Full-color reflective display device using holographically fabricated polymer-dispersed liquid crystal (HPDLC)

1999 ◽  
Vol 7 (1) ◽  
pp. 17 ◽  
Author(s):  
Munekazu Date ◽  
Yoshie Takeuchi ◽  
Keiji Tanaka ◽  
Kinya Kato
Keyword(s):  
Liquid Crystal ◽  
Display Device ◽  
Polymer Dispersed Liquid Crystal ◽  
Full Color ◽  
Polymer Dispersed ◽  
Reflective Display

Reflective Flat Panel Display Materials Based on Holographically Formed Liquid Crystal-Polymer Dispersions

1997 ◽  
Vol 471 ◽  
Author(s):  
A. D. Williams ◽  
E. W. Nelson ◽  
L. D. Silverstein ◽  
T. G. Fiske ◽  
G. P. Crawford
Keyword(s):  
Liquid Crystal ◽  
Flat Panel Display ◽  
Polymer Dispersed Liquid Crystal ◽  
Full Color ◽  
Low Concentrations ◽  
Voltage Curve ◽  
Electro Optic ◽  
Polymer Dispersed ◽  
Chiral Dopants ◽  
Polymer Dispersions

ABSTRACTHolographically formed polymer dispersed liquid crystal (H-PDLC) displays are investigated in terms of their electro-optic performance parameters and their potential as capable full color display systems. It is demonstrated that the transmission-voltage curve can be modified by low concentrations of chiral dopants, increasing the steepness of the response curve. To probe the details of full-color reflective H-PDLC displays, we invoke a generalized colorimetric/photometric analysis to estimate the display reflectance, white-point, and chromaticity diagram for a vertically integrated stack of red, green, and blue H-PDLC displays.

Advances in Holographic Polymer Dispersed Liquid Crystal Technology

1999 ◽  
Vol 559 ◽  
Author(s):  
C. C. Bowley ◽  
A. K. Fontecchio ◽  
J.-J. Lin ◽  
H. Yuan ◽  
G. P. Crawford
Keyword(s):  
Liquid Crystal ◽  
Phenomenological Model ◽  
Polymer Dispersed Liquid Crystal ◽  
Unusual Effect ◽  
Recent Advances ◽  
Reflection Peak ◽  
Polymer Dispersed ◽  
Dual Domain ◽  
Reflective Display ◽  
Liquid Crystal Technology

ABSTRACTWe discuss recent advances in reflective holographically-formed polymer dispersed liquid crystal materials in the context of their suitability for reflective display applications. A dual-domain phenomenon resulting in a broadened reflection peak is presented. A simple phenomenological model is developed to explain this unusual effect The effect of monomer functionality on the reflectance characteristics of these materials is also discussed. Monomers of effective functionality ∼4.5 yield the brightest holograms, however, the data suggests that these systems are currently far from optimal.

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