer on the fingerprint recognition module, a light-emitting element layer located on the light-shielding layer, and a touch functional layer located on the light-emitting element layer, wherein the light-shielding layer comprises a plurality of imaging apertures, the light-emitting element layer comprises a plurality of light-emitting elements, and each of plurality of imaging apertures corresponds to a plurality of first light-emitting elements and a plurality of second light-emitting elements among the plurality of light-emitting elements, wherein a distance between an orthographic projection of the first light-emitting element on a plane of the light-shielding layer and the corresponding imaging aperture is greater than a distance between an orthographic projection of the second light-emitting element on the plane of the light-shielding layer and the corresponding imaging aperture;
• the driving method comprises:
• in a first detection stage, controlling the plurality of first light-emitting elements to emit light and controlling the plurality of second light-emitting elements not to emit light, and acquiring a first fingerprint image by the fingerprint identification recognition;
• in a second detection stage, controlling the plurality of second light-emitting elements to emit light, and acquiring a second fingerprint image the fingerprint recognition module;
• and
• combining the first fingerprint image and the second fingerprint image into a fingerprint image;
• wherein the distance d between the orthographic projection of the second light-emitting element on the plane of the light-shielding layer and the corresponding imaging aperture satisfies:
• d
• ≥
• ph
• 2
• u
• 2
• ,
• wherein, p denotes a distance between center points of any two adjacent ones of the plurality of imaging apertures, h denotes a vertical distance between the touch functional layer and the light-shielding layer, and u denotes a vertical distance between a touch surface of the display panel and the light-shielding layer.

A display device, comprising:

• a display panel, wherein the display panel comprises:
• a fingerprint recognition module;
• a light-shielding layer on the fingerprint recognition module;
• a light-emitting element layer located on the light-shielding layer;
• and
• a touch functional layer located on the light-emitting element layer;
• wherein the light-shielding layer comprises a plurality of imaging apertures, the light-emitting element layer comprises a plurality of light-emitting elements, and the plurality of light-emitting elements comprise a plurality of first light-emitting elements and a plurality of second light-emitting elements;
• wherein a distance between an orthographic projection of the first light-emitting element on a plane of the light-shielding layer and the corresponding imaging aperture is greater than a distance between an orthographic projection of the second light-emitting element on the plane of the light-shielding layer and the corresponding imaging aperture;
• wherein in a first detection stage, the plurality of first light-emitting elements emit light, the plurality of second light-emitting elements do not emit light, and the fingerprint recognition module generates a first fingerprint image;
• and
• wherein in a second detection stage, the plurality of second light-emitting elements emit light, and the fingerprint recognition module generates a second fingerprint image;
• wherein the first fingerprint image and the second fingerprint image are combined into a fingerprint image;
• wherein the distance d between the orthographic projection of the second light-emitting element on the plane of the light-shielding layer is and the corresponding imaging aperture satisfies:
• d
• ≥
• ph
• 2
• u
• 2
• ,
• wherein, p denotes a distance between center points of any two adjacent ones of the plurality of imaging apertures, h denotes a vertical distance between the touch functional layer and the light-shielding layer, and u denotes a vertical distance between a touch surface of the display panel and the light-shielding layer.