Light-emitting method utilizing quantum dots to obtain white light spectrum and light-emitting device thereof

Abstract

The invention relates to the technical field of liquid crystal display, in particular to a light-emitting method utilizing quantum dots to obtain a white light spectrum and a light-emitting device thereof. The light-emitting method comprises the following steps that blue light emitted by a blue-light LED light-emitting lamp (1) passes through red-light quantum points (2), and then red light (R) is emitted, and green light (G) is emitted by green-light quantum points (3); the blue light (B) passes through yellow-light fluorescent powder (4), and then second mixed yellow light (Y2) is emitted; after the red light (R), the green light (G) and the blue light (B) are mixed, first mixed white light (W1) is obtained, and second mixed white light (W2) is obtained after the blue light (B) and the second mixed yellow light (Y2) are mixed; the stable white light spectrum (W) is obtained after the first mixed white light (W1) and the second mixed white light (W2) are mixed. The color gamut is improved to 110%, and instable factors of a quantum dot light source are also made up.

Description

[0001] technical field [0002] The invention relates to the technical field of liquid crystal display, in particular to a light-emitting method and a light-emitting device for obtaining a white light spectrum by using quantum dots. Background technique [0003] Quantum dots are quasi-zero-dimensional nanomaterials composed of a small number of atoms. Roughly speaking, the three dimensions of quantum dots are all below 100 nanometers (nm). confinement effect) is particularly remarkable. [0004] The color gamut of an LCD TV depends on the spectral characteristics of the backlight and how well the spectrum matches the color filter (CF) of the LCD panel. The backlight source only needs white light, and the white light can get any desired color through a filter. If the white light color gamut is high enough, the LCD TV color gamut will also be high. At present, the industry generally adopts the NTSC color gamut standard to measure the color display effect. The higher the c...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a light-emitting method and a light-emitting device using quantum dots to obtain a white light spectrum, which solves the problem that the existing liquid crystal display light-emitting mode uses "blue LED + yellow phosphor" light-emitting mode, the color gamut is not wide enough, and the use of Quantum dots emit light, and are easily affected by the use environment, especially the temperature, resulting in unstable light sources, and the cost of using all quantum dots is very high.

Images