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Optical grade polyester film has excellent optical properties such as low haze and high light transmittance, high surface finish and small thickness tolerance. It is mainly used for diffusion film, brightness enhancement film, reflective film and antistatic protection in high-end liquid crystal display equipment. In the fields of films, protective films in touch screens, and films for flexible displays. Among the raw materials in the upstream of the liquid crystal panel, the optical film is used in the backlight module, the polarizer, and the liquid crystal material.

Demand trend of optical film in liquid crystal display panel

Liquid crystal display is currently the mainstream flat panel display technology, widely used in LCD TVs, notebook computers, monitors and mobile phones. In the entire TFT-LCD production process, the total required area of the optical film is about 15-20 times that of the panel, and the cost accounts for about 15-20% of the liquid crystal panel. China is becoming the world's largest producer of flat panel display equipment. At the same time, the explosive growth of the domestic touch screen industry has led to a rapid increase in the demand for optical films. Optical film has become one of the most important strategic raw materials for the front end of the optoelectronic industry chain.

The demand for optical film in color TV

The monitoring data shows that the output of color TV sets in China has increased from 76.73 million units in 2004 to 137.708 million units in 2012. In 2013, the output of color TV sets in China exceeded 140 million units, a year-on-year increase of 0.4%.