表面反射を考慮した反射型TN液晶ディスプレイのセルギャップ測定

抄録

A new cellgap measurement method is described for reflective TN-LCD (twisted-nematic liquid crystal displays). We investigated reflected-intensity behavior in cell-gap measurement, which is based on reflective polarization analysis. The surface reflection of the sample was found to have a decisive influence on the obtained cellgap value and was taken into account in the new method. The method showed good agreement with a trans-missive cellgap measurement in an experiment using a trans-missive LC cell and external reflector. We applied it to microscopic cellgap mapping using a microscope and a CCD camera system. The obtained map is consistent with the shape of the internal reflector.