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Back Light Unit

BLU

A device supplying point source LED or linear source CCFL in the form of surface illuminant on non-self-luminous LCD. It’s categorized to direct type and edge type depending on location of light source.

Comparison between direct type (diffusion plate)
and edge type (LGP) BLU
A direct type with light source under LCD panel has higher luminance than edge type and is easy to perform local dimming and a high-definition performance is optimal to premium TV such as 3D TV. It employs diffusion plate to evenly distribute the light.

What is dimming?
 
Technology to enhance shadow rate on screen by adjusting the light from light

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