6 October 2005 Liquid crystals displays: the visualization problems with the observation under sun illumination
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In our work the influence of the external light on the optical parameter of a twisted nematic (TN) display for transmissive and reflective modes are being analyzed. The numerical calculation of contrast ratio (CR) and luminance such the display are presented. Next, the computer optimization procedure for the reflective mode of a display is carried out. Thanks to these results the possibilities of the reflective mode of LCD are described. The influence of display elements on the display optical parameters are shown, and the way of the optimization are presented. The development of liquid crystal display (LCD) is very big in the last years. The quantity of produced displays is rising every year and their quality has improved. Because of the high resolution of displays and their electro-optical parameters they can be used in many applications. Unfortunately, despite these advantages these kind of a display has also some disadvantages. One of them is the fact that the LCDs are very sensitive on external light. This light can even, in some circumstance completely "blind" the display.
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Jerzy Zieliński, Jerzy Zieliński, Marek Olifierczuk, Marek Olifierczuk, "Liquid crystals displays: the visualization problems with the observation under sun illumination", Proc. SPIE 5947, Liquid Crystals: Optics and Applications, 59470V (6 October 2005); doi: 10.1117/12.621356; https://doi.org/10.1117/12.621356


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