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22.3: A 3.4‐inch Reflective Colour Active Matrix Liquid Crystal Display without Polarisers
Author(s) -
Kretz T.,
Gomez G.,
Lebrun H.,
Coates D.,
Reaney S.
Publication year - 2002
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 - 10.1889/1.1830903
Subject(s) - active matrix , materials science , contrast ratio , liquid crystal display , liquid crystal , optics , optoelectronics , matrix (chemical analysis) , aperture (computer memory) , high contrast , pixel , thin film transistor , nanotechnology , physics , layer (electronics) , acoustics , composite material
A 3.4″ reflective colour AMLCD was developed using the standard a‐Si:H TFT technology and a vertically aligned dyed cholesteric liquid crystal mixture. Optimised liquid crystal mixture, de‐saturated colour filters and high pixel aperture ratio were achieved in order to demonstrate a high reflectivity with an acceptable contrast ratio in a large viewing cone.