A design method for dot distribution of liquid crystal display light guide plate

Abstract

The invention relates to a method for designing the grid point distribution of a liquid crystal display light guide plate. The method comprises steps of firstly calculating the illuminance distribution value of any coordinate position at the lower surface of the light guide plate; then by using the principle of energy conservation and based on the differential of the energy of any one LED light source, establishing a mapping relationship with the uniform illuminance distribution of the light-emitting surface of the light guide plate; by using an energy transfer process from the output of the LED light source energy to the emitting uniform surface light source, inversely solving the grid point distribution of the light guide plate of the energy trasnfer process; finally, establishing a functional relationship between the radius of the light guide grid points and the bottom illuminance of a light source calculation point, customizing the position coordinates of the grid point distribution, and changing the bottom illuminance of the light-emitting surface by the radius of the grid points. The method obtains the distribution of the scattering grid points of the light guide plate by theoretical calculation, reduces the number of revisions of the grid point design, and reduces development time and cost.

Description

technical field [0001] The invention relates to the field of liquid crystal backlight modules, in particular to a dot distribution design method for a liquid crystal display light guide plate. Background technique [0002] The backlight module is the core of the entire liquid crystal display system, which determines its uniformity, color saturation, color gamut, system volume and cost. In the actual system, the specifications of the light guide plate vary with the type and application of the liquid crystal display. For example, the number and specifications of LEDs used in small-sized mobile phones, medium-sized computer monitors, and large-sized TVs are different. , which requires a targeted design of the light guide plate scattering dot array. The dot distribution theory requires that the dot pattern is arranged irregularly and can satisfy any continuous filling rate distribution. [0003] At present, the more typical dot distribution theories include super-uniform distr...

AI Technical Summary

Problems solved by technology

Compared with the regular dot distribution theory, the irregular dot distribution theory can design a dot distribution with extremely high irregularity, but this kind of method is computationally intensive and difficult, and due to the complexity of optical design and the limitation In the actual dot design process, it is often necessary to use multiple methods mixedly, so the dot generation with irregular dot distribution is slow, inefficient, and difficult to operate

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