针对电磁干扰下LCDs显示异常问题, 基于信号传输完整性理论, 提出提升LCDs抗电磁干扰能力方法, 旨在提升LCDs在复杂电磁环境下的显示质量和电磁兼容性能。首先, 基于信号完整性, 分析电磁干扰下显示异常机理, 分析画面异常原因。其次, 基于自适应信号品质增强模型、信号传输路径优化和LCDs专用复合结构型吸波材料3个方面, 总结LCDs抗电磁干扰性能提升的方案。最后, 基于电磁仿真和产品实测, 验证3种方案改善效果。仿真和实验结果表明: 本文所述改善方案可有效提高液晶显示面板的抗电磁干扰性能, 提高LCDs产品电磁兼容性能。

Aiming at the LCDs’ abnormal display under electromagnetic interference, a comprehensive method is proposed to improve LCDs electromagnetic immunity and display under complex electromagnetic environment based on the signal transmission integrity theory. Firstly, the abnormal display mechanism under electromagnetic interference is analyzed based on signal integrity. Secondly, the scheme of improving LCDs electromagnetic immunity performance is summarized based on the three aspects of adaptive signal quality enhancement model, signal transmission path optimization and LCDs composite absorbing material. Finally, electromagnetic simulation and product testing results demonstrate that the above proposed scheme can effectively improve LCDs anti-electromagnetic interference and electromagnetic compatibility performance.