LG 60PK990 Owner's Manual page 206

PICTURE CONTROL
• Benefits of using Backlight
(LCD TV/LED LCD TV only)
- The electricity consumption is reduced by up to 60 %.
- The black brightness is reduced. (As the black has greater depth, you can enjoy a better quality
definition.)
- You can adjust brightness with maintaining original signal resolution.
NOTE
►You cannot adjust colour, sharpness and tint in the RGB-PC/HDMI-PC mode.
► When the Expert 1/2 is selected, you can select Backlight, Contrast, Brightness, H Sharpness,
V Sharpness , Colour or Tint.
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