Display: spot measurements

Both large and small size displays can encounter variation in colour, luminance and flicker as a result of variations in production processes. Filtering or adjusting these optical characteristics early on in the production line saves time and increases yield and customer satisfaction. To ensure the end-product quality is up to a high standard it is advisable to test displays at several stages during the production process. Typical display tests include:

Colour analysis, to ensure uniformity of colour reproduction of displays. Flicker, testing and adjusting flicker supporting contrast min/max, contrast RMS, JEITA, VESA methods. White point, adjusting white on displays in production settings. Response time to determine a display’s reaction speed.

The table below gives an overview of different display measurements and corresponding measurement devices.

Display
 HyperionMSE RheaHeraCronusAsteria
 Colour analysisXXXXX 
 Flicker analysisXX  XX
 White point adjustmentXXXXX 
 Contrast ratio analysisXXXXXX
 Response time analysisXX  XX
 Spectral analysis  XXX 

For larger displays multiple spot measurements are often used. To control several measurement devices simultaneously a Medusa Device controller can be used.