High-cleanliness optical film protection method

Abstract

The invention discloses a high-cleanliness optical film protection method and belongs to the field of optical film preparation and aims to solve the problems that the surface microstructure of an optical film deforms under stress extrusion in a coil protection process and long-time storage is influenced. The method disclosed by the invention comprises the following steps: (I) covering the optical structure side of the optical film with a protective film; (II) filling a gap between the optical structure and the protective film with glue; (III) curing the filled glue so that the optical film is flat; (IV) rolling the flat optical film in a coil way; (V) when using the optical film, cutting the coil, and demoulding the cut optical film, wherein the demoulding operation comprises: tearing along the edges of the protective film and the glue, and separating the whole protective film with the cured glue from the optical structure.

Description

technical field [0001] The invention belongs to the field of optical thin film production, and relates to the protection technology during transportation and storage of optical thin films. Background technique [0002] High-cleanliness optical film has special requirements for the protection of optical film due to its fine processing and surface cleanliness at the nanometer level. The protection of optical films is required for mass production and transportation of optical films. [0003] In the existing optical film protection process, the more common way is to cover the surface of the optical film with a protective film with different viscosities (such as figure 1 shown), and then rolled up for protection in the form of coils (such as figure 2 shown). Using this protection method, under short-term storage conditions, the surface cleanliness of the optical film has little effect, but as time increases, due to uneven contact between the protective film and the optical fi...

AI Technical Summary

Problems solved by technology

[0006] 1. The microstructure of the surface of the optical film is deformed due to forced extrusion, which is not conducive to long-term storage

[0007] 2. The gap between the protective film and the surface of the optical film is prone to molecular migration, causing surface pollution and affecting the optical effect of the optical film

[0008] 3. The cost of single-chip storage is high, and the size-keeping device is large, high-cost, and difficult to transport

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