Automated Visual Inspection and Correction (Demura) of OLED Displays

Tech Note

The Radiant Vision Systems solution for OLED inspection and correction helps manufacturers of OLED devices improve product quality and yield. A ProMetric® imaging colorimeter or photometer provides the high optical resolution necessary to measure OLED displays on the pixel and sub-pixel level. With TrueTest™ analysis software, these measurements can be used to correct individual display pixels. This process, referred to as “demura,” adjusts the luminance and/or chromaticity of each OLED pixel to produce displays with an entirely uniform appearance.

In this technical note, you will learn:

  • Methods for measuring luminance and chromaticity of all pixels in high-resolution OLED displays
  • System for quantifying the exact correction coefficients to address pixel-level non-uniformity
  • Demura method for adjusting pixel luminance values
  • Adaptable solutions for various OLED pentile structures, moiré patterns, and gamma inconsistency

 

Download Now