Premium
68.5L: Late‐News Paper : Advances in Active‐Matrix Color Displays Using Electrophoretic Ink and Color Filters
Author(s) -
Bouchard A.,
Doshi H.,
Kalhori B.,
Oleson A.
Publication year - 2006
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 - 10.1889/1.2433429
Subject(s) - brightness , inkwell , color gel , color filter array , computer science , primary color , dynamic range , full color , artificial intelligence , computer graphics (images) , materials science , computer vision , optics , optoelectronics , physics , nanotechnology , layer (electronics) , speech recognition , thin film transistor
An improved full color active matrix electronic paper display (EPD) prototype using a custom design color filter array with E Ink's electrophoretic technology is reported. Improvements over previous efforts are achieved by using a) improved ink formulations with higher dynamic range, b) 4 bit gray scale for each color and c) a color filter design with RGBW pixel layout to improve brightness and dynamic range. As a result, the whiteness of the background page is preserved while enabling color. In addition, due to the “paper‐like” optics, the brightness and saturation of the optical states are largely independent of viewing angle or illumination conditions.