Abstract
In this paper, the power consumption of a white-red-green-blue
(WRGB) active-matrix organic light-emitting device (OLED) display
and the resulting temperature distribution across the display are
analyzed as a function of the applied image and the luminance of the
emitted light. It has been shown previously that temperature directly
impacts the picture quality of an OLED display. Luminance, spectral
radiance, power and temperature measurements are performed on a 55-in
WRGB OLED display with a resolution of 1920
$\times$
1080. A power model is
presented that allows calculating the display’s power consumption
for a given applied image. This involves the dependency of the efficiency
of the white OLED on the current density, the wavelength dependent
transmission of the color filters and the contribution of each of
the subpixels in producing the display’s nominal white. The
output of the power model is used as input for a basic thermal model
that simulates the temperature distribution across the display. The
thermal model is based on 3D computational fluid dynamics analysis
framework (FloEFD). A good agreement between the simulations and measurements
on the sample WRGB OLED display is obtained.
© 2015 IEEE
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