Quantum dot display substrate, method for making the same, and display device

Abstract

The invention provides a quantum dot display substrate, a manufacturing method thereof, and a display device, belonging to the technical field of display. The quantum dot display substrate includes a black matrix pattern and a plurality of quantum dot light-emitting units. The quantum dot light-emitting units are located in the light-emitting area defined by the black matrix pattern and can emit monochromatic light of different colors. The dot display substrate further includes: reflective blocking walls located between adjacent quantum dot light-emitting units, and the reflectivity of the reflective blocking walls to blue light is greater than a preset threshold. Through the technical solution of the present invention, color mixing caused by false excitation between quantum dot light-emitting units can be prevented, and the utilization rate of blue light can be improved through blue light reflection in the pixel, which can greatly improve the color gamut and contrast of the display device.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a quantum dot display substrate, a manufacturing method thereof, and a display device. Background technique [0002] Quantum Dots (QDs), also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. The particle size of quantum dots is generally between 1 and 20 nm. Due to the quantum confinement of electrons and holes, the continuous energy band structure becomes a discrete energy level structure, which can emit fluorescence after excitation. [0003] Based on quantum effects, quantum dots have broad application prospects in solar cells, light-emitting devices, optical biomarkers and other fields. Quantum dot display substrates can be made from quantum dots, which have the advantages of high color gamut and low power consumption. [0004] A plurality of quantum dot light-emitting units are arranged on the quantum dot display substrate, and the plu...

AI Technical Summary

Problems solved by technology

[0004] There are multiple quantum dot light-emitting units on the quantum dot display substrate, and the multiple quantum dot light-emitting units can emit light of different colors under the excitation of blue light, but the blue light that is not completely absorbed by the quantum dot light-emitting units will excite the adjacent quantum dot light-emitting units Glowing, causing color mixing and color crossing

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