No abstract

For a thin film (< 1 μm) encapsulation stack consisting of only 3 plasma deposited silicon nitride layers separated by a thin (< 100 nm) organic layer, a water permeation rate of below 10−5 g/m2 per day at 50 °C and 50% rH has been measured using the Ca test. PLED lifetimes of over 500 hours at 60 °C and 90% rH have been reached locally. While the Ca test indicates that pinhole free encapsulation is possible, edge and particle related defects still forecast a challenge for device encapsulation.

We present our work on the optimization of our thin film encapsulation process. Except for particle related defects, encapsulation lifetimes of over 500 hours at 60 rH. have been reached over a complete 20 first direct comparison of the luminescence decay of our TFE devices and identical glass-desiccant encapsulated devices clearly shows that lifetime of these PLED devices is no longer limited by the encapsulation method, but by the intrinsic quality of the light emitting polymers.

No abstract

A pH neutral formulation 3x to perform the in-line cleaning of resists/topcoats contaminated immersion assembly efficiently and effectively has been developed. It is environmentally benign with no halides, no individual component having a flash point above 38°C or known to cause cancer, birth defects or other reproductive harm.