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Optical properties of general twisted‐nematic liquid‐crystal displays
Author(s) -
Yeh Pochi
Publication year - 1997
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 - 10.1889/1.1985164
Subject(s) - liquid crystal , liquid crystal display , twist , viewing angle , materials science , transmission (telecommunications) , optics , differential (mechanical device) , matrix (chemical analysis) , matrix method , field (mathematics) , differential equation , physics , computer science , mathematics , quantum mechanics , geometry , pure mathematics , thermodynamics , telecommunications , composite material
Abstract— The optical properties of the field‐off state of a general twisted‐nematic liquid‐crystal display (TN‐LCD) are investigated by using the simple Jones matrix method. Analytic expressions for the transmission properties of the display are obtained. Without resorting to differential equations, the author obtained results which are identical to those obtained previously by using Riccati differential equations. These analytic expressions are extremely useful for explaining the working mechanism of the conventional TN‐LCDs and various STN, OMI, and LTN‐LCDs. In addition, they are also useful for the experimental measurement of the cell gap and twist angle of a general TN‐LCD.