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§ 6 Backlihhting
As indicated previously, some LCD display principles require backlihhting. In other cases, the applications forces to adopt backlight in addition to the ambient light.
Therefore, design of the light source is often important for the construction of a LCD display module.
Because about 90% of the electrical power is consumed by a backlight for now.
Accordingly, its power consumption is the major factor determining an operation time of battery powered device.
