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pvd coating machine LR anti-reflective optical film application

2021-01-21

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        The LR anti-reflective optical film of the pvd coating machine is suitable for high-end LCD TV models. LR anti-reflective optics are mainly used on large-size LCD panels such as notebook computers (NB), LCD Monitors and LCD TVs. Since these products are mostly used indoors, Therefore, the general reflectance is about 1%, which is higher than the AR type optical film. Because of this, the LR type optical film has a relatively simple structure, roughly including TAC optical film, hard coat layer, and LR layer, and the cost is also lower than AR type.


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         However, if you want to prevent collision with hard objects, or need better scratch resistance, the required hardness of the vacuum coating equipment LR type optical film will be higher, especially when discussing the work content with people, often touch the laptop or LCD with a pen Monitor screen, so the LR optical film hardness of vacuum coating equipment required for this type of product is higher. If expressed in pencil hardness, when the general LR optical film is 3H, the vacuum coater-enhanced optical film will be required to increase to 4H~5H hardness. However, the risk is that when the hardness of the optical film increases, its deformation probability increases (easy to curl ), while the thickness of the optical film also increases, which relatively increases the process difficulty and material cost.
        When it comes to LCD TV application products, there are also different functions and requirements. Therefore, the structure of the LR optical film of the vacuum coater has also changed. Especially the LR optical film for high-end LCD TV will add the AG function, which is called AGLR optical film , In addition to reducing the reflectivity, it can also prevent glare. This advantage is to increase the contrast value and make the black screen better.
        In response to the recent rise of ultra-thin LCD TVs, not only the thickness of the TV backlight module needs to be made thinner, but also the thickness of the optical film. Generally, the thickness of the TAC substrate in the LR type optical film of the pvd coating machine is 80um, which can now be reduced to 40um, which is thinner than the thickness of toilet paper, but the disadvantage is that it will reduce the scratch resistance and hardness of the optical film.
        The anti-reflective optical film of the vacuum coater may be a non-must to have component in LCD displays. However, in the future, small-size LCD panels correspond to diversified end-use products, coupled with the convenience of portability, and the time of external use will be longer. In the long run, in order to improve the visibility of LCD displays outdoors, it is expected to increase the proportion of AR optical film used in small and medium-sized LCD panels; and for large-size LCD displays, if LR optical film does not increase too much cost conditions It can improve the surface hardness, scratch resistance, and anti-glare function. It is estimated that the area used will also be increased.