We demonstrate enhanced surface anchoring energy and control of pretilt angle in a nematic liquid crystal cell with vertical alignment and polymerized surfaces (PS-VA). The polymerized surfaces are formed by ultraviolet (UV) irradiation-induced phase separation of a minute amount of a reactive monomer in the vertical-aligned nematic liquid crystal. By introducing a bias voltage during UV curing, surface-localized polymer protrusions with a dimension of 100nm and a field-induced pretilt angle are observed. Experimental evidences and theoretical analyses validate that PS-VA has increased surface anchoring strength by two folds and pretilt angle has been changed from 89° to 86° compared to those of a VA cell. The enabling PS-VA cell technique with excel electro-optical properties such as very good dark state, high optical contrast, and fast rise and decay times may lead to development of a wide range of applications.

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In this work, an LCD mode with vertical alignment and in‐plane switching electrodes (VA‐IPS) is proposed to improve optical performance. This mode can control tilt angles of LC molecules via combinations of various distances of the in‐plane‐switching electrodes, and thus improve color washout. Also, a new driving scheme combining T‐T type driving method with charge‐shared (CS) structure is presented to further improve the picture quality at oblique viewing angle by not only adjusting spacing of in‐plane‐switching electrode pairs but also creating an extra voltage difference by CS structure in one pixel. After simulation and optimization, this mode possesses very small oblique gamma distortion and TRDI as low as 0.13.

This paper presented the releasing behaviors of image sticking. Diffusion effect plays the critical role to release image sticking; therefore, higher temperature accelerates the releasing behavior. The releasing speed at temperature of 60C is faster than that at 25C by a factor of 6 in our demonstration.

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