P‐174: The causes and improvement of the waterfall in Mini/MicroLED Displays

Xiaoying Guo, Jinfeng Liu, Junyao Fan, Sili Liu, Nate Kim
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Abstract

The display product using Mini/MicroLED backlight, in the case of using the PWM dimming method, with the OC (open cell, OC) of the 4‐mask process, there will be a significant change in the horizontal light and dark band under the low gray level, which is called the waterfall phenomenon in the industry. In this paper, the causes of the waterfall phenomenon are analyzed and studied, and three methods of improving the waterfall are proposed. Experimental tests were carried out on the module of 34‐inch 1152 partition, and the display effect before and after the improvement was compared, and the effectiveness of the proposed method was verified.
P‐174:Mini/MicroLED显示器中瀑布的原因和改进
采用Mini/MicroLED背光的显示产品,在采用PWM调光方法的情况下,配合OC (open cell, OC)的4‐掩模工艺,在低灰度级下会出现水平明暗带的明显变化,这在业内被称为瀑布现象。本文对瀑布现象产生的原因进行了分析和研究,并提出了三种改善瀑布现象的方法。在34英寸1152隔板模块上进行了实验测试,比较了改进前后的显示效果,验证了所提方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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