Bonding method for 3D (three-dimensional) grating in naked eye 3D display screen and naked eye 3D display screen

Abstract

The invention discloses a bonding method for a 3D (three-dimensional) grating in a naked eye 3D display screen, namely surface bonding is performed by filling an optical clear adhesive (OCA) or a liquid optical clear adhesive (LOCA) between a 3D grating sheet and a liquid crystal panel. During the surface bonding process, the bonding method comprises the following steps of: (1) utilizing an optical mask plate (MASK) to set MARK and FOG MARK marks of the grating sheet to ensure the MARK consistency of the two; (2) using a bonding device to perform sampling multiple times by adopting a 3D grating sheet MARK identification and sampling way, and moving a FOG platform to capture the center position of the FOG MARK through a CCD (charge coupled device) multiple times during position correction; and (3) using the high-precision CCD to match with a direct type bonding way for attaching; and furthermore, the FOG platform and a grating platform on the bonding device can simultaneously adjust the positions. The invention further discloses the naked eye 3D display screen. According to the bonding method disclosed by the invention, the production cost can be effectively reduced by using the precision property of an existing point bonding production device, the naked eye 3D display screen can effectively avoid rainbow stripes caused by optical diffraction, the visual fatigue can be effectively eliminated, the light transmittance is high, and the power consumption of backlight of the screen can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of 3D display screens, in particular to a bonding method of 3D gratings in a naked-eye 3D display screen and a technology of the naked-eye 3D display screen. Background technique [0002] At present, most domestic naked-eye 3D technologies are in the research and development stage, and are mainly used in the industrial and commercial display market, so mass consumers have little contact with them. However, with the miniaturization of the naked-view 3D product platform and the expansion of market popularity; 3D products are gradually becoming familiar to consumers; the defects of its visual effects and the rainbow pattern caused by light diffraction itself are caused by the 3D visual directivity of 3D products. The effect is difficult to capture, and long-term use of naked-view 3D products is likely to cause visual fatigue for users; these factors have caused a decline in the market recognition of 3D prod...

AI Technical Summary

Problems solved by technology

[0004] The bonding method in the traditional industry adopts point bonding technology, which generally requires 8 to 10 points of glue. Among them, the fixture alignment method of the existing bonding equipment cannot meet the actual bonding accuracy requirements of 3D products, while foreign bonding The price of equipment is high, so the naked-eye 3D display screens produced by the bonding method of these traditional industries have the following disadvantages:

[0005] 1) When the ambient temperature and humidity change, it is easy for fog to enter the screen, resulting in poor display effect

[0006] 2) The rainbow pattern caused by light diffraction interferes with the 3D display effect, and there is obvious rainbow pattern interference when viewing the picture from different angles