Photo-current measurements of liquid crystal cells to clarify the mechanism of flicker drifts

We performed photo-current experiments on various liquid crystal (LC) cells, and compared with the results of conventional evaluations of reliability of LC display (LCD) such as voltage holding ratio (VHR), ion density, and flicker. The accumulated charges in LC cells were estimated by the time inte...

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Bibliographic Details
Published inMolecular Crystals and Liquid Crystals Vol. 662; no. 1; pp. 165 - 175
Main Authors Nagano, Yasutomo, Huang, Ming-Hung, Huang, Wen-Fu
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 11.02.2018
Taylor & Francis Ltd
Subjects
Drift
Flicker
flicker drift
Ion density (concentration)
light stability
liquid crystal
Liquid crystal displays
photo-current
poly-imide
Reliability analysis
Time integration
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Summary:We performed photo-current experiments on various liquid crystal (LC) cells, and compared with the results of conventional evaluations of reliability of LC display (LCD) such as voltage holding ratio (VHR), ion density, and flicker. The accumulated charges in LC cells were estimated by the time integration of photo-currents. Good correlations among observed photo-current, estimated charges, and flicker drift were obtained, which revealed that the accumulated charges in LC cells are one of the major factors to cause the flicker drift.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2018.1467614