Backlight board of display screen

Abstract

The invention discloses a backlight board of a display screen. The backlight board comprises a backlight board body and backlight sources used with the backlight board. The backlight board is a transparent wedge shaped board comprising a backlight face, a light emergent face and a light incident face, the light incident face is perpendicular to the light emergent face, and the backlight sources are arranged on the light incident face. The backlight board is further provided with a transparent light incident component which is a triangular prism with the cross section being an isosceles right triangle, the first right-angle face of the triangular prism is arranged to be fitted with the light incident face, a light reflection layer is arranged on the bottom face of the triangular prism, a 45-degree included angle is formed between the bottom face of the triangle prism and the light emergent face, the second right-angle face is parallel to the light emergent face, and the backlight sources are arranged on the second right-angle face. A diffuse reflection face is arranged on the backlight face of the backlight board body. The light incident component and the backlight board body are structurally integrated. The backlight board of the display screen is simple in structure and easy to produce; single-side illumination is adopted, so that the number of LEDs is greatly reduced, and cost is reduced; distance between incident points of the LEDs and the light reflection face is short, and incident lights are approximately uniform and parallel and form a uniform backlight effect on the light emergent face after reflection and diffuse reflection.

Description

technical field [0001] The invention relates to a display backlight panel. Background technique [0002] Car audio systems generally use LCD displays. Uniform LCD backlight is a kind of sensory enjoyment for consumers, and it is also a requirement of car companies. At present, due to the influence of space and structure, the industry mainly meets the uniform backlight requirements by increasing the number of LEDs and drying the pattern of the light guide plate. However, the method of increasing the number of LEDs, such as uniformly distributing LEDs on both sides or densely arranging LEDs on one side, can better solve the problem of LCD backlight uniformity, but the cost is too high. However, the method of using a small amount of LED+backlight board to print the pattern, because the current lighting simulation technology is not mature enough, and there is no complete theoretical system support, it can only pass the continuous test of the pattern, it is difficult to achieve ...

AI Technical Summary

Problems solved by technology

The method of increasing the number of LEDs, such as using LEDs evenly distributed on both sides or densely arranged on one side, can solve the problem of LCD backlight uniformity, but the cost is too high

However, the method of using a small amount of LED+backlight board to print the pattern, because the current lighting simulation technology is not mature enough, and there is no complete theoretical system support, it can only pass the continuous test of the pattern, it is difficult to achieve the ideal state, and the development cycle is long, the mold cost high

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