Composite Films

Composite Films

Composite films integrate two or more optical functional layers into a single substrate, significantly enhancing superior performance unattainable by single-layer films. Designed to manipulate light in specific ways, these films have revolutionized industries such as display technology, automotive lighting and photonic devices. Alfa Chemistry has become a leading supplier in the development and production of high-performance optical composite films with specialized optical knowledge and extensive practical experience. We are committed to providing our customers with a broad portfolio of products to meet the needs of different industries.

Major Types

Based on the compositional variations of optical film layers within composite films, these films can be further classified into various types. Three common types are described below:

• Diffusion-on-Prism (DOP) Composite Film

The DOP composite film is one of the most advanced types of optical composite films, combining the diffusion properties of diffuser films with the directional control of prism structures. The diffusion component disperses light across a wide area, while the prism structure directs the light in specific angles, improving the light uniformity and enhancing brightness efficiency in devices like liquid crystal displays (LCDs) and light-emitting diode (LED) panels.

• Prism-on-Prism (POP) Composite Film

POP composite film uses two layers of prisms, usually oriented in different directions, to control and manipulate light. The unique arrangement of prisms in the POP films allows for the enhancement of optical effects, including light redirection, angle control, and brightness enhancement. These films are particularly useful in light guides and backlight units. Because in these devices, it is very important to accurately control the distribution of light.

• Microlens-on-Prism (MOP) Composite Film

MOP composite film combines the light-focusing capabilities of microlenses with the directional control of prisms, resulting in highly efficient light manipulation. The microlenses concentrate and focus light, while the prisms direct it to specific angles. This synergy allows for the enhancement of both the brightness and contrast of displays and lighting devices. MOP composite films are frequently used in applications requiring high contrast and precise control over the light's intensity and distribution.

Typical Applications

Composite films have broad application prospects in the following fields:

Display Technology

The increasing demand for higher resolution, brightness, and energy efficiency in displays such as LCDs, organic light-emitting diodes (OLEDs), and digital signage has driven the adoption of advanced composite films. Films like DOP and POP are used to enhance brightness, uniformity, and energy efficiency, while MOP films improve contrast and light control.

Automotive Lighting

In automotive lighting systems, composite films are employed to enhance light distribution, improve energy efficiency, and ensure safety. POP and MOP films are commonly used in headlamps, taillights, and ambient lighting systems to direct light in a controlled manner, enhancing visibility and ensuring consistent lighting across the vehicle.

Solar Energy

In solar energy applications, optical films are used to enhance the efficiency of photovoltaic cells by directing sunlight onto the surface area of the solar panels. The light manipulation capabilities of composite films like POP can increase the amount of light captured by the panels, improving overall energy conversion rates.

Choose Alfa Chemistry

Through close collaboration with clients, Alfa Chemistry delivers high-efficiency composite films aligned with the latest market trends to address their unique requirements. If you are interested in our products, please contact us immediately. We look forward to working with you.