Abstract— A 9‐in. full‐color polymer‐stabilized OCB TFT‐LCD with stable bend alignment in the absence of an electric field was developed. The condition of the polymer stabilization, the characteristics of UV‐curable monomers, and their influence on the configurations of the polymer network in the cell were studied. Possible models of the configuration were proposed and their relationship to the electro‐optical properties was analyzed using a novel simulation method considering the distribution of anchoring effects from both alignment surfaces and the polymer network. It was suggested that a good performance such as high contrast ratio and fast response could be expected in the polymer network originating from newly developed monomers composed of multifunctional LC acrylates due to a relatively weak‐anchoring effect and presumably its localization near the alignment surfaces. By using the newly developed monomers under the optimized polymer‐stabilizing process, a high contrast ratio of 250:1 and fast response nearly equal to that of a conventional OCB cell were achieved.
To stabilize the lens retardation profile for LC GRIN lens, an advanced overdriving method is proposed. This method improves the balance of electric fields generated from several lens electrodes, and reduces the degradation of retardation profile, such as a disclination line and irregular shape. It has been successfully demonstrated with a 17 inch 2D/3D display using the proposed method.F electrode Figure 4. Developed 2D/3D display with overdriving LC GRIN lens. 60.4 / S. Uehara SID 2014 DIGEST • 887
To improve the efficiency of bend transition in OCB, its anisotropy was analyzed. The transition antiparallel (opposite) to the rubbing direction was significantly fast and this anisotropy remained at low temperatures. We propose two effects of LC shear flow on the anisotropy. Based on a pixel design that takes the anisotropy into consideration, 40% reduction of the initialization voltage in a 3‐inch TFT‐LCD has been achieved.
LC GRIN lens is a significant for medical 3D display systems, because many lens functions are realized due to electrode design, LC lens mode and driving method. We introduce our development of 3D displays, such as 2D/3D partial switchable, viewing angle switchable, landscape/portrait rotatable, and flatbed/standup switchable 2D/3D displays.
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