A few months ago researchers from the Fraunhofer IPMS announced that they have developed semi-transparent yellow high resolution OLED microdisplays, that are significantly lighter than conventional combiner-based optical see-through near-to-eye systems.
The Fraunhofer IPMS now announced that it has managed to increase the transparency of these microdisplays to 45%.
The researchers explain that in their design OLED materials are integrated on the silicon CMOS driver, and several pixels are grouped together into a 'non-transparent cluster'. Large transparent areas are created between these clusters, and a micro-optic is placed over each cluster to combine them all into a uniform virtual image. The researcher further improved the transparent by adopting several new technologies - that allowed them to avoid OLED layers in the transparent areas, by introducing anti-reflective coating, and by redesigning the wiring.
