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Self-Powered Colorful Dynamic Electrowetting Display Systems Based on Triboelectricity.

Xingyi Dai¹, Jingkun Yang¹, Chang Shu²

¹Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)

|February 22, 2024

Summary

This study integrates triboelectric nanogenerators (TENGs) with electrowetting displays (EWDs) to create self-powered, colorful dynamic displays. This innovation addresses the power supply challenge for advanced electronic displays.

Keywords:

colorful electrowetting display electrowetting‐on‐dielectric self‐powered triboelectricity

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Area of Science:

Materials Science
Nanotechnology
Display Technology

Background:

Electrowetting displays (EWDs) are promising for electronic devices but face power supply challenges for multi-color applications.
Developing self-powered systems is crucial for portable and wearable electronic ink displays.

Purpose of the Study:

To develop self-powered colorful dynamic display systems by integrating triboelectric nanogenerators (TENGs) with EWDs.
To demonstrate triboelectricity-triggered electrowetting-on-dielectric for display applications.

Main Methods:

Designed a TENG with a nanotube-patterned surface capable of generating 30–295 V.
Investigated the response of micro-droplet wetting properties to applied voltage for triboelectricity-triggered electrowetting-on-dielectric.
Achieved colorful dynamic display by selectively applying voltage to monochromatic EWD layers.

Main Results:

The TENG generated voltages from 30 to 295 V.
A monochromatic EWD showed bright color switching (magenta to transparent) at 160 V with a 78% pixel aperture ratio.
A self-powered colorful dynamic EWD system was successfully demonstrated.

Conclusions:

The integration of TENGs and EWDs offers a viable solution for self-powered, colorful dynamic displays.
This technology advances portable and wearable electronic ink displays, sports equipment, and information communication devices.