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Analysis of the operation mode of reflective liquid crystal display devices with front film compensation

The front film compensated reflective liquid crystal display device was studied in normally black and normally white operation conditions using a dynamic parameter space method. The electro-optical response and reflectance spectra were also studied for different operation modes. We show that high quality normally white or normally black modes can be obtained by placing the fast axis of a quarter wave plate at 45° or 0° to the input director direction. The viewing angle characteristics of the optimum modes are wide and symmetrical.