Display panel and display device

A display device, comprising a fingerprint identification driving circuit and a display panel, wherein

• the display panel comprises a display substrate, a diffusion sheet, a transflective film, a fingerprint identification circuit, and a fixed frame, wherein the diffusion sheet, the transflective film, and the fingerprint identification circuit are disposed on a side of the display substrate and are sequentially stacked and the fixed frame is disposed on one side of the transflective film distal from the display substrate;
• wherein the display substrate has a display area, an orthographic projection of the fingerprint identification circuit onto the display substrate is within the display area, and the fingerprint identification circuit is configured to emit light of a target wavelength, and to perform fingerprint identification according to received light of the target wavelength reflected by an obstacle;
• the transflective film is configured to transmit the light of the target wavelength and reflect light other than the light of the target wavelength;
• and
• the diffusion sheet is provided with a plurality of through holes, and an orthographic projection of the plurality of through holes onto the display substrate is within the orthographic projection of the fingerprint identification circuit onto the display substrate, an aperture of each of the plurality of through holes is ranged from 50 μm to 100 μm, and the number of the plurality of through holes provided in the diffusion sheet is ranged from 50 to 100;
• wherein the fingerprint identification circuit comprises a first light-emitting element, a fingerprint identification sensor, and a supporting plate, wherein the first light-emitting element is configured to emit the light of the target wavelength;
• the fingerprint identification sensor is configured to perform fingerprint identification according to the received light reflected by the obstacle;
• the fingerprint identification sensor and the first light-emitting element are fixedly arranged on the supporting plate;
• and the fixed frame is provided with a second opening, orthographic projections of the first light-emitting element and the supporting plate on the display substrate falling within an orthographic projection of the second opening on the display substrate;
• and
• the fingerprint identification driving circuit is connected to a fingerprint identification circuit in the display panel and configured to provide a driving signal for the fingerprint identification circuit.