Li Zongtao, Qiu Jiayong, Liu Xiujuan, Li Jiasheng
Opt Express. 2024 Aug 12;32(17):29817-29829. doi: 10.1364/OE.531039.
To address challenges in enhancing color uniformity and ambient contrast ratio (ACR) in RGB light-emitting diodes (LEDs) without losing efficiency, we developed a scattering-enhanced magnetic manipulation (SEMM) bilayer structure. The effect of the TiO scattering layer on improving the LED's angular intensity non-uniformity (AIN) was studied by ray-tracing simulations and optimized by varying the particle concentration. The magnetic manipulation technique formed the microcolumns and magnetic chains of the FeO anti-reflective layer, which was optimized by adjusting FeO particle size, magnetic field strength, and FeO concentration. The resulting bilayered device significantly increased the ACR by 11.38 times and reduced AIN by 63% compared to conventional graphite-based LEDs, while maintaining high brightness and consistent color quality across angles. This marks a pioneering application of magnetic manipulation in enhancing LED display quality.
为应对在不损失效率的情况下提高RGB发光二极管（LED）颜色均匀性和环境对比度（ACR）方面的挑战，我们开发了一种散射增强磁操纵（SEMM）双层结构。通过光线追踪模拟研究了TiO散射层对改善LED角强度不均匀性（AIN）的影响，并通过改变颗粒浓度进行了优化。磁操纵技术形成了FeO抗反射层的微柱和磁链，通过调整FeO粒径、磁场强度和FeO浓度对其进行了优化。与传统的基于石墨的LED相比，所得的双层器件显著将ACR提高了11.38倍，并将AIN降低了63%，同时在各个角度保持了高亮度和一致的颜色质量。这标志着磁操纵在提高LED显示质量方面的开创性应用。
