Liquid crystal displays have many good qualities, such as ultrathinness, light weight, high brightness, and so forth. It
is very important to improve the display performance of backlight module systems to provide better uniformity,
brightness, lower power consumption, and lower weight. In backlight modules, the light guide plate (LGP) is a key
component in reducing the cost and easier access to develop LGPs on its own. This research proposes the concept of
Back Light Unit (BLU) with external illuminance. This special optical design may introduce the external light into BLU
in order to improve the power-saving. One is for 14 inch monitor, which has 21% improvement. Another for 3.5 inch
display might have improvement 15%.
KEYWORDS: Light emitting diodes, Waveguides, LED backlight, Light sources and illumination, Light sources, Principal component analysis, Glasses, Light, LED lighting, LED displays
LED play the role at such the kind of modern display light source thanks to its power consumption and the most
important, outstanding colour gamut. Modern displays are required to be much thinner and thinner with best colour
gamut. We have manipulated the pattern distribution of the micro features to obtain the required optical characteristics.
A light guide plate (LGP) of 3.5 inch dimension using an LED light source is used as an example for the study of
integrated LGPs. This research designs a piece of light guide film (LGF) at the back of LGP. It may induct the exterior
light, and enables the backlight module to achieve the energy conservation. In addition, the special-designed light pipe
and freeform optics will induce external light, which will contribute 15% power savings.
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