Electrowetting display (EWD) is the most potential technology among new electronic paper technologies. It not only has the advantages of electrophoretic display (EPD) technology but also can realize color video playback. Therefore, this technology has been widely studied in recent years. Driving waveform is a voltage sequence which can drive pixels to display gray scales in EWDs. As one of the key technologies, it directly affects the display effect of pixels. In this paper, we give a review of the display principle of EWDs and the research status of driving waveforms. At the same time, the contact angle hysteresis, charge trapping, and oil splitting are also reviewed, which can provide a reference value for designing driving waveforms.

中文翻译：

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电润湿显示器驱动波形回顾

电润湿显示（EWD）是新型电子纸技术中最具潜力的技术。它不仅具有电泳显示（EPD）技术的优点，而且可以实现彩色视频播放。因此，该技术近年来得到了广泛的研究。驱动波形是一种电压序列，可以驱动像素在 EWD 中显示灰度。作为关键技术之一，它直接影响像素的显示效果。本文综述了EWD的显示原理和驱动波形的研究现状。同时还对接触角滞后、电荷俘获和油分裂进行了综述，可为设计驱动波形提供参考价值。