CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Chinese Patent Application No. 202010984726.9, filed to the China Patent Office on Sep. 18, 2020, the entire contents of which are incorporated herein by reference.

FIELD

The present disclosure relates to the technical field of display, in particular to a display panel and a display apparatus.

BACKGROUND

In recent years, with the rapid development of touch control technologies, mobile products with a biological identification function gradually enter people's life and work, and the fingerprint identification technology has attracted people's attention by virtue of its unique identity characteristics. Press-type and slide-type fingerprint identification technologies based on a silicon-based technology have been integrated into the mobile products, and the fingerprint identification technology in a display area will be focused by people in the future.

SUMMARY

The embodiments of the present disclosure provide a display panel. The specific scheme is as follows.

The embodiments of the present disclosure provide the display panel, including: a base substrate, a plurality of light emitting devices and a plurality of light sensors disposed on the base substrate, thin film transistor structures disposed between the base substrate and the plurality of light emitting devices, a pixel definition layer configured to define the positions of the plurality of light emitting devices, and a first planarization layer disposed on a side, facing the base substrate, of the pixel definition layer; a light shading layer and reflection parts each corresponding to a respective one of the light sensors.

The plurality of light emitting devices are electrically connected with the thin film transistor structures; the reflection parts are disposed on sides, facing the base substrate, of the corresponding light sensors, and a side, facing the respective one reflection part, of the each light sensor is the light inlet side of the each light sensor; light-transmitting regions each corresponding to a respective one of the light sensors are disposed in the light shading layer, and an orthographic projection of the each light-transmitting region on the base substrate is not overlapped with an orthographic projection of the respective one light sensor on the base substrate; the light shading layer is disposed on a side, facing away from the base substrate, of the thin film transistor structures, and at least an overlapping area exists between an orthographic projection of the light shading layer on the base substrate and orthographic projections of the light sensors on the base substrate.

Optionally, each of the light sensors includes a first electrode, a photoelectric conversion layer and a second electrode stacked sequentially; a material of the first electrode is a transparent conductive material; and the first electrode is disposed between the photoelectric conversion layer and the base substrate.

Each of the light emitting devices includes an anode, a light emitting layer and a cathode layer; the anode, the light emitting layer and the cathode layer are stacked, and the anode is disposed between the light emitting layer and the base substrate.

Optionally, the light shading layer is disposed between the pixel definition layer and the thin film transistor structures; or the light shading layer is reused as the pixel definition layer; and the light sensors are disposed between the light shading layer and the reflection parts; or the light sensors penetrate through the light shading layer in a direction perpendicular to the base substrate.

Optionally, the light shading layer is disposed between the thin film transistor structures and the plurality of light emitting devices, and the light shading layer is reused as the first planarization layer; and the plurality of light emitting devices and the thin film transistor structures are electrically connected through via holes penetrating through the first planarization layer.

Optionally, a layer where the second electrode of the light sensor is located is same as a layer where the anode of the plurality of light emitting device is located, and a material of the second electrode is same as a material of the anode.

Optionally, the display panel further includes: a second planarization layer disposed between the first planarization layer and the thin film transistor structures, and a connection electrode disposed between the second planarization layer and the first planarization layer; and the plurality of light emitting devices are electrically connected with the thin film transistor structures through the connection electrode.

Optionally, a layer where the first electrode or the second electrode of the light sensor is located is same as a layer where the connection electrode is located, and a material of the first electrode or a material of the second electrode is same as a material of the connection electrode.

Optionally, the layer where the first electrode of the light sensor is located is same as the layer where the connection electrode is located, and the material of the first electrode is same as the material of the connection electrode; and the layer where the second electrode of the light sensor is located is same as the layer where the anode of the light emitting device is located, and the material of second electrode is same as the material of the anode.

Optionally, the layer where the second electrode of the light sensor is located is same as the layer where the connection electrode is located, and the material of the second electrode is same as the material of the connection electrode; and the layer where the first electrode of the light sensor is located is same as a layer where source and drain electrodes or gate electrodes of the thin film transistor structures are located, and the material of the first electrode is same as a material of the drain electrodes or the gate electrodes of the thin film transistor structures.

Optionally, the light shading layer is reused as the pixel definition layer; a layer where the first electrode of the light sensor is located is same as a layer where a transparent conductive layer in the anode of the light emitting device is located; and the material of the first electrode is same as a material of the transparent conductive layer; and/or, a layer where the second electrode of the light sensos is located is same as a layer where the cathode layer of the light emitting device is located, and the material of the second electrode is same as a material of the cathode layer.

Optionally, the light shading layer includes light shading parts each corresponding to the respective one of the light sensors, and an orthographic projection of the each light shading part on the base substrate covers the orthographic projection of the respective one light sensor on the base substrate; and the each light-transmitting region corresponding to the respective one light sensor surround the light shading part corresponding to the respective one light sensor.

Optionally, the anode includes an anode metal layer, and the anode is reused as the light shading part.

Optionally, the second electrode of the light sensors is a metal electrode, and the second electrode of the light sensor is reused as the light shading part corresponding to the light sensor.

Optionally, the display panel further includes: a light shielding layer disposed between the thin film transistor structures and the base substrate, the light shielding layer configured to shield light rays on the side, facing away from the light shielding layer, of the base substrate from irradiating the thin film transistor structures; and a layer where the reflection parts are located is same as a layer where the light shielding layer is located, and a material of the reflection parts is same as a material of the light shielding layer.

Accordingly, the embodiments of the present disclosure also provides a display apparatus including any display panel described above.

