IEEE Electron Device Letters · 2007 · 60 citations · 5 references
EngineeringElectrical EngineeringLighting DesignOptoelectronicsSemiconductor DevicesDisplay TechnologiesLight-emitting DiodesBias Stress EffectsDisplay ApplicationsElectrical CompensationFeedback CompensationLuminanceOrganic Light-emitting Diode DisplaysOrganic Light-emitting DiodesPixel Architecture
This letter presents a stable compensation scheme for active-matrix organic light-emitting-diode (AMOLED) displays based on the observed strong interdependence between the luminance degradation of organic light-emitting diodes (OLEDs) and its current drop under bias stress. This feedback-based compensation provides 30% improvement in luminance stability under 1600 h of accelerative stress. To employ this scheme in AMOLED displays, a new pixel circuit is presented that provides on-pixel electrical access to the OLED current without compromising the aperture ratio.
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Degradation Mechanism of Small Molecule-Based Organic Light-Emitting Devices
Hany Aziz, Zoran D. Popović, Nan‐Xing Hu et al. · Science · 1999 · 837 citations