LCD Illumination and Power Consumption (Windows Embedded CE 6.0)
1/5/2010
Bright displays are common on many devices, and the corresponding increase in number of backlight or frontlight LEDs can lead to high power consumption.
For example, suppose a PDA device has an idle power consumptionof 90mA, not including LCD lighting. In this case, an 80mA frontlight that draws approximately 300mW of power would reduce battery life by almost 50%.
To reduce power consumption, minimize the amount of time the LCD must be illuminated, and minimize (or provide configurable settings) that control the brightness of the illumination.