Air-block structure

Abstract

The air resistance structure comprises the base, polyvinyl alcohol or polymer film formed on the plastic film, and the compound film or vinyl chloride-acetate copolymer formed by the said polyvinyl alcohol or polymer film.

Description

technical field [0001] The invention relates to a gas barrier structure, in particular to a gas barrier structure applied to a flexible display. Background technique [0002] Using optical-grade flexible plastic substrates to replace the existing glass substrate materials to make flexible plastic displays can achieve the characteristics of lightness, portability, wearable, curved surface display, unbreakable, impact resistance and windability, and has become the future development of displays. mainstream. However, the display itself is very sensitive to water vapor and oxygen. Water vapor will affect the signal transmission characteristics of the display components, which will seriously cause a short circuit and make it inoperable. Oxygen will accelerate the oxidation and cracking of display materials and shorten the service life. Existing flexible plastic substrate materials are not as good as glass substrates in terms of water vapor and oxygen barrier properties. Therefor...

AI Technical Summary

Problems solved by technology

However, for pure inorganic materials, although it is a good gas barrier material, its adhesion to the plastic substrate material is poor, and it is prone to cracking during bending

And the dry process equipment and manufacturing costs are higher than the wet process

For pure organic materials PVDC and Topas, its adhesion is not good

[0005] country do not patent number patent name technical focus lack of technology nice country 4,684,573 High Oxygen barrier Composite 1. Utilize A / B / C / D at least Four layers to block oxygen function of 2. Among them, layers A and B are tables Surface layer, B and C are the main gas barrier layer 3. The material of layer B is vinyl alcohol Copolymer, C layer material is Vinyl chloride copolymer 1. A multi-layer structure is required to achieve Oxygen barrier function 2. The process is time-consuming 3. Thick 4. Food preservation nice country 2004 / 0033379A1 Low Permeability Materials and Coatings 1. Utilize the three-tier structure PVDC / terpolymer / To pas / terpolymer / PVDC 2. Using PVDC with Topas terpolymer increase plus its bonding 1. PVDC and Topas poor adhesion 2. Development of terpolymers (terpolymer) and coating (coating) increased to cost, reduce the excellent rate nice country 2004 / 0209126A1 o 2 and H 2 o barrier Material 1. Use aluminum or silicon oxide 2. Ion-assisted vacuum deposition product method 1. Pure inorganic material bending prone to cracking 2. Inorganic materials and plastics Substrate adhesion is poor 3. Process equipment and cost high nice country 2003 / 0203210A1 barrier Coating and Methods of Making Same 1. Using organic layer / inorganic Eight layers in total 2. The inorganic layer includes aluminum or oxygen silicon oxide, the organic layer includes Acrlyated-based 3. Ion-assisted vacuum deposition product method 1. Inorganic materials are easy to bend Cracks 2. Inorganic materials and plastics Substrate adhesion is poor 3. Process equipment and cost high

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