The light guide plate is a key component of backlight units

which determines efficiency and uniformity of light emission. In view of the problem of poor uniformity and low brightness of light guide plate at present

a light guide plate was designed by the optical engineering software. A design method of the microstructure with waveform slot in the edge-lighting flat light guide plate was proposed

and distribution mode and parameters of the microstructure were designed. The results show that high-performance light guide plate could be designed when the microstructure with waveform slot distributed in the light guide plate according to regular pattern

and its uniformity is more than 80%. Compared to light guide plate with dot-matrix rectangular distributed macrostructure

whose uniformity is 60%~70%

this high-performance light guide plate uniformity increased very much. When this high-performance light guide plate size in 40 ~ 60 mm scope changes

its uniformity is more than 80%.