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基于交流电和直流电的电润湿显示器动态自适应显示系统

Dynamic Adaptive Display System for Electrowetting Displays Based on Alternating Current and Direct Current.

作者信息

Li Shixiao, Xu Yijian, Zhan Zhiyu, Du Pengyuan, Liu Linwei, Li Zikai, Wang Huawei, Bai Pengfei

机构信息

Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.

出版信息

Micromachines (Basel). 2022 Oct 20;13(10):1791. doi: 10.3390/mi13101791.

DOI:10.3390/mi13101791
PMID:36296144
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9610002/
Abstract

As a representative of the new reflective display technology, electrowetting display (EWD) technology can be used as a video playback display device due to its fast response characteristics. Direct current (DC) driving brings excellent reflectivity, but static images cannot be displayed continually due to charge trapping, and it can cause afterimages when playing a dynamic video due to contact angle hysteresis. Alternating current (AC) driving brings a good dynamic video refresh ability to EWDs, but that can cause flickers. In this paper, a dynamic adaptive display model based on thin film transistor-electrowetting display (TFT-EWD) was proposed. According to the displayed image content, the TFT-EWD display driver was dynamically adjusted by AC and DC driving models. A DC hybrid driving model was suitable for static image display, which could effectively suppress oil backflow and achieve static image display while ensuring high reflectivity. A source data non-polarized model (SNPM) is an AC driving model which was suitable for dynamic video display and was proposed at the same time. Compared with DC driving, it could obtain smooth display performance with a loss of about 10 absorbance units (A.U.) of reflective luminance, which could solve the flicker problem. With the DC hybrid driving model, the ability to continuously display static images could be obtained with a loss of 2 (A.U.) of luminance. Under the AC driving in SNPM, the reflected luminance was as high as 67 A.U., which was 8 A.U. higher than the source data polarized model (SPM), and it was closer to the reflected luminance under DC driving.

摘要

作为新型反射式显示技术的代表，电润湿显示（EWD）技术因其快速响应特性可作为视频播放显示设备。直流（DC）驱动带来出色的反射率，但由于电荷俘获，静态图像无法持续显示，并且在播放动态视频时由于接触角滞后会产生重影。交流（AC）驱动赋予电润湿显示器良好的动态视频刷新能力，但会导致闪烁。本文提出了一种基于薄膜晶体管 - 电润湿显示（TFT - EWD）的动态自适应显示模型。根据显示的图像内容，通过交流和直流驱动模型动态调整TFT - EWD显示驱动器。直流混合驱动模型适用于静态图像显示，能有效抑制油回流，在确保高反射率的同时实现静态图像显示。源数据非偏振模型（SNPM）是一种适用于动态视频显示的交流驱动模型，与直流驱动相比，它能在反射亮度损失约10个吸光度单位（A.U.）的情况下获得平滑的显示性能，可解决闪烁问题。采用直流混合驱动模型时，在亮度损失2（A.U.）的情况下可获得连续显示静态图像的能力。在SNPM的交流驱动下，反射亮度高达67 A.U.，比源数据偏振模型（SPM）高8 A.U.，且更接近直流驱动下的反射亮度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/1e566f2bab3f/micromachines-13-01791-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/9ca955fcaf01/micromachines-13-01791-g0A1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/57543414d0ed/micromachines-13-01791-g0A2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/87ccbf9a37fd/micromachines-13-01791-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/5285fd764315/micromachines-13-01791-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/3ebf19cc8548/micromachines-13-01791-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/e1b51d61e532/micromachines-13-01791-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/03a2124b2c65/micromachines-13-01791-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/5ae3a1d649c0/micromachines-13-01791-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/d0ac8246fae2/micromachines-13-01791-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/86435c07b78f/micromachines-13-01791-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/998749cbba4f/micromachines-13-01791-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/1e566f2bab3f/micromachines-13-01791-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/9ca955fcaf01/micromachines-13-01791-g0A1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/57543414d0ed/micromachines-13-01791-g0A2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/87ccbf9a37fd/micromachines-13-01791-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/5285fd764315/micromachines-13-01791-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/3ebf19cc8548/micromachines-13-01791-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/e1b51d61e532/micromachines-13-01791-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/03a2124b2c65/micromachines-13-01791-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/5ae3a1d649c0/micromachines-13-01791-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/d0ac8246fae2/micromachines-13-01791-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/86435c07b78f/micromachines-13-01791-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/998749cbba4f/micromachines-13-01791-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f96a/9610002/1e566f2bab3f/micromachines-13-01791-g010.jpg

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本文引用的文献

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Toward Suppressing Oil Backflow Based on a Combined Driving Waveform for Electrowetting Displays.基于复合驱动波形抑制电润湿显示器中油回流的研究
Micromachines (Basel). 2022 Jun 15;13(6):948. doi: 10.3390/mi13060948.
2
A Separated Reset Waveform Design for Suppressing Oil Backflow in Active Matrix Electrowetting Displays.一种用于抑制有源矩阵电润湿显示器中油回流的分离复位波形设计
Micromachines (Basel). 2021 Apr 27;12(5):491. doi: 10.3390/mi12050491.
3
Oil Conductivity, Electric-Field-Induced Interfacial Charge Effects, and Their Influence on the Electro-Optical Response of Electrowetting Display Devices.
油的电导率、电场诱导的界面电荷效应及其对电润湿显示器件电光响应的影响。
Micromachines (Basel). 2020 Jul 20;11(7):702. doi: 10.3390/mi11070702.
4
Driving Waveform Design of Electrowetting Displays Based on an Exponential Function for a Stable Grayscale and a Short Driving Time.基于指数函数的电润湿显示器驱动波形设计，用于实现稳定灰度和短驱动时间
Micromachines (Basel). 2020 Mar 16;11(3):313. doi: 10.3390/mi11030313.
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Driving Waveform Design with Rising Gradient and Sawtooth Wave of Electrowetting Displays for Ultra-Low Power Consumption.用于超低功耗的电润湿显示器的具有上升梯度和锯齿波的驱动波形设计
Micromachines (Basel). 2020 Jan 28;11(2):145. doi: 10.3390/mi11020145.
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A Driving System for Fast and Precise Gray-Scale Response Based on Amplitude-Frequency Mixed Modulation in TFT Electrowetting Displays.基于薄膜晶体管电润湿显示器中幅度-频率混合调制的快速精确灰度响应驱动系统。
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