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8.2: A New Method for TN Cell Twist Angle and Retardation Measurement
Author(s) -
Zhang Hailiang,
Kelly Jack
Publication year - 2000
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 - 10.1889/1.1833062
Subject(s) - twist , liquid crystal , value (mathematics) , surface (topology) , optics , condensed matter physics , physics , materials science , mathematics , geometry , statistics
We propose a new measurement method to determine the twist angle and the retardation value in a twisted nematic(TN) or super twisted nematic (STN) cell. No prior knowledge of the cell is required. The surface director direction and the twist sense are also determined.