| Summary: | 碩士 === 國立臺北科技大學 === 光電工程系研究所 === 101 === In this paper, we study the alignment uniformity in the horizontal and vertical alignment with ferroelectric liquid crystal. In the horizontal alignment condition, the ferroelectric liquid crystal polymer is added, and UV light irradiation to obtain a uniform alignment of the liquid crystal cell, the transmittance curve is Half-V curve. Then we use polymer under applied the electric field, not only achieve defect-free alignment structure, but there is symmetry V-shape curve.
We also studied the vertical alignment liquid crystal cell, and are discussed d / p <1 and d / p> 1 case. Under the d / p <1 condition, the more easily to achieve uniform alignment of the results, but there is a problem, which a little light leakage at the initial state without voltage applied, so we change using d / p> 1 structures. In this structure, since the spiral structure is perpendicular to the substrate, the average optical axis perpendicular to the substrate, so there is a good dark state, and in the optical characteristics of the portion of the V-Shape symmetric characteristic curve, the response time is maintained in micro-second grade. In addition, we are also added polymer in the ferroelectric liquid crystal, and analyze the effect in vertical structure of the polymer ferroelectric liquid crystal cell.
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