Roll-to-roll preparation method of contrast refined film

A bright-room contrast and functional film technology, which is applied to devices, optics, instruments, etc. for coating liquid on the surface, can solve the problems of unsuitable flexible display, high cost of film layers, and difficulty in forming, and achieves easy mass production on a large scale. , Easy to operate, high yield rate

Active Publication Date: 2016-07-27
BEICHUAN RUIHUI SCI & TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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 proc

Method used

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  • Roll-to-roll preparation method of contrast refined film

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preparation example Construction

[0018] Such as figure 1 as shown, figure 1 It is a flow chart of the roll-to-roll preparation method of the bright room contrast-enhancing functional film of the present invention. Take the following steps:

[0019] (1) The microstructure is designed and simulated by ray tracing method, the size parameters of the microstructure and the optical characteristic parameters of the material are determined, and a wedge-shaped microstructure arranged in parallel is designed, which is composed of four layers, and the substrate is PET film, sequentially from the substrate upward It is the optical microstructure functional layer, absorbing layer and protective layer;

[0020] ⑵Using precision diamond machining equipment to carve wedge-shaped microstructure rollers with designed structure and size;

[0021] (3) Surface treatment is carried out on the PET base film coil, and then the optical microstructure functional layer resin is precisely coated, and the designed wedge-shaped microst...

Embodiment 1

[0028] ⑴Using the ray tracing method, a new type of bright room contrast-enhancing functional film with a wedge-shaped microstructure is designed, which consists of four layers. The base material is PET film. .

[0029] ⑵ Using precision diamond machining equipment to carve wedge-shaped microstructure rollers.

[0030] (3) The PET base film (thickness 100 μm, light transmittance 91%) is surface-treated, and then precisely coated with 15 μm thick optical microstructure functional layer resin (refractive index 1.35, light transmittance 93%), with a wedge-shaped microstructure The roller imprints the designed parallel wedge-shaped microstructures.

[0031] ⑷First control the light distance to 20cm and the intensity to 200mV / cm 2 , The curing time is 5s, so that the optical microstructure functional layer resin is semi-cured; for the optical microstructure functional layer resin that has been basically formed after demoulding, control the light distance to 20cm and the intensity...

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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...

Claims

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Application Information

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IPC IPC(8): G02B1/10G02B1/14G02B1/118G02B1/12B05D7/04B05D7/00
CPCB05D3/067B05D7/04B05D7/586G02B1/10G02B1/118G02B1/12G02B1/14
Inventor 朱焰焰郑杰陈士冰徐刚马苹苹张敏芳
Owner BEICHUAN RUIHUI SCI & TECH CO LTD
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