Splicing display system

Abstract

The invention discloses a splicing display system, comprising: a plurality of mutually spliced back projection units, wherein a splicing joint exists between two adjacent back projection units; each rear projection unit comprises a projector and a screen assembly, wherein the screen assembly comprises a Fresnel lens and a rear projection screen, and two adjacent Fresnel lenses are spliced with each other; the projector projects light beyond the range of the display image of the rear projection screen and beyond a part of the light projected onto the side of the screen assembly. The side surfaces of each Fresnel lens which are spliced with each other are provided with tangent angles; also included is an adaptive adjustment device for detecting changes in ambient temperature and automatically adjusting the size of a projector projection picture according to a preset program. The range of light emitted by the projector in the application is enlarged compared with the prior art, and part of the light can enter into the splice joint through the side of the screen assembly, and then is emitted from the front of the rear projection screen, so that the splice black line is completely eliminated, and the best effect of eliminating the black line can be maintained when the temperature is changed.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a splicing display system. Background technique [0002] The rear projection splicing wall is a professional display application. It adopts a modular display unit structure, which can easily and conveniently splice multiple image units together to achieve ultra-large screen and ultra-high-resolution image display. At present, although the image stitching of the existing unitized mosaic wall has been made very small, less than one pixel of the image, and there is almost no image loss, there are still obvious stitching seams between adjacent units, and the display screen is visually There are obvious black line divisions on the screen, which affects the integrity of the image, and the panoramic integrated display effect of seamless stitching technology cannot be achieved. [0003] Such as figure 1 As shown, a common splicing display system is composed of a plurality of rear proj...

AI Technical Summary

Problems solved by technology

Since there is no light to reach the splicing gap 12, a black line is formed at the splicing gap 12, resulting in the image segmentation phenomenon; When the temperature is affected, the size of the material changes regularly, that is to say, when the temperature changes, the splicing seam 12 will also change accordingly, resulting in poor image display effect

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