Design, Fabrication and Measurement of Full-Color Reflective Electrowetting Displays

Guisong Yang; Benyou Wang; Zhiqiang Chang; Qing Liu; Linwei Liu

doi:10.3390/mi13112034

Design, Fabrication and Measurement of Full-Color Reflective Electrowetting Displays

Micromachines (Basel). 2022 Nov 21;13(11):2034. doi: 10.3390/mi13112034.

Authors

Guisong Yang¹, Benyou Wang¹, Zhiqiang Chang¹, Qing Liu¹, Linwei Liu²

Affiliations

¹ College of Electronics and Information Engineering, West Anhui University, Lu'an 237012, China.
² Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.

Abstract

We designed, fabricated and measured full-color, reflective electrowetting displays (EWDs). The display system is composed of three-layer cyan, magenta and yellow EWD elements fabricated with standard photolithographic techniques. The EWDs were driven successfully by the proposed control system and the measurement results show that the electro-optical performance was improved. The aperture ratio of the EWD element can be tuned from 0 to ∼80% as the applied voltage is changed from 0 to 30 V. The response time and the color gamut were measured to be ∼18 ms and ∼58% NTSC, respectively. This paper makes it possible for large numbers of reflective full-color EWDs to be fabricated directly, with advantages of saving power significantly by 85% and no eye irritation compared with LED displays.

Keywords: control system; electrowetting display; fabrication process; full color.

Grants and funding

This work was financially supported by the National Key R&D Program of China (2016YFB0401502), the Scientific Research Foundation for High-Level Talents of West Anhui University (WGKQ2021051), the National Natural Science Foundation of China (62102002) and the Natural Science Foundation of Anhui Province in China (2008085QF291).