Fay Sharpe LLP
Backlight module and display device
A backlight module and display device are provided. The backlight module includes: a light source module including a transparent block, a light source and a first grating group, and a light emergent module including a light guide plate and a second grating group. The light source emits initial lights to the first grating group which diffracts initial into first diffracted lights, and transmits first diffracted lights in light guide plate to second grating group; the second grating group diffracts the first diffracted lights into second diffracted lights, and enables the second diffracted lights to be emergent from backlight module. When an included angle between initial lights and side surface of light guide plate is greater than 0°, an angle between second diffracted lights and side surface is smaller than an angle between initial lights and side surface, thereby improving collimation degree of lights emergent from backlight module.
BOE TECHNOLOGY GROUP CO., LTD
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Xianqin Jifeng Wei Xiandong Jian Xiaochuan
Meng Tan Wang Meng Gao Chen