Device and method for calibrating display device

A calibration device for calibrating a display device comprising:

• a light source;
• a first integrating sphere;
• a second integrating sphere;
• a filter;
• a narrowband instrument;
• and
• a wideband instrument,
• wherein the light source is provided inside the first integrating sphere, the filter is provided at an entrance port of the second integrating sphere and an exit port of the first integrating sphere;
• wherein the light rays pass through the filter and enter the second integrating sphere from the first integrating sphere;
• wherein the spectrum of the filter is equal to the spectrum of the display device divided by the spectrum of the light source;
• and
• wherein the narrowband instrument and the wideband instrument measure a color measured data based on the light rays emitted from the exit port of the second integrating sphere.

A calibration method for calibrating a display device performed by a calibration device comprising the steps of:

• a) generating a filter that the spectrum of the filter is equal to the spectrum of the display device divided by the spectrum of the light source;
• b) measuring a color measured data by a narrowband instrument and a wideband instrument after the light rays emitted passed through the filter;
• and
• c) calibrating a measured output through a calibration matrix based on the color measured data from the wideband instrument.