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47.4: Study on the flicker shift in FFS TFT‐LCD Mode
Author(s) -
Shi Chengying,
Cai Min,
Fu Jiongliang,
Wang Yiming,
Qin Dandan,
Xia Zhiqiang
Publication year - 2019
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 - 10.1002/sdtp.13552
Subject(s) - backlight , flicker , liquid crystal display , voltage , transmittance , materials science , thin film transistor , optoelectronics , mode (computer interface) , threshold voltage , reliability (semiconductor) , electrical engineering , optics , physics , transistor , computer science , engineering , power (physics) , composite material , layer (electronics) , operating system , quantum mechanics
Based on FFS TFT‐LCD panel, flicker shift with different cell materials was investigated, including lighting effect on the shift value with backlight on and off. Negative LC shifts much smaller than positive LC, even after reliability test. High resistance PI A shows a better result less than 1dB, while the low resistance PI B shift about 8dB, including introduce a DC voltage when lighting is on. However this DC can be compensated mainly by DC caused by the flexoelectric effect, which proposed a method to reduce flicker shift value with PI B. The DC caused by the flexoelectric effect is further improved by the asymmetric voltage‐transmittance (VT) curve. These studies can give the guidance for improving the flicker shift phenomenon in FFS mode.