Quantum structure light emitting module

Abstract

A quantum structure light emitting module includes a quantum structure thin film and a light emitting unit. The quantum structure thin film includes a first substrate and a second substrate spaced apart from each other, and an excitation layer positioned between the first substrate and the second substrate and including a plurality of quantum structures. The light emitting unit is located on one side of the quantum structure thin film and includes a first light emitting member for emitting blue light and exciting the quantum structure to generate green light, and a second light emitting memberfor emitting red light. The red light, the blue light and the green light are mixed to form white light which is emitted from the second substrate. The module can help increase the intensity of a redlight component, so as to increase the color gamut of the display screen and make the color saturated. Also, since only green light is produced by exciting the quantum structure through light while red light is not generated in this manner, the amount of quantum structure usage can be reduced, and use of cadmium materials can be decreased.

Description

technical field [0001] The invention relates to a light-emitting module, in particular to a light-emitting module containing a quantum structure film capable of being excited by light to emit light. Background technique [0002] It is known that one of the methods for generating white light from a light emitting diode (LED) light-emitting device is to use a thin film containing quantum dots (Quantum Dot) as the light-emitting layer of the light-emitting diode, and the quantum dots of different materials or particle sizes are excited. The light source is irradiated, and it is obtained by mixing light after emitting secondary light with a wavelength different from that of the exciting light source. For example, a blue LED can be used as an excitation light source, and quantum dot materials with different particle sizes can be excited to generate red light and green light, so that red light, green light and blue light can be mixed to form white light. [0003] The above-mentio...

AI Technical Summary

Problems solved by technology

At present, there are also quantum dot materials using CsPbX 3 , X is chlorine, bromine, iodine or any combination of the above, by adjusting the ratio of chlorine, bromine, iodine and the size of the quantum dots, the color of the excited light of the quantum dots can be changed, one of which is to use a blue LED to excite CsPbX 3 Quantum dots are used to obtain red and green light. However, in practice, it is found that the red light obtained in this way is not enough, which affects the color quality of the display screen. The color performance is not as good as that of the display screen using cadmium-containing quantum dot materials. While the amount of cadmium is used, it is also necessary to consider how to take into account the color performance and imaging requirements

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