Abstract
The image sticking of the liquid crystal display (LCD) is related to the residual direct current voltage (RDCV) on the liquid crystal cell. The saturated residual DC voltage (SRDCV) can be obtained by analyzing the change of the capacitance of the liquid crystal cell under the application of DC bias (DCB), thus the LCD image sticking can be evaluated. Based on this, we evaluated the image sticking of the hybrid aligned nematic (HAN) liquid crystal display (HAN-LCD) with four different alignment layer materials (KPI-300B, PIA-2710, RV-961G, SE-4811(0526)) combinations of infused liquid crystal materials with negative dielectric anisotropy, from which the effect of the alignment layer material on image sticking was analyzed. The experiment found that the SRDCV measured by the HAN cell with vertical PI model SE-4811(0526) and parallel PI model PIA-2710 is the minimum under positive and negative DCB. The results show that the alignment layer material can greatly affect the image sticking problem of HAN-LCD, and provide useful guidance for improving its display quality.
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