The present application claims the priority of the Chinese Patent Application No. 201811012584.9 filed on Aug. 31, 2018, which is incorporated herein by reference as a part of the present application.

TECHNICAL FIELD

The embodiment of the present disclosure relates to a field of display technology, in particular relates to a quantum dot film, a quantum dot light-emitting assembly and a display device.

BACKGROUND

With rapid development of display technology, quantum dots (QDs) have attracted attentions of researchers due to their excellent size property and luminescence property. Traditional quantum dot film sheets have defects of low excitation efficiency, low brightness and low luminescence intensity.

SUMMARY

Embodiments of the present disclosure provide a quantum dot film, a quantum dot light-emitting assembly and a display device.

At least one embodiment of the present disclosure provides a quantum dot film, and the quantum dot film comprises: a quantum dot layer; and a conductive layer, which is arranged on at least a side of the quantum dot layer along a thickness direction; the conductive layer comprises nano-sized metal particles, and at least a portion of the nano-sized metal particles are configured to generate a surface plasmon resonance under electromagnetic radiation.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the quantum dot layer comprises quantum dots, and a distance between the quantum dot layer and the conductive layer along the thickness direction of the quantum dot layer is configured to enable a portion of the quantum dots to be located in a resonance electromagnetic field generated by the surface plasmon resonance.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the conductive layer is located on a light-entering side of the quantum dot layer.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the quantum dot film comprises two conductive layers, and the two conductive layers are arranged on a light-exiting side and a light-entering side of the quantum dot layer respectively.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the quantum dot film further comprises an isolation layer, and the isolation layer is located between at least a portion of the conductive layer and at least a portion of the quantum dot layer.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the quantum dot layer comprises quantum dot sub-layers configured to excite light of different colors; and distances between each of the quantum dot sub-layers and the conductive layer are different from each other.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, quantum dot sub-layers are located at a same layer; the conductive layer comprises conductive parts having a one-to-one correspondence with quantum dot sub-layers; and distances between each of quantum dot sub-layers and its corresponding conductive part are different from each other.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the isolation layer comprises isolation parts; each of the isolation parts is between one of quantum dot sub-layers and the conductive layer, and thicknesses of isolation parts are different from each other.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the isolation layer is made of a transparent insulating material.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the isolation layer is located on all surfaces of the conductive layer and the quantum dot layer facing each other.

For example, in a quantum dot film provided by at least one embodiment of the present disclosure, the isolation layer is located on a part of surfaces of the conductive layer and the quantum dot layer facing each other.

At least one embodiment of the present disclosure further provides a quantum dot light-emitting assembly, and the quantum dot light-emitting assembly comprises a backlight source, and the quantum dot film mentioned above, in which light emitted by the backlight source illuminates the quantum dot film and makes the quantum dot film emit light.

For example, in a quantum dot light-emitting assembly provided by at least one embodiment of the present disclosure, the conductive layer is located on a side of the quantum dot layer close to the backlight source, and the light emitted by the backlight source is incident on the quantum dot layer via the conductive layer.

For example, in a quantum dot light-emitting assembly provided by at least one embodiment of the present disclosure, the quantum dot layer comprises at least two quantum dot sub-layers, and a first color light emitted by the backlight source illuminates the at least two quantum dot sub-layers; the at least two quantum dot sub-layers are located abreast on a side of the conductive layer away from the backlight source; and the at least two quantum dot sub-layers are configured to emit a second color light and a third color light respectively upon being illuminated by the first color light.

At least one embodiment of the present disclosure further provides a display device, and the display device comprises any one of the quantum dot films mentioned above.

For example, a display device provided by at least one embodiment of the present disclosure comprises a color filter layer, and the at least one quantum dot film comprises a first quantum dot film, and the first quantum dot film is used as the color filter layer and is configured to emit light upon being illuminated.

For example, in a display device provided by at least one embodiment of the present disclosure, the first quantum dot film comprises a first quantum dot layer; the first quantum dot layer comprises first quantum dot sub-layers; and a black matrix is arranged in gaps between the first quantum dot sub-layers.

For example, in a display device provided by at least one embodiment of the present disclosure, the display device comprises a backlight source, and the at least one quantum dot film comprises a second quantum dot film, the second quantum dot film is located at a light-exiting side of the backlight source and is configured to emit light upon being illuminated by light from the backlight source.

For example, in a display device provided by at least one embodiment of the present disclosure, the display device comprises a color filter layer and an electroluminescent layer, and the at least one quantum dot film comprises a first quantum dot film, a second quantum dot film and a third quantum dot film; the third quantum dot film is used as the electroluminescent layer and is configured to generate under an electric field a first color light which illuminates the first quantum dot film and the second quantum dot film; the first quantum dot film and the second quantum dot film are used as the color filter layer and are configured to emit a second color light and a third color light respectively upon being illuminated by the first color light.

For example, in a display device provided by at least one embodiment of the present disclosure, the display device comprises a quantum dot light-emitting diode, and the quantum dot light-emitting diode comprises a quantum dot light-emitting layer, and the at least one quantum dot film is used as the quantum dot light-emitting layer and is configured to emit light under an electric field.

