Display backlight and screen update

Here we present results of measurements for the backlight of the display.

 

Experiment details

Description:

Power consumption for the backlight

Place:

Indoor

Number of tests:

50

Notes:

During the measurements all the air interfaces (BT, WLAN and Cellular) are switched off.

 

 

The Figure below shows the values of power consumption of the backlight of the display for different light levels and different background colors.
The tests consist of drawing the background with one of the colors (white or black) and then switching the light on for one minute.

Power consumption of the backlight of the display for different light levels and different background colors.

 

The Figures below show values of power consumption of the backlight of the display for different light levels for a black and white background respectively.

During the tests, the screen is being updated with different speed: from 1 to 10 frame updates per second.

 

Power consumption of the backlight of a white (up) and black (down) screeen for different light levels and screen update speed.

Parametrized model

 

P[mW] = A + B + C * (fps-1)

Energy = P * Duration

 

ColorBCfps range

White

1.00E+02

1.11E+01

1-10

Black

8.17E+01

1.09E+01

1-10

 

 

Intensity A

20%

0

40%

15

60%

40

80%

80

100%

200

 

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Last update:27-05-2009