New display metrology software characterizes defects

FEBRUARY 4--Radiant Imaging (www.rading.com) ProMetric 7.0 software provides display manufacturers with tools to replace subjective visual inspection methods, now commonly used throughout the industry, with automated techniques that are objective and repeatable. ProMetric 7.0 contains a suite of standard algorithms to enable automated identification of Mura Defects, such as pixel, blemish, and line defects, and can deliver quantitative data on luminance, irradiance, and chromaticity characteristics. The software is intended for producers and component suppliers of emitting, reflecting, and projected displays, such as OLEDs, LCDs, PDPs, and CRTs. It is compatible with Radiant Imaging's PM Series light and color measurement systems.

Other features in ProMetric 7.0 are an Image Processing Toolbox that enables users to develop custom routines, and a comprehensive set of ActiveX functions to allow for full testing automation. ProMetric 7.0 also introduces a stray light correction calibration method that improves accuracy when performing contrast ratio measurements of displays, area illumination measurement, and illumination system beam pattern analysis. In addition, exposure control has been enhanced to provide more flexibility when performing user-defined measurements with custom filters.