Organic light-emitting diode display panel and display device having substrate through holes

1. An organic light-emitting diode (OLED) display panel, comprising:

a substrate;

a driving circuit layer formed on a side of the substrate;

a light-emitting material layer formed on a side of the driving circuit layer away from the substrate; and

a sensing unit disposed on another side of the substrate away from the driving circuit layer and configured to receive light reflected by a fingerprint surface;

wherein in a fingerprint identifying region of the OLED display panel, the substrate comprises a through hole, and the light emitted from the light-emitting material layer and the light reflected by the fingerprint surface travels through the through hole and arrivals the sensing unit;

wherein in the fingerprint identifying region, the driving circuit layer is unpatterned;

wherein in the fingerprint identifying region, the substrate comprises a plurality of first through holes that are not in contact with each other; and

wherein in the fingerprint identifying region, the substrate comprises a central region and a peripheral region, and the peripheral region surrounds the central region, and a density of the first through holes in the central region is greater than a density of the first through holes in the peripheral region.

2. The OLED display panel as claimed in claim 1 , wherein the OLED display panel further comprises a protection layer disposed on the another side of the substrate away from the driving circuit layer, and in the fingerprint identification region, the protection layer comprises a plurality of second through holes which are in one-to-one correspondence with the first through holes.

3. An organic light-emitting diode (OLED) display panel, comprising:

a substrate;

a driving circuit layer formed on a side of the substrate;

a light-emitting material layer formed on a side of the driving circuit layer away from the substrate; and

a sensing unit disposed on another side of the substrate away from the driving circuit layer and configured to receive light reflected by a fingerprint surface;

wherein in a fingerprint identifying region of the OLED display panel, the substrate comprises a through hole, and the light emitted from the light-emitting material layer and the light reflected by the fingerprint surface travels through the through hole and arrivals the sensing unit; and

wherein the driving circuit layer comprises a gate layer, a source and drain layer, and a signal line layer, and in the fingerprint identifying region, the driving circuit layer is patterned to form a fifth through hole, and the substrate comprises a sixth through hole, and the light emitted from the light-emitting material layer and the light reflected by the fingerprint surface travels through the fifth through hole and arrivals the sixth through hole and the sensing unit according to a pinhole imaging theory.

4. The OLED display panel as claimed in claim 3 , wherein the fifth through hole is formed with the gate layer.

5. The OLED display panel as claimed in claim 3 , wherein the gate layer comprises a first gate layer and a second gate layer, and the fifth through hole is formed with the first gate layer.

6. The OLED display panel as claimed in claim 3 , wherein the fifth through hole is formed with the signal line layer.

7. The OLED display panel as claimed in claim 3 , wherein the fifth through hole is formed with the source and drain layer.

8. The OLED display panel as claimed in claim 3 , wherein the OLED display panel further comprises a protection layer disposed on the another side of the substrate away from the driving circuit layer, and in the fingerprint identification region, the protection layer comprises a seventh through hole corresponding to the sixth through hole.

9. A display device comprising an organic light-emitting diode (OLED) display panel, wherein the OLED display panel comprises:

a substrate;

a driving circuit layer formed on a side of the substrate;

a light-emitting material layer formed on a side of the driving circuit layer away from the substrate; and

a sensing unit disposed on another side of the substrate away from the driving circuit layer and configured to receive light reflected by a fingerprint surface;

wherein in a fingerprint identifying region of the OLED display panel, the substrate comprises a through hole, and the light emitted from the light-emitting material layer and the light reflected by the fingerprint surface travels through the through hole and arrivals the sensing unit; and

wherein the driving circuit layer comprises a gate layer, a source and drain layer, and a signal line layer, and in the fingerprint identifying region, the driving circuit layer is patterned to form a fifth through hole, and the substrate comprises a sixth through hole, and the light emitted from the light-emitting material layer and the light reflected by the fingerprint surface travels through the fifth through hole and arrivals the sixth through hole and the sensing unit according to a pinhole imaging theory.

10. The display device as claimed in claim 9 , wherein in the fingerprint identifying region, the driving circuit layer is unpatterned.

11. The display device as claimed in claim 10 , wherein in the fingerprint identifying region, the substrate comprises a plurality of first through holes that are not in contact with each other.

12. The display device as claimed in claim 10 , wherein in the fingerprint identification region, the substrate comprises a third through hole.