What's Role Of The Optical Film Of The LCD Industrial Screen?

The optical film of LCD industrial screen is divided into diffuser film, brightness enhancement film and polarized brightness enhancement film. This article mainly introduces the usefulness of the optical film. The key items to consider are: gap between optical film and plastic frame, fixed position, scratch resistance, wrinkle resistance, etc.

1. The gap with the LCD screen plastic frame.

The design of the gap between the optical film and the plastic frame of the LCD screen should be considered from both the horizontal size and the vertical thickness. The transverse plane length and width direction gaps are set to take into account not only material tolerances, but also the expansion of the optical film due to environmental influences. In the thickness direction of the optical film, the dimensional changes caused by the influence of environmental humidity and temperature, the optimal combination of different films, etc. should also be considered.

2. The position is fixed.

When designing the optical film, it is also necessary to avoid the problem of looseness within the gap, so the position of the optical film should be fixed. Usually, the concave-convex bonding method is adopted, the concave part is designed on the screen plastic frame, and the convex part is designed on the optical film. In order to avoid the front-to-back or left-right reversal of the optical film in actual assembly, most of them are designed with asymmetrical anti-fool ears on the left and right or three sides of the optical film during installation to match the optical film and the plastic frame.

3. Anti-scratch.

In the vibration and impact test, if the optical film is scratched by friction and foreign objects, it will reduce the display quality of the entire LCD industrial screen product. Therefore, these issues must be considered and avoided during the design phase. In order to prevent scratches caused by friction, on the one hand, the position of the optical film must be fixed, and the optimal gap between the optical film and the LCD screen plastic frame must be established. On the other hand, it is necessary to select a scratch-resistant optical film and perform scratch-resistant treatment on the optical film.

4. Anti-wrinkle.

In the high temperature and high humidity experiment, if the optical film is wrinkled, it will reduce the display quality of the entire LCD industrial screen product. Choosing a thicker optical film can effectively reduce the occurrence of wrinkles. In addition, establishing an optimal gap between the optical film and the plastic frame can also effectively reduce the probability of wrinkling.

The above briefly introduces the matters needing attention for the optical film posting of the LCD industrial screen and its function.