LED display device

Abstract

The invention relates to the field of display screens, in particular to an LED display device. The LED display device comprises an LED display screen, a lens array I and a lens array II are sequentially arranged in the front of the LED display screen, and an LED pixel on the LED display screen transmits through the lens array I and the lens array II to form a vertical enlarged image. According to the LED display device, the surface of the LED display screen is covered with the lens array I and the lens array II, the LED pixel is enlarged by the joint effect of the lens array I and the lens array II, and non-luminance gaps between pixels are removed, so that the moire fringe phenomenon between a CCD or CMOS sensor pixel and the LED pixel caused by an included angle when the LED screen is shot by a camera or other digital products is removed, and meanwhile visual image quality and display definition are ensured.

Description

technical field [0001] The present invention relates to the field of display screens, and more specifically, to an LED display device. Background technique [0002] LED (Light Emitting Diode) is a light-emitting diode. Its core part is the PN junction of semiconductor materials. Under the action of forward voltage, electrons are injected from the N region into the P region, and holes are injected from the P region into the N region. Carriers and majority carriers recombine to emit light. [0003] In recent years, with the continuous development of LED packaging and epitaxial wafer technology, coupled with its advantages of energy saving and environmental protection, long service life, high brightness, rich colors, etc., LED large-screen display walls have been widely used, whether in outdoor busy streets Large LED screen display walls can be seen everywhere in squares, indoor performing arts centers or exhibition venues, live news studios and variety show recording sites. ...

AI Technical Summary

Problems solved by technology

[0007] For example, one solution is to fix an optical curtain in front of the display unit board, cover the optical curtain with a coating of diffusing particles, and use the coating of diffusing particles to achieve light amplification and diffusion, but this method only relies on scattering particles to achieve light amplification and diffusion , in order to eliminate the Moiré fringe potential, the scattering particles must strengthen the scattering degree, which causes a large loss of light energy and has a great impact on the imaging quality, resulting in low resolution and poor visual perception. Streaks also cause a reduction in image quality

[0008] Another solution is to set an optical lens film on the surface of the display screen, and use the evenly covered bead lens on the optical lens film to enlarge and display the LED pixels. However, the size of the bead lens is small. Due to the process, the distribution is uniform but It is also relatively random, and cannot be well combined with LED pixels, which directly causes poor image quality

[0009] Another solution is to directly set a convex lens on the display substrate, and use the convex lens to enlarge a single pixel. This solution is to use a convex lens to enlarge a pixel. The aberration of the formed image is large, and the optical uniformity of the display screen is also low. poor

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