In the material composition of the LCD back light, diffusion film almost is one of the indispensable materials.
Diffusion film according to the classification methods of making, coating type and the coating type two kinds.
The coating type diffusion membrane with high light transmittance, haze the adjusting range is big, good appearance quality, the spread of the back light for high-end products membrane preferred varieties.
Diffusion film according to the form, which has two kinds of coil and sheet stock.
This article only introduce coil coating type diffusion membrane (
Hereinafter referred to as diffusion film)
The production technology.
According to the survey, the personage inside course of study understanding of diffusion film is divided into three levels: users as the first level, the cutting for the second level, third level for coating.
The most people know about the first two levels is more, diffusion film coating, with high technical content, capital investment, high production efficiency, economic benefit is very considerable.
So some people always want to dabble in domestic and we can't easily.
The diffusion of membrane structure on the market the same, diffused layer from top to bottom, respectively is: -
The base -
The isolation layer.
Special point has, at the bottom of the back light with the light diffusion layer spread in the base material and each has a layer of film, the diffusion layer below the general also has the adhesive layer.
Base material is usually high transparent PET film, the thickness of 25, 50, 75, 100, 38, 125, 150, 188, um several specifications.
Diffusion layer is made up of dry coating on the substrate of attachments, is the most key part of the diffusion of membrane.
The third level can also be called mother volume production.
The main diffusion membrane manufacturers are currently in the world today is mainly spread in the world film manufacturers have at present mainly spread in the world film manufacturers have now mainly diffusion membrane manufacturer in the world are: Japan, hui and, intellectual semiconductor and KIMOTO;
South Korea SKC, new and and the Korea;
China's Taiwan province changxing chemical, XuanMao science and technology, new skills and adai anylink edges, etc. ;
Domestic at present is still in its infancy, no bulk supply manufacturers.
A plain film co. , LTD has the most complete range of thin film applications cover all walks of life, traders and manufacturers are interested, welcome to the consultation and order.