Figure 5.14 indicates the system level components contribution to the power
consumption. Note the po
wer consumed by the backlight.
There are many techniques employed to conserve energy consumed by a display
system. Ambient luminance affects the visibility of LCD TFT panels. However, by
taking account of this, backlight autoregulation [4] can also reduce the average energy
Main memory
address bus
LCD controller
136
LCD panel
380
LCD panel bus
233
Frame buffer
memory
Frame buffer memory
data bus
102
Frame buffer memory
address bus
83
Main memory data
bus
Main memory 82
Backlight
1200
CPU 32
83
9
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