P-192: Novel Flexible Photo Sensing Pixel for Large Size Electrophoretic Display with Pen Writing Function

In this paper, we proposed a novel photo sensing pixel circuit for a large‐area flexible e‐reader utilizing an active matrix electrophoretic display (AMEPD). The photo sensing pixel consists of only 2 amorphous Si:H (a‐Si:H) transistors to achieve light sensing, pixel switching and signal amplificat...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2011-06, Vol.42 (1), p.1822-1825
Main Authors: Kung, Chen-Pang, Chiang, Wen-Jen, Chen, Yu-Jen, Wang, Pi-Hsien, Wang, Ming-Hsi, Ho, Jia-Chong, Lee, Cheng-Chung
Format: Article
Language:English
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Summary:In this paper, we proposed a novel photo sensing pixel circuit for a large‐area flexible e‐reader utilizing an active matrix electrophoretic display (AMEPD). The photo sensing pixel consists of only 2 amorphous Si:H (a‐Si:H) transistors to achieve light sensing, pixel switching and signal amplification functions without extra driving signals. The pixel output signal is up to 2V under illuminations of a common LED laser pointer. No degradation of the pixel output performance is observed after bending of more than 5000 times under 2cm curvature radius.
ISSN:0097-966X
2168-0159
DOI:10.1889/1.3621253