Patent ID: 9257600
Filing Date: 2016-02-09
CPC Classification: C09K,H01L,Y02B

Claim Text:
1. A white light quantum dot complex particle, comprising a seed particle in a core, and a first shell layer, a second shell layer and a third shell layer wrapped around the seed particle in order, wherein in the first shell layer, the second shell layer and the third shell layer are respectively one of a red light quantum dot layer, a green light quantum dot layer and a blue light quantum dot layer, and are different from one another; wherein the seed particle has a particle size of 10-500 nm, and a range of a thickness of the first shell layer, the second shell layer and the third shell layer is 5-50 nm; a ratio of amounts of the red light, green light and blue light quantum dots in the complex particle is 0.5˜0.8: 1:1.2˜1.5; the red light quantum dots comprise CdSe quantum dots with an emission wavelength of 600˜700 nm; the green light quantum dots comprise CdSe quantum dots with an emission wavelength of 490˜570 nm; and the blue light quantum dots comprise CdSe quantum dots with an emission wavelength of 430˜460 nm.