Enhanced Electrooptical Characteristics of Twisted Nematic Liquid Crystal Display With Thin Films


A rubbing-free liquid crystal (LC) alignment methodology is extremely desirable for future generations of enormous high-resolution LC-display technology. In this paper, ion-beam (IB) bombardment was distributed as an LC alignment method in order to switch the $hboxZrO_2$ surface, and unidirectional LCs were achieved. The pretilt angle was found to be a operate of the IB incident energy, and a possible mechanism of the LC alignment was investigated with X-ray photoelectron spectroscopy (XPS). XPS analysis showed that the LC alignment on the IB-irradiated $hboxZrO_2$ surface was primarily due to the reformation of O–Zr bonds. The response time of a twisted nematic cell with IB-irradiated $hboxZrO_2$ thin films was superior to those with rubbed polyimide films.

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