Display device and means to improve luminance uniformity

Abstract

A method and sensor system and software are described for use of at least two sensors for detecting a property such as the intensity, colour and/or colour point of light emitted from at least two display areas of a display device into the viewing angle of said display device, e.g. for real-time measurements, while the display is in use, and off-line measurements, namely when the normal display functionality is interrupted, with a high signal to noise ratio and a reduced amount of observed non-uniformities in the luminance. The sensors are substantially transparent. The entire area of the display is used for the measurements, which is the result of combining the contribution of the backlight and the panel, that both can exhibit luminance non-uniformities.

Dependencies are inferred from the claim text.