Jiang Mouhua, Yi Zichuan, Wang Jiashuai, Li Feng, Lai Boyuan, Li Liangyu, Wang Li, Liu Liming, Chi Feng, Zhou Guofu
School of Electronic Information, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China.
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
Micromachines (Basel). 2024 Oct 15;15(10):1260. doi: 10.3390/mi15101260.
Three-color electrophoretic display (EPD) is emerging as a display technology due to its extremely low energy consumption and excellent reflective properties. However, in the process of black and white color image transition, due to the different driving characteristics of red particles, the particles within the three-color EPD cannot be ideally driven to the target position, resulting in the appearance of a red ghost image. For this reason, this study utilized the COMSOL 5.6 finite element simulation method to construct a three-dimensional simulation model to explore the motion characteristics of electrophoretic particles, and then proposed a new driving scheme. The driving scheme aimed to drive red particles to the target position and eliminate the red ghost image by optimizing the pixel erasing stage and employing a high-frequency oscillating voltage. The final experimental results showed that after adopting the proposed driving scheme, the red ghost image was reduced by 8.57% and the brightness of the white color image was increased by 17.50%. This method effectively improved the display performance of three-color EPDs and contributed to the better application of three-color EPDs in the field of high-reflectivity and high-quality display.
三色电泳显示器（EPD）因其极低的能耗和出色的反射特性而成为一种显示技术。然而，在黑白图像转换过程中，由于红色粒子的驱动特性不同，三色EPD内的粒子无法理想地驱动到目标位置，导致出现红色重影。因此，本研究利用COMSOL 5.6有限元模拟方法构建三维模拟模型，以探索电泳粒子的运动特性，进而提出一种新的驱动方案。该驱动方案旨在通过优化像素擦除阶段并采用高频振荡电压，将红色粒子驱动到目标位置并消除红色重影。最终实验结果表明，采用所提出的驱动方案后，红色重影减少了8.57%，白色图像亮度提高了17.50%。该方法有效提高了三色EPD的显示性能，有助于三色EPD在高反射率和高质量显示领域的更好应用。
