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 first and second substrates, and an excitation layer that is disposed between the first and second substrates, and that includes multiple quantum structures made of materials including CsPbBr3 or CH3NH3PbBr3. The light-emitting unit includes a first light-emitting element emitting a blue light that enters the excitation layer to excite the quantum structures to emit a green light, and a second light-emitting element emitting a red light. The blue,red and green lights are mixed and exit the second substrate. The quantum structure light-emitting module improves the intensity of the red light, thereby improving the gamut of the display screen and saturating the color.

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...

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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 light and green light. However, in practice, it is found that the red light obtained in this way is insufficient, 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. Therefore, in search to CsPbX 3 When the material replaces the Cd-containing quantum dot material, the above-mentioned problem of poor color gamut still needs to be solved

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