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。 OLED (Organic Light Emitting Diode) One of the most commonly used process of colorization is RGB pixel independent lighting method. After a detailed analysis of the brightness stability and service life of various materials, it is concluded that the white material of OLED has higher power efficiency and stability, and the waste of power is caused by the synthesis of white OLED by RGB three colors. Accordingly, a four-color method is proposed: in addition to the red, green and blue (RGB) luminescent materials, there are white luminescent materials, and the white luminescent materials are directly generated from the white luminescent materials. The article first introduces the working principle of this method, and then discusses the driving circuit of this color OLED realization method in detail. Under the premise of ensuring the color and life of the original RGB three-color display, the color display of the OLED is realized with RGBW four-color by converting the current of each RGB. The results show that this display method can reduce the total driving power, but also can control the color balance of the high-resolution panel.