In this presentation, a rubbing-free LC device fabricated with organic Single-Crystal Rubrene (SCR) substrate has been investigated. The LC orientation on SCR is determined with capillary flowing direction of LCs, the SCR-coated LC cell has a homogeneous alignment with low pretilt angle. The SCR-based LC cell performs a wider thermal tolerance than that of the PI-based cell, owing to the strong anchoring property of SCR surface. SCR-based LC cell performs a lower operation voltage, faster response time, and higher voltage holding ratio than the PI-based LC cell. A rubbing-free modal LC device based on SCR layer is under development.
By controlling the deposition time of indium–tin–oxide (ITO) film, a high resistance of ultra-thin ITO (UTITO) layer can be realized. The UTITO layer is then deposited at the interface between the dielectric and LC layers in the hole-patterned liquid crystal (LC) lens. The UTITO application spreads the fringing field into the aperture hole center of LC lens and thus assists the LC reorientation therein. That considerably decreases the addressing voltage and switching-on time of LC lens. The UTITO LC lens also provides a wide tunable focus function, and preserves the lens quality and imaging performance as the conventional hole-patterned LC lens.
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