If the light guide plate is only a plane, without the structure of guide posts and various retaining walls, and the thickness is more than 2MM, it can generally be made by cutting the acrylic plate, and then screen printing the dots on it. The cutting methods include mechanical cutting and laser cutting. cut. In this way, the uniformity of light output can be adjusted relatively quickly, the cost of injection molding can be saved, and the optical film can be quickly attached. The light source in this way generally adopts plug-in lamp (2x3x4mm square lamp). If there are positioning structures such as guide columns and retaining walls on the light guide plate, the light guide plate needs to be produced by an injection mold. The mold core is generally made of S136 steel, and the surface needs to be polished. or sandblasted. The service life of a mold core is about 300,000 to 500,000 times. The optical modules matched with this light guide plate are generally produced by die-cutting, the production efficiency of the backlight source is low, and the product repeatability is high.
Post time: Mar-20-2024