Programmed driving waveforms for quick-response liquid powder displays

Author

Yang, Chang-Jing ; Chen, Yung-Fang

Author_Institution

Delta Electron. Inc., Taoyuan, Taiwan

Volume

56

Issue

4

fYear

2010

fDate

11/1/2010 12:00:00 AM

Firstpage

2043

Lastpage

2046

Abstract

A low optical contrast ratio is the major drawback of quick-response liquid powder displays (QRLPDs). In this paper, the electro-optical response of the QRLPD is analyzed, and better optical contrast is found to be obtained if the display is driven by pulse number modulation (PNM). However, PNM driving requires a longer driving duration. To achieve a successful trade-off between image contrast and driving duration, the QR-LPD requires a customized driving waveform. A programmed driving waveform and a design process are proposed. Experimental results show that the programmed driving waveform reduces the driving duration by up to 36.5% compared to conventional methods.

Keywords

electro-optical devices; electrophoretic displays; optical transfer function; pulse modulation; QR-LPD; customized driving waveform; electro-optical response; image contrast; low optical contrast ratio; programmed driving waveform; pulse number modulation; quick response liquid powder display; Nonlinear optics; Optical imaging; Optical pulses; Optical reflection; Optical sensors; Optical switches; Pixel; Electrophoretic display (EPD), Quickresponse liquid powder display (QR-LPD), Driving waveform, Pulse number modulation (PNM).;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2010.5681069

Filename

5681069