Device and method for manufacturing optical films

Abstract

The invention relates to a device for manufacturing optical films. The device comprises a material feeding part, a first wheel, a second wheel, and at least one UV light source. The material feeding part is provided with a material discharge pipe extending along a predetermined direction. The central axis of the first wheel and the central axis of the second wheel are in the same horizontal surface and are both perpendicular to the predetermined direction. The first wheel and the second wheel are both under the material discharge pipe, and each wheel comprises a gear-type body and a mold insert surrounding the outer side of the gear-type body. The second wheel is arranged at a predetermined distance away from the first wheel to form a molding channel. Together the first wheel and the second wheel are used to press UV curable resin which flows into the molding channel. The at least one ultraviolet light source is placed inside the gear-type body. The invention also relates to a method for manufacturing optical films.

Description

technical field [0001] The invention relates to a manufacturing device of an optical film and a manufacturing method of the optical film. Background technique [0002] At present, in the manufacture of optical films, PET film is generally used as a carrier, and UV (ultraviolet) resin is coated on the surface of PET film first, and microstructure patterns are transferred on the UV resin. After the transfer is completed, the UV resin is irradiated with UV light to cure the UV resin on the surface of the PET film. First, the pattern transfer and curing are carried out separately, the process is long and the efficiency is low; second, the use of PET film as a carrier limits the further thinning of the optical film. Third, the light transmittance of the PET film itself is about 90%, so the optical film will inevitably reduce the light transmission by about 10%, resulting in poor light transmittance; moreover, the optical film is only formed on one side Microstructures that scat...

AI Technical Summary

Problems solved by technology

First, the pattern transfer and curing are carried out separately, the process is long and the efficiency is low; second, the use of PET film as the carrier limits the further thinning of the optical film

Third, the light transmittance of the PET film itself is about 90%, so the optical film will inevitably reduce the light transmission by about 10%, resulting in poor light transmittance; moreover, the optical film is only formed on one side Microstructures that scatter light, but optical films with single-sided microstructures do not guide light well

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