Self ‐Powered Colorful Dynamic Electrowetting Display Systems Based on Triboelectricity

Self-powered colorful dynamic display systems are developed by integrating the nanotube-patterned triboelectric nanogenerator (TENG) with the electrowetting display (EWD). By controlling the electrical output applied to the different pixel layers of the EWD device, the self-powered dynamic multi-color display can be achieved. This work contributes to portable and wearable electronic ink displays, indoor and outdoor sports equipment, and communication devices. AbstractElectrowetting displays (EWDs) based on microfluidics are highly sought after in the fields of electronic devices, smart homes, and information communication. However, the power supply of the EWD systems for visually engaging multi-color displays remains a big challenge. Herein, self-powered colorful dynamic display systems are developed by integrating the triboelectric nanogenerator (TENG) with the EWD device. The TENG is designed with a nanotube-patterned surface and can generate open-circuit voltages ranging from 30 to 295  V by controlling the contact area. The wetting property of the micro-droplet exhibits a response to the applied voltage, enabling the triboelectricity-triggered electrowetting-on-dielectric. Driven by the voltage of 160 V, the monochromatic EWD exhibits bright color switching from magenta to tran sparent with a pixel aperture ratio of 78%, and the recovery process can be rapidly completed. Furthermore, the self-powered colorful dynamic EWD system can be achieved. By selectively applying t...
Source: Small - Category: Nanotechnology Authors: Tags: Research Article Source Type: research