We demonstrated a 42% luminance enhancement by attaching MLF (Micro Lens Film) on the bottom emitting
OLED. Higher density of MLF extracted more substrate mode to air. We also investigated the compatibility of
MLF and Circular Polarizer (CP) on the bottom emitting OLED. It is found that the efficiency of bottom emitting
OLED with MLF and CP decreases comparing to the reference OLED device, which has CP alone. Simulation
shows that large portion of light is reflected back into CP at the surface of MLF and air. Back reflected light
from MLF is absorbed in CP layer. We have also shown that OLED blur image be enhanced by reducing
substrate thickness.
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