QIAN Fang, GUO Jin, SUN Tao, WANG Ting-feng. Multi-scale SSIM algorithm based on wavelet transforms[J]. , 2015,30(2): 317-325 DOI: 10.3788/YJYXS20153003.0404.
Effect of additive agents on ultraviolet stability of high birefringence liquid crystals
The high birefringence liquid crystals have important applications in LCD
but they are instable under UV exposure due to the conjugated unsaturated structures. The ultraviolet stability of high birefringence liquid crystals was studied in this paper. First
several different additives were added to the liquid crystal mixture A
such as triphenylphosphine oxide
4'-propylbi(cyclohexane)-4-formaldehyde
4-propyl-4'-cyclopentyl-3
5-difluorobiphenyl and UV-P. The liquid crystal mixtures were poured into TN-7.0-R test cells after stirred uniformly
then the test cells were exposed to ultraviolet
finally the liquid crystal parameters were tested. The results show that the UV stability of liquid crystal A can be significantly improved by UV-P
because the UV absorption of UV-P is most similar with liquid crystal A.
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Related Institution
School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University
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