Quantum dot display panel, preparation method thereof and display device

Abstract

The embodiment of the invention discloses a quantum dot display panel, a preparation method thereof and a display device. The display panel comprises a backlight module, a quantum dot color film structure positioned on one side of the light emitting surface of the backlight module, a first reflecting layer, and a second reflecting layer. The quantum dot color film structure at least comprises a red light quantum dot color film unit, a green light quantum dot color film unit and a composite quantum dot color film unit. The composite quantum dot color film unit at least comprises red light quantum dots and green light quantum dots. The red light quantum dot color film unit and the green light quantum dot color film unit are arranged in a laminated mode, the red light quantum dot color film unit is located on the side close to the backlight module, and every two of the red light quantum dot color film unit, the green light quantum dot color film unit and the composite quantum dot color film unit do not overlap. The first reflecting layer is arranged on one side, deviating from the backlight module, of the quantum dot color film structure; and the second reflecting layer is arranged on one side, deviating from the quantum dot color film structure, of the backlight module. According to the technical scheme, the luminous efficiency and the display brightness of the display panel are improved.

Description

technical field [0001] Embodiments of the present invention relate to display technologies, and in particular to a quantum dot display panel, a manufacturing method thereof, and a display device. Background technique [0002] The particle size of quantum dot (Quantum Dot, QD) materials is generally between 1 and 10nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure, so the luminescence spectrum is very narrow (20 -30nm), high chroma purity, and wide display color gamut; due to its special characteristics, quantum dots, as a new generation of luminescent materials, are gradually emerging in display applications. Quantum dot materials can effectively improve the color gamut of the display screen by absorbing part of the blue light and excite part of the band of green and red light to meet the needs of high-quality display applications. [0003] Quantum dot color film is a key component for display ...

AI Technical Summary

Problems solved by technology

In the prior art, the quantum dot color film technology usually mixes red and green quantum dot materials together to form a quantum dot color conversion film. After the blue backlight in the display panel passes through the display module and the quantum dot color conversion film, The red, green and remaining blue light converted by the quantum dot color conversion film need to be filtered through a color filter, so that each pixel will filter out the other two colors of light, resulting in a change in the efficiency of light emitted by the pixel. Low

In addition, mixing red and green quantum dots directly will cause the red quantum dots to reabsorb the light emitted by the green quantum dots, further reducing the overall luminous efficiency of the display panel.

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