Imaging material for fabricating rear-projection screen

Abstract

The invention provides an imaging material for fabricating a rear-projection screen, which comprises 40-80 parts of diluent, 30-60 parts of transparent varnish, 10-50 parts of a curing agent, 10-30 parts of optical microparticles, 10-30 parts of a matting agent, 5-30 parts of pigment, 5-20 parts of aluminum powders or metallic paint, 5-15 parts of light stabilizer, 5-10 parts of inorganic flame retardant and 0.2-3 parts of antioxidant. The invention also provides a method for fabricating the rear-projection screen, which comprises the following steps: (1) the imaging material is mixed uniformly and poured into a watering pot of a spray gun; (2) transparent or semitransparent plane, curve or sphere attachment is sprayed with the imaging material; and (3) a film is formed, and the final thickness of the film is 0.05mm-3mm. The imaging material and the method provided by the invention can effectively improve display brightness, visual angle and definition of the existing rear-projection screen, improve the maximum size of the rear-projection screen, and meanwhile reduce the fabricating cost of the rear-projection screen.

Description

technical field [0001] The invention relates to the technical field of projection screen manufacture and imaging, in particular to a rear projection screen, an imaging material used for manufacturing the rear projection screen, and a method for manufacturing the rear projection screen. Background technique [0002] At present, common large-screen video display devices have the following types: large-screen TVs, TV curtain walls, LED electronic display screens, plasma display devices (PDPs) and projection screens. However, large-screen TVs, TV curtain walls, LED electronic display screens, plasma display devices (PDPs) and other manufacturing processes are complex and costly, and in addition to bulky and heavy, it is more and more difficult to develop in large-screen video displays. The structure of the projection screen is the lightest, the most convenient to use, and the price is low, so it has become the fastest-growing and most widely used equipment in large-screen video ...

AI Technical Summary

Problems solved by technology

Due to the refraction and reflection of the light in the rear projection equipment (generally one or more reflectors or lenses are added to the projection light path) part of the loss, and the rear projection screen itself absorbs part, resulting in the current rear projection screens generally have image defects. Important problems such as clarity and uneven brightness of the subtitle screen have affected the quality of viewing by the audience

Especially the biggest disadvantage of the general rear projection screen: the center brightness is high, and the sun effect appears in the center of the screen. At present, even the center brightness and edge brightness uniformity of the more advanced optical projection lens are about 25% different.

However, none of these screens can achieve good unity or balance of contrast, brightness and clarity, and the display effect is not as good as that of Fresnel lens screens.

[0006] Because the existing rear projection screens have the above-mentioned many defects such as brightness, viewing angle, clarity and price, however, in many fields requiring large-scale screens, such as academic exchanges, school teaching, public information release, outdoor advertising, etc. etc., the rear projection screen plays an irreplaceable role