Integrated display unit board of color LED (light emitting diode) display screen and manufacture method thereof

Abstract

The invention relates to an integrated display unit of a color LED display screen and a manufacture method thereof. The integrated display unit board of the color LED display screen comprises an LED display module and a surface cover base plate, wherein the positions of the surface cover base plate, which correspond to LED wafers of the LED display module, are provided with light outlet holes; a drive IC (integrated circuit) is welded on a drive circuit board, the back surface of a circuit board is connected with the drive circuit board through pin headers and female headers, and the LED wafers are fixed on the front surface of the circuit board; the side wall of every light outlet hole of the surface cover base plate is provided with a high-reflectance diffuse-reflection surface; and the surface cover base plate is fixed on the circuit board, and the light outlet holes of the surface cover base plate are filled with transparent colloid. Due to the high-reflectance diffuse-reflection surfaces of the side walls of the light outlet holes of the surface cover base plate, light reaching the sidewalls of the light outlet holes can be subjected to the diffuse-reflection dodging to significantly improve the light emitting uniformity of LEDs which have three colors of red, green and blue, the light energy usage rate is increased, and the heat dissipation burden is reduced. The integrated display unit board of the color LED display screen has the advantages of large visual angle, low light loss and the like.

Description

technical field [0001] The invention belongs to the technical field of LED flat panel display, and relates to a color LED display integrated display unit board and a manufacturing method thereof. Background technique [0002] In recent years, with the continuous improvement of people's viewing demand for display devices, high-end LED displays are developing towards high density. High-density LED display is generally considered to refer to a full-color LED display with a pixel pitch of less than 3mm, and its point density is greater than 111111 pixels / square meter. At present, there are two types of high-density LED display devices: surface mount (SMD) three-in-one modules and "integrated three-in-one" (ZL200720094395.1) modules. For the SMD method, on the one hand, each pixel needs to be packaged separately by high-end equipment, and the installation is more complicated, which increases the production cost; There is not much space for the layout, coupled with the requireme...

AI Technical Summary

Problems solved by technology

It can be seen that due to occlusion, the spatial consistency of the light shapes of red, green, and blue in the pixel unit becomes poor, which will greatly affect the viewing angle of the display screen

At the same time, since most of the light that reaches the side wall of the display hole is absorbed by the side wall and converted into heat energy, while causing a decrease in the utilization rate of light energy, it also increases the heat dissipation burden of the system

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