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Single‐polarizer reflective twisted nematics
Author(s) -
Bey Emma,
Saynor Kirstin,
Tillin Martin,
Towler Mike
Publication year - 1999
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1985274
Subject(s) - polarizer , liquid crystal , optics , reflectivity , materials science , white light , physics , birefringence
Abstract— A general expression for the reflectance of a single‐polariser twisted‐nematic device is given. From this, solutions of liquid‐crystal parameters that will convert linear‐to‐circular (L‐C) and linear‐to‐linear (L‐L) polarizations are derived. A comparison of the field behavior for some normally black and normally white devices made from the lower Δ nd /λ solutions of the L‐C and L‐L are presented. The effect of doping on normally white devices is considered.