Despite all progress during last years, a flaw of insufficient durability has been adhering to OLED displays.
Our partner RiTdisplay now presents a new generation of OLED displays with considerable improvement of operation hours by changing the composition of organic layers.
Formerly, a certain number of carriers (electrons, holes) passed through the emission layer in an unimpeded manner, without recombining and creating photons. By implementing additional blocking layers on the surfaces of emitting layer, this phenomenon is widely limited.
More excitons are formed which recombine and emit more photons. Efficiency and light yield are improved considerably. This means, to produce a certain luminance, less electrical energy is needed. Thermal stress to organic substances decreases and durability increases.
Those are the results:
| Color | Version | Duty (Number of lines) | ||
|---|---|---|---|---|
| 32 | 64 | 128 | ||
| White | formerly | 18700 h at 160 cd/ m² | 13000 h at 120 cd/ m² | 11000 h at 90 cd/ m² |
| new | 120000 h at 160 cd/ m² | 80000 h at 120 cd/ m² | 50000 h at 90 cd/ m² | |
| Yellow | formerly | 45000 h at 160 cd/ m² | 40000 h at 100 cd/ m² | 24000 h at 100 cd/ m² |
| new | 150000 h at 160 cd/ m² | 120000 h at 100 cd/ m² | 60000 h at 100 cd/ m² | |
| RGB | formerly | 12000 h at 100 cd/ m² | 10000 h at 90 cd/ m² | |
| new | 24000 h at 100 / cd/m² | 15000 h at 90 cd/ m² | ||
