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Optical properties of solvent‐cast polarizer films for liquid‐crystal displays: A viscoelastic modeling framework
Author(s) -
Greener Jehuda,
Lei Herong,
Elman James,
Chen Janglin
Publication year - 2005
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 - 10.1889/1.2121067
Subject(s) - polarizer , citation , computer science , art history , physics , art , world wide web , optics , birefringence
— Many of the films used in polarizer assemblies in LCDs ( e.g. , triacetyl cellulose or TAC) are produced by a solvent‐casting process, which is known to impart optical anisotropy to the film expressed as finite out‐of‐plane birefringence. This feature of the film could have a significant impact on the optical performance of the display and it needs to be accounted for in any compensation scheme for the LC cell. This paper reviews the origin of this optical anisotropy, and it presents a viscoelastic model that links this property to the solvent‐casting process and to some key material parameters. The model results are compared with experimental data generated for polystyrene films cast from toluene, and generally good agreement is demonstrated.