光电工程, 2019, 46 (6): 180623, 网络出版: 2019-07-10
电润湿电子纸的实时动态显示 驱动系统实现
Real-time dynamic driving system implementation of electrowetting display
摘要
为了实现电润湿电子纸显示器实时播放视频, 本文设计了 DVI视频图像编解码系统加上 FPGA时序控制的显示驱动系统。DVI系统负责获取信号源并进行图像编解码, FPGA负责视频图像数据的缓存处理以及驱动波形的控制。本文提出的多灰度动态对称驱动波形, 可改善油墨分裂现象, 并且在增加灰度等级的同时抑制电荷捕获现象。实验表明: 该系统成功改善了油墨分裂、电荷捕获等问题, 成功驱动 1024×768分辨率的电润湿显示器跟随 PC端进行实时视频播放, 视频的帧率达到 60帧/秒, 像素的最高灰度达到 15阶, 满足电润湿电子纸动态显示视频的要求。
Abstract
In order to achieve electrowetting real-time display, a display driving system, consisting of a DVI video codec system and FPGA timing control system, is designed. DVI video codec system is responsible for obtaining signal sources and for image coding and decoding. FPGA is responsible for buffering and processing of video data and for controlling electrowetting driving waveforms. This paper also proposes an improved multi-grayscales dy-namic symmetrical driving waveform, which improves the ink-splitting phenomenon and suppresses the charge-trapping phenomenon while increasing the gray level. The results show that the driving system successfully improves the problems of oil-splitting and charge-trapping, and drives the 1024×768 resolution electrowetting display to play video in real time following the computer. The frame rate of the video reaches 60 frames/second, and the highest gray level of the pixel reaches 15. These properties meet the requirements for dynamic display of the electrowetting paper.
钱明勇, 林珊玲, 曾素云, 林志贤, 郭太良, 唐彪. 电润湿电子纸的实时动态显示 驱动系统实现[J]. 光电工程, 2019, 46(6): 180623. Qian Mingyong, Lin Shanling, Zeng Suyun, Lin Zhixian, Guo Tailiang, Tang Biao. Real-time dynamic driving system implementation of electrowetting display[J]. Opto-Electronic Engineering, 2019, 46(6): 180623.