Microdisplays with ever smaller components are currently being developed for use in the next generation of displays.
As component geometries shrink, it is becoming increasingly difficult to accurately measure colour and intensity variations on these displays with standard metrology tools to the degree of spatial resolution required.
With this in mind, 308 FPD spectrophotometers have been developed to be capable of measuring and comparing the spectral output, intensity and colour consistency of each microscopic pixel of even the smallest microdisplays.
When connected to an appropriate microscope or probe station, these spectrophotometers can be used to compare pixels on microdisplays for consistency, or to generate maps of both the intensity and colour for each device.
As these instruments can acquire spectra on the order of a few milliseconds, entire microdisplays can be mapped quickly and accurately. This ensures both the colour and intensity will be consistent across the entire device as well as from device to device.