Roll-to-roll preparation method of contrast refined film

Abstract

The invention provides a roll-to-roll preparation method of a contrast refined film. The method comprises the steps of: designing and simulating a contrast refined film; carving out a wedge-shaped microstructure roller with the designed structure and size; carrying out surface processing on a PET base film coiled material, and then carrying out precise coating with optical microstructure function layer resin; carrying out semi-solidifying on the optical microstructure function layer resin, carrying out demoulding, deeply solidifying the basically-shaped optical microstructure function layer resin after demoulding, and solidifying the optical microstructure function layer resin into a film; precisely coating a optical microstructure function layer after film formation by solidifying with absorbing layer resin, and solidifying the absorbing layer resin into a film; and precisely coating an absorbing layer after film formation by solidifying with protection layer resin, and solidifying the protection layer resin into a film. The roll-to-roll preparation method of the contrast refined film has the advantages that a press roller facilitates demoulding, the size accuracy of the wedge-shaped microstructure is high, the yield is high, the operation is convenient, safety and reliability are realized, the method is economic and environmental-friendly, and large-scale batch production can be easily realized.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a roll-to-roll preparation method of a functional film for improving bright room contrast. Background technique [0002] Flexible display is currently a research hotspot in display technology, widely used in communication, media and other fields, mainly including organic light-emitting diode (OLED), flexible liquid crystal (Flexible-LCD), electronic paper (EPD), etc., among which OLED is simple in structure, It has become the most promising full-color flexible display technology for industrialization due to its thinness and lightness. However, due to the simple structure of the OLED film layer and the lack of polarizers for liquid crystal display, the external light source will be reflected on the film layer surface of the display device, resulting in a significant decrease in contrast and affecting the display effect. As an active light-emitting display technology, outdoo...

AI Technical Summary

Problems solved by technology

The main problems existing in the existing CRF are poor flexibility, difficulty in forming, and low transmittance. The depth of the microstructure of the CRF film layer is 70-200 μm. Considering the thickness of the white coating and the thickness of the base film, the total thickness can be The thickness reaches 200-300 μm, which is not suitable for flexible display; the depth of the microstructure of the film layer is too large, which makes it difficult to release the mold during the embossing process, resulting in a low yield rate, which is also the reason for the high cost of the film layer; the existing CRF uses The absorption of ambient light by the black coating improves the contrast of the bright room, which will inevitably lead to the absorption of the display luminescence. Although the transmittance of the display luminescence can be improved within a certain angle by controlling the depth, pitch, shielding angle and size of the black microstructure, But the transmittance is still low

Images