Back-projection optical-fiber screen display and its manufacturing method

Abstract

The display comprises case, projector, reflector, circuit board and accessories. Screen made from optical fiber is installed on the case. Structure of the screen is as following: plastic optical fiber at 70-190deg.C and glass optical fiber in softening state at 600-1400deg.C are arranged as column of optical fiber. Tight compactive optical fibers are arranged in parallel. Circular section of optical fibers is changed to adaptive shape. Rough board of screen is obtained by cutting the column of optical fiber along direction perpendicular to axial direction of optical fiber to pieces. In rough board of screen, each optical fiber is contacted with no gap. Treating surface of rough board of screen obtains screen of optical fiber.

Description

Technical field [0001] The invention relates to a display, and is a rear projection fiber-optic screen display and a manufacturing method thereof. Background technique [0002] The screen is made of optical fiber to make a rear-projection optical fiber display. The performance of this display is better than the widely used rear-projection large-screen color TV, a TV curtain wall arranged by a set of cathode-ray tube displays, and a light-emitting diode. The large screen and the rear projection curtain wall using the Fresnel lens as the screen, but their shortcomings are also obvious: the display of the magnified rear projection screen, because the image of the same pixel is enlarged, the image definition is correspondingly reduced, so the close The image is rough and fuzzy when viewed from a distance; the surface hot-melt rear projection screen display, because a large number of optical fibers are bundled into a fiber bundle cuboid, and then cut into the cross-sectional direction...

AI Technical Summary

Problems solved by technology

[0002] The screen is made of optical fiber to make a rear projection optical fiber display. The performance of this display is better than that of the widely used rear projection large-screen color TV, the TV curtain wall arranged by a group of cathode ray tube displays, and the light-emitting diode. Large screens and rear projection curtain walls using Fresnel lenses as screens, but their shortcomings are also more obvious: the display of the enlarged rear projection screen, because the image of the same pixel is enlarged, the image clarity is correspondingly reduced, so the near When viewed from a distance, the image is rough and blurred; the surface hot-melt rear projection screen display, because a large number of optical fibers are bundled into a cuboid of optical fiber bundles, and then cut along the transverse direction of the optical fiber by a thermal cutting method along the cross-sectional direction of the optical fiber. The screen board is fixed with a frame around the screen board, and the cross-section of the optical fiber is bonded by the optical fiber liquid during hot melting, so the process cannot guarantee that the optical fiber is arranged in parallel and neatly, and it is difficult to correspond to the pixel points of the input end and the pixel points of the output end, which cannot meet the planar type. The optical fiber layer screen has the most basic technical requirements for the parallel and neat arrangement of optical fibers. At the same time, because there is only random bonding at the cross-section of the optical fibers, the surface density is uneven, the screen lacks integrity, and the mechanical strength is poor. The display of this screen cannot be used. ; Adhesive rear projection screen display, because there are a lot of air bubbles in the screen, the screen quality is poor, and at the same time, it will also cause stress concentration in the screen, and the screen is prone to cracking, resulting in a high defective rate and making it difficult to realize the application of the display Wait

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