D08200 - SEMI D82 - Test Method for Viewing Angle of Flat Panel Displays

The viewing angle characteristic of display panel is one of the most important optical performance relevant to viewing directional image quality.   Viewing angle means the maximum angle at which a display is viewable with acceptable visual performance according to the specified viewing angle threshold.   This Standard introduces how to calculate and decide viewing angles for the viewing directional performance of flat panel displays which are viewing angles related to tone reproduction and color reproduction as well as conventional contrast viewing angle.   Test methods with new viewing angle thresholds are suggested which decides the viewing angle of displays based on the variation of gray scale and chromaticity as well as half-luminance and half-contrast under the darkroom condition. This Standard is applicable to test viewing angle of flat panel displays such as TV and monitor under the darkroom.   The scope of the term ‘viewing angle’ is related to acceptable visual perf