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Proceedings Paper

Threshold and grayscale stability of Microcup electronic paper
Author(s): HongMei Zang; Jiunn-Jye Hwang; Haiyan Gu; Jack Hou; Xin Weng; Yajuan Chen; Rong Chang Liang
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Paper Abstract

Plastic passive matrix (PM) and active matrix (AM) electronic paper displays (EPDs) have been prepared by SiPix’s Microcup roll-to-roll manufacturing processes using ITO/PET films. The Microcup displays have shown outstanding environmental stability and excellent physico-mechanical properties such as scratch, impact and flexure resistances even in high temperature and humidity conditions. A PMEPD recently prepared on inexpensive row-and-column patterned ITO/PET films has shown a contrast ratio of ≥10, ton ≤30 msec at ≤40 V, and a threshold voltage of ≥15 V. More than 8 levels of grayscale with outstanding bistability have been demonstrated by either pulse width or pulse count modulation. No noticeable degradation of the mid-tone images has been observed even after the power was turned off for more than 5 days. Moreover, the electro-optical responses, particularly the threshold voltage and gamma of the PMEPDs remain essentially the same within a wide range (20-60°C) of operation temperature.

Paper Details

Date Published: 28 May 2004
PDF: 7 pages
Proc. SPIE 5289, Liquid Crystal Materials, Devices, and Applications X and Projection Displays X, (28 May 2004); doi: 10.1117/12.524529
Show Author Affiliations
HongMei Zang, SiPix Imaging, Inc. (United States)
Jiunn-Jye Hwang, SiPix Imaging, Inc. (United States)
Haiyan Gu, SiPix Imaging, Inc. (United States)
Jack Hou, SiPix Imaging, Inc. (United States)
Xin Weng, SiPix Imaging, Inc. (United States)
Yajuan Chen, SiPix Imaging, Inc. (United States)
Rong Chang Liang, SiPix Imaging, Inc. (United States)

Published in SPIE Proceedings Vol. 5289:
Liquid Crystal Materials, Devices, and Applications X and Projection Displays X
Ming Hsien Wu; Liang-Chy Chien, Editor(s)

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