Structure Design Of Side-entry LED Light Guide Plate

  LED light guide plate surface light sources are widely used in flat panel displays, daily lighting, advertising decoration and many other fields. In the side-type light guide plate module technology, the light guide plate is the transmission medium of the light source, and the arrangement, shape and material composition of its points determine The surface illumination, uniformity and light extraction efficiency of the light guide plate. The design and manufacture of the light guide plate is one of the key technologies to realize the backlight module and large-area lighting. The commonly used edge-light backlight module uses the light guide plate to transfer the light from the side of the light source. The light guide plate is converted into a uniform light output in the front. The light guide plate can be divided into flat and wedge-shaped plates according to different shapes. According to the bottom scattering point pattern production method, it can be divided into printing type and non-printing type. Experiments show that the shape of the scattering points is right The influence of light scattering is very small, and the arrangement of dots has a great influence on the uniformity and brightness of the output light.

  The light sources of the backlight system are mainly cold cathode fluorescent lamps (CCFL) and light emitting diodes (LED). Compared with traditional light sources, LEDs have High energy efficiency, small size, long life, flexible use, no mercury pollution, good dimming performance, no flicker, low heat radiation and many other advantages. The unilateral side-entry light guide plate can reduce the design cost and production cost.