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Proceedings Paper

Elimination of image flicker in a fringe-field switching liquid crystal cell
Author(s): Tae-Hoon Yoon; Seung-Won Oh; Jong-Min Baek; Jung-Wook Kim; Ji-Hoon Lee
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Paper Abstract

Recently, low-frequency driving of a display panel to reduce the power consumption has drawn much attention, especially in mobile devices. In case a liquid crystal display panel is driven by a fringe-field at a low frequency, the image flickering phenomenon can be observed when the sign of the applied electric field is reversed. Image flicker can be eliminated simply by applying a bias voltage to a liquid crystal cell so that the transmittance during the positive frame is the same as that during the negative frame. However, it may be difficult to employ this technique for practical applications because it requires a bias voltage that is dependent on the gray level. In this talk, we introduce methods to eliminate the image flicker by controlling the material parameters of liquid crystals, such as the flexoelectric anisotropy and the dielectric anisotropy. Methods to eliminate image flicker without controlling the material parameters, such as driving by a bipolar wave and optimization of the electrode spacing, are also introduced.

Paper Details

Date Published: 23 September 2016
PDF: 7 pages
Proc. SPIE 9940, Liquid Crystals XX, 994009 (23 September 2016); doi: 10.1117/12.2235987
Show Author Affiliations
Tae-Hoon Yoon, Pusan National Univ. (Korea, Republic of)
Seung-Won Oh, Pusan National Univ. (Korea, Republic of)
Jong-Min Baek, Pusan National Univ. (Korea, Republic of)
Jung-Wook Kim, Pusan National Univ. (Korea, Republic of)
Ji-Hoon Lee, Chonbuk National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9940:
Liquid Crystals XX
Iam Choon Khoo, Editor(s)

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