Large physically-seamless display screen

Abstract

The invention discloses a large physically-seamless display screen, which comprises a frame, a rear projection screen and projectors. The rear projection screen is fixed in front of the frame. A plurality of adjacent latticed light path correction frames are attached to the back of the rear projection screen. The front ends of cross sections of adjacent parts of each latticed light path correction frame form an arrowhead shape respectively. The tip part of the arrowhead shape is attached to the rear projection screen. The rear part of each light path correction frame is provided with the projector. The areas of images projected by each projector are the same as those of inner edges of each light path correction frames. A plurality of projectors are connected by connecting wires and an image controller. Each projector can be arranged on a plane parallel to the bottom end face of the light path correction frame. Reflecting mirrors are also arranged on the frame on the rear parts of each light path correction frame. Light rays projected by the projectors are reflected to the rear projection screen between the inner edges of every two adjacent light path correction frames by the reflecting mirrors. The large physically-seamless display screen has high reliability, good image display effects and low manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of ultra-large-screen display equipment, in particular to a super-large-screen display screen without physical gaps that uses rear projection technology to combine images projected by multiple projectors into a complete image. Background technique [0002] In recent years, with the rapid development of the economy, the demand for various information has also increased rapidly, making users in various fields such as: quality supervision, inspection and quarantine, taxation, urban security, emergency command, environmental protection, subway, railway, highway, aviation, entertainment The amount of information that needs to be displayed and monitored in clubs, large enterprises, universities, and remote conference rooms is increasing, so there is an increasing demand for large-screen display equipment. [0003] Early super-large-screen display devices used multiple small monitors or small-sized TVs to stack up,...

AI Technical Summary

Problems solved by technology

[0003] Early super-large-screen display devices used multiple small monitors or small-sized TVs to stack up, and then applied splicing technology to realize the splicing of the images to form a brick-packed super-large-screen display wall. However, the image of this display wall is severely divided, and the visual effect Not good, and it is bulky and has a short lifespan, which is far from meeting the needs of the market

[0004] With the advancement of science and technology, many kinds of splicing display walls have appeared on the market, such as LCD technology splicing display walls, plasma technology splicing display walls, and rear projection technology splicing display walls. The common problem of them is that splicing seams are difficult to achieve satisfactory results. , and the stitching seam will change over time, and the maintenance cost of the stitching seam is relatively high

[0005] On January 12, 2011, a Chinese utility model patent with the patent number ZL201020146973.3 and the title "A Super-Large Screen Seamless Display Curtain Wall" was published. The main technical solution is to use a cabinet, and a piece of For the rear projection screen, multiple projectors are installed at the rear of the box, and then the edge fusion projection splicing software and control software are used to partially overlap the images projected by adjacent projectors, so that the entire display wall has no splicing gaps visually, but This technical solution also has the following problems. One is that there should be no support behind the entire rear projection screen. When the size of the rear projection screen is large, the rear projection screen will shake, causing the images in the overlapping parts to be distorted and distorted. The second is that there are overlapping parts of the images, and the transition of bright spots in the overlapping parts will be uneven, which will affect the resolution of the image. The area is less than the sum of the effective projection areas of each projector, which increases the manufacturing cost

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