Light control film / Privacy film

Briefing 

The light control film is usually attached to the surface of a display or placed on the back of a display to control the direction of image projection or limit the display range for the purpose of obtaining privacy or suppressing stray light from the display. In recent years, due to the popularity of personalized displays and the growth of the automotive display market, the demand for light control films has been increasing daily, driven by the rise of personal privacy awareness and the demand for driving safety.

The principle of light control film is mainly to use a structure similar to a blinds to control the direction and range of light propagation. Taking a blinds as an example, the wider the blade of the blinds and the narrower the interval between the blades, the light will be limited to a very small field of view and will not diverge at a large angle. If it is placed in front of the display, only the screen can be seen when facing it. If it is not facing the screen, the image will be blocked by the blinds and cannot be viewed, thus protecting the privacy of the display content.

By controlling the width, tilt angle, and spacing of the blinds, the direction of light propagation can be controlled. However, miniaturizing the blinds' structure and forming it on a thin film to make it lightweight, small, and cover all types of displays is a great process challenge. The greater the difficulty in manufacturing technology, the smaller the image field of view can be achieved for maximum privacy protection.

Our company has been working on micro-structure process technology for many years, mastering the mold and coating process technology of light control film, and can provide various customized light control film products to the market.

Portable LCD / OLED devices privacy film 

Recently, due to the trend of intelligentization in automobiles, the number of display components inside the car is increasing, gradually replacing traditional instruments. These emerging car displays, whether they are LCD or OLED, are high-brightness displays. During driving, the light and shadow of the images will form dazzling reflections or scattered light on the windshield or even the car window glass, especially at night, which can cause eye fatigue for the driver and even affect driving safety. Therefore, it is urgent to develop a solution to control the light interference caused by these increasing car displays.

Light control films can effectively solve the problem of light interference inside the car and have started to be used in car displays. Currently, there are many solutions and designs available in the market to fit various car display architectures. In principle, car light control films also use a small louvered film structure to control the direction of light projection, avoiding the position of the glass to avoid visual interference for the driver. The tilt and spacing of the louvers can be adjusted according to the needs to meet the requirements of various car designs.

Light control film on in/on the  car display could keep driver's vision away from the disturbing of image reflection and glare from the display