Algorithms for longer OLED lifetime

Accelerated Lifetime Testing of OLED Luminaires

Engineering combinatorial optimization algorithms to improve the lifetime of OLED displays

In this thesis, we consider an optimization problem arising in the design of controllers for OLED displays. Our objective is to minimize amplitude of the electrical current through the diodes which has a direct impact on the lifetime of such a display. To this end, we model this problem as an integer linear program. Subsequently, we refine this formulation by exploiting the combinatorial struct...

Novel Dual-Pulse Actuation Voltage for Longer MEMS Switch Lifetime

Abstract—A novel dual-pulse actuation voltage has been proposed to reduce dielectric charging in micro-electromechanical system (MEMS) switch, leading to a longer switch lifetime. Mathematical and transient circuit models have been utilized to simulate dielectric charging in the RF MEMS switch, enabling the analysis of charge built-up at the switch dielectric and substrate brought about by the ...

Low Power-Consumption and Long Lifetime OLED with a High Tg n-type Organic Transport Material

In this paper, we demonstrated an organic light emitting device (OLED) of low driving voltage, high current efficiency and long lifetime by using an n-type organic material as the electron transport layer (ETL). Such a layer is composed of a large alkali metal, i.e. Cesium (Cs), doped into the organic material. Cs atom is heavy and hard to diffuse into the emitting layer (EML) material that dec...

Novel Electron-Transport Materials for OLED TVs and OLED Mobile Displays

With the market for mobile AMOLED displays still increasing, both Samsung Mobile Display and LG Display have announced that OLED TVs will be commercially available in 2012. OLED TVs have different requirements compared to mobile devices and especially the lifetime has to be significantly longer in TVs. Therefore, Novaled has developed new ETL materials that lead to much longer lifetime in monoc...