Quantum dot-based display panel and method for fabricating the same, and display device

A display device, comprising:

• a quantum dot-based display panel, wherein the display panel comprises pixels arranged in an array, at least a portion of the pixels comprises red sub-pixels, green sub-pixels, blue sub-pixels and white sub-pixels, and the quantum dot-based display panel further comprises:
• a substrate;
• a packaging layer provided opposite to the substrate;
• a plurality of light-emitting devices, disposed between the substrate and the packaging layer, and provided at the respective sub-pixels in one-to-one correspondence, wherein the light-emitting devices is configured to emit blue light toward the packaging layer;
• and
• a light conversion layer provided between the light-emitting devices and the packaging layer, wherein the light conversion layer comprises a first red quantum dot layer corresponding to the red sub-pixels, a first green quantum dot layer corresponding to the green sub-pixels, a light transmitting layer corresponding to the blue sub-pixels, and a yellow light conversion layer corresponding to the white sub-pixels;
• wherein the first red quantum dot layer is configured to convert blue light emitted by the light-emitting device of the corresponding sub-pixel to red light, the first green quantum dot layer is configured to convert blue light emitted by the light-emitting device of the corresponding sub-pixel to green light, the light transmitting layer is configured to transmit blue light emitted by the light-emitting device of the corresponding sub-pixel, and the yellow light conversion layer comprises quantum dots and the quantum dots are configured to convert a portion of blue light emitted by the light-emitting device of the corresponding sub-pixel to yellow light, and at the same time transmit the other portion of the blue light, to mix the obtained yellow light and the blue light transmitting through the yellow light conversion layer to form white light.