OLED面板的彩色显示驱动技术研究

Research on OLED Color Display Driver Technology

摘要:

OLED(有机发光二极管)彩色化最常用的工艺方法之一是RGB象素独立发光法。在详细分析了各种材料的亮度稳定性和使用寿命后,得出OLED的白光材料具有更高的功率效率和稳定性,由RGB三色合成白光OLED会造成功率的浪费。据此提出了一种四色法:即发光材料除了红、绿、蓝(RGB)三色发光材料外,还有白色发光材料,由白OLED材料直接产生白光。文章首先介绍了这种方法的工作原理,然后对这种彩色OLED实现方式的驱动电路进行了详细的探讨。在保证原RGB三色显示的色彩和寿命的前提下,通过对每个RGB的电流进行换算,用RGBW四色实现了OLED的彩色显示。结果表明这种显示法在降低总的驱动功率的同时,还可对高分辨率面板的色彩平衡变化加以控制。

Abstract:

The most commonly used technique of OLED(organic light-emitting diode) colorization is RGB polymer emitters.In this paper,based on the detailed analysis of the brightness stability and life of various materials,it is obtained that white OLED materials have higher power efficiency and stability,but the synthesis of white light from RGB three-color OLED will cause power waste.Thus a four-color method is proposed,in which despite of red,green,blue(RGB) three-color light-emitting materials,white light-emitting ...