液晶与显示2025，Vol.40Issue(3)：431-438,8.DOI:10.37188/CJLCD.2024-0275
光学膜对LED背光光色变化的影响
Influence of optical film on the color change of LED backlight
摘要
Abstract
Mini LED backlight display products use optical diffusion plates and composite films to improve brightness and uniformity.The test results of this paper show that the brightness gain of composite films ranges from 1.5 to 2 times,with the order of brightness gain being POP>DPP>MOP>DOP.This is due to the correction effect of different composite films on the beam solid angle.At the same time,the composite film raised the backlight color coordinates,with the change in the diffusion plate+DPP color coordinates being Δx of 0.01 and Δy of 0.018 7.Analysis shows that the significant loss of short wavelength blue light radiation energy is caused by Mie scattering of diffusing particles.The blue light reflected back from the multi-layer optical microstructure of the composite film to the quantum film will generate multiple photoexcitation phenomena,further increasing the amplification of the xy color coordinate values of the quantum dot model by the composite film.The color coordinate changes generated by the optical composite film are beneficial for adjusting the color temperature of the display product to a lower color temperature from the factory to ensure display brightness.关键词
次微发光二极管/光学膜/散射/折反射/颜色坐标Key words
mini LED/optical film/scattering/refractive reflection/color coordinates分类
电子信息工程引用本文复制引用
钟文馗,林伟瀚,杨梅慧,胡文党,谢沛川..光学膜对LED背光光色变化的影响[J].液晶与显示,2025,40(3):431-438,8.基金项目
深圳市科技创新委员会项目(No.JSGG20201201100401003) Supported by Shenzhen Science and Technology Innovation Committee Project(No.JSGG20201201100401003) （No.JSGG20201201100401003）
