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P‐120: Optical Properties of Solvent‐Cast Polarizer Films for Liquid Crystal Display: A Viscoelastic Modeling Framework
Author(s) -
Greener Jehuda,
Lei Herong,
Elman James,
Chen Janglin
Publication year - 2005
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 - 10.1889/1.2036554
Subject(s) - polarizer , viscoelasticity , materials science , liquid crystal , solvent , liquid crystal display , composite material , optics , optoelectronics , organic chemistry , chemistry , physics , birefringence
Abstract The optical properties of polarizer films in LCD are critical to the optical performance of the display. Solvent‐cast cellulosic films (e.g., triacetyl cellulose or TAC) are used in conventional polarizer assemblies, in part, for their high transmission and relatively low optical retardation. However, even low‐birefringent materials such as TAC film possess some finite level of residual out‐of‐plane retardation that needs to be accounted for in various compensation schemes for the display. This paper reviews the origin of this optical anisotropy, and it describes a viscoelastic model that links this property to the solvent‐casting process.