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Advances in Condensed Matter Physics
Volume 2018, Article ID 6386428, 6 pages
Research Article

Light Leakage of Multidomain Vertical Alignment LCDs Using a Colorimetric Model in the Dark State

1Department of Electrical Engineering, Feng Chia University, Taichung 40724, Taiwan
2Ph.D. Program of Electrical and Communications Engineering, Feng Chia University, Taichung 40724, Taiwan
3Department of Optometry, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan

Correspondence should be addressed to Shang-Min Yeh; moc.liamg@pay.motpo

Received 30 March 2018; Accepted 30 April 2018; Published 3 June 2018

Academic Editor: Jia-De Lin

Copyright © 2018 Chuen-Lin Tien et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Light leakage from liquid crystal displays in the dark state is relatively larger and leads to a degraded contrast ratio and color shift. This work describes a novel colorimetric model based on the Muller matrix that includes depolarization of light propagating through liquid crystal molecules, polarizers, and color filters. In this proposed model, the chromaticity can be estimated in the bump and no-bump regions of an LCD. We indicate that the difference between simulation and measurement of chromaticity is about 0.01. Light leakage in the bump region is three times that in no-bump region in the dark state.