Direct backlight composite optical plate structure and manufacturing method thereof

The invention discloses a composite optical plate which can be directly fit with a light emitting source in direct backlight application. A transparent or translucent polymer resin forming plate serves as a basic material, primary optimal match and secondary optical design are adopted in the case of optical design, a screen printing process and a spray coating process or a roller coating process are used for making a composite stacked optical micro structure and an optical layer with different characteristics on the basic material in the case of manufacturing, and thus, in a state of being directly fit with the light emitting source, the structural design and the process of the composite optical plate are used for realizing a direct backlight composite optical plate with a low light mixed interval and adjustable light uniformity. The above direct backlight composite optical plate has the advantages that the brightness is high; the light mixed interval is low; thinness and light weight are realized; the light