Light Control Film

The light control film is based on GHLC technology realized by DNP's converting technology and sheet processing technology. Electronically controlling the shading and transmission enables the film to protect privacy and have a seamless design.

For many companies, remote working has been introduced as the new normal. In recent years, instead of working from home, there has been a proposal for "working in your car" that utilizes the inside of a car as an office. However, one of the challenges of working in a parked car is worrying about your surroundings such as passing pedestrians. DNP's Light Control Film is a single electric switch solution to switch the interior of the car into a private space.

Switchable film using GHLC method （GHLC：Guest-Host Liquid Crystal）
・"Neutral black" creates a sleek aesthetic that allows a smooth transition to interior design
・High-speed drive allows instant switching between "glare" and "transparent" (≤1sec.)
・Color can be customized with pigmented dyes
・The film based system allows for high flexibility, shape forming, and can follow curved surfaces.
・Low voltage requirements contributes to "energy savings" that affects the cruising range of EV vehicles (≤30V)
・High transparency realizes a glass-like appearance
・Divided drive in the film improves design

Other technologies such as EC and SPD have a green or blue hue.
GHLC technology can achieve "Neutral black" that creates a sleek aesthetic and seamless design integration into a car.

Video : DNP's Dimming Technology Enhances the Beauty of the World (1:05)

Divided drive（Segmentation) is a drive method that can individually control a specific area in the electron shade by patterning the transparent electrodes. You can recreate the same optical effect of opening and closing curtains and blinds by electrical control.

・Replacing mechanical curtain with electrical curtain for weight saving and space saving
・Add smart function to window glass such as sunroof
・Add anti-glare function such as sun visor
・For privacy protection and seamless design
・Contrast improvement of transparent display such as head-up display

In April 2017, DNP started collaboration with "Alpha Micron (AMI)", which conducts R&D of high-technology Liquid Crystal applications, in the LC dimming film business. In August 2018, we established a joint venture "AKARI, LLC" as a sales window for dimming films that use guest-host LCs.