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P‐192: Novel Flexible Photo Sensing Pixel for Large Size Electrophoretic Display with Pen Writing Function
Author(s) -
Kung ChenPang,
Chiang WenJen,
Chen YuJen,
Wang PiHsien,
Wang MingHsi,
Ho JiaChong,
Lee ChengChung
Publication year - 2011
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3621253
Subject(s) - pixel , radius of curvature , signal (programming language) , computer science , materials science , laser , optics , curvature , optoelectronics , physics , artificial intelligence , mathematics , mean curvature , geometry , mean curvature flow , programming language
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.