Cell-thickness dependence of a liquid crystal display that consists of a combination of a conventional 90° twisted nematic cell and neutral polarizers is studied from the aspects of theoretical analysis and colorimetric experiment. From a theoretical analysis of the Poincaré sphere we show the state of elliptically polarized light after the horizontal linearly polarized light passed through the cell and the transition state of elliptically polarized light when horizontal linearly polarized incident light passes through the cell. From the colorimetric experiment, it is found that chromaticity coordinates are shifted significantly at a cell thickness of 9 μm, although above this thickness they are only slightly shifted.
© 1985 Optical Society of AmericaFull Article | PDF Article
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