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26.4: Bistable Polymer Dispersed Cholesteric Reflective Display
Author(s) -
Yang D.K.,
Lu Z. J.,
Chien L. C.,
Doane J. W.
Publication year - 2003
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 - 10.1889/1.1832443
Subject(s) - materials science , bistability , planar , cholesteric liquid crystal , texture (cosmology) , dispersion (optics) , optics , optoelectronics , polymer , liquid crystal , multiplexing , conic section , liquid crystal display , computer science , computer graphics (images) , image (mathematics) , physics , composite material , telecommunications , computer vision , geometry , mathematics
We have developed a polymer dispersed cholesteric liquid crystal which exhibits two stable states at zero field: reflecting planar texture and non‐reflective focal conic texture. Both states have thresholds under driving voltage pulses. The material can be used to make multiplexed displays on passive matrix. Because the liquid crystal is encapsulated, the dispersion can be coated on plastic substrates to make large size displays. Furthermore, it can be used to make single layer full color displays by using a photo‐tuning method.