Abstract
This study uses the time-evolved voltage holding ratio (VHR) to measure the influence of UV exposure on a nematic liquid-crystal cell. Apart from the real-time measurement during the exposure, the time-dependent recovery of VHR is also monitored after a certain amount of UV irradiation. Our experimental results show that the cell impregnated with an adequate content of the anatase TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> as a nano-additive possesses a higher VHR, which unambiguously implies that the TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> nanoparticles are capable of preventing the serious ion effect caused by the harmful UV. Achieving the "green" concept, this research suggests a new approach to reduce the ion effect and extend the life of LCD devices under sunlight.
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