Light Control Film
The light control film is based on guest-host liquid crystal (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.
Background
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.
Feature
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 contribute 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
What is "Neutral black"？
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.
About divided drive (segmentation)
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.
Use scene
- 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
Business scheme
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.
Frequently asked questions
- Q: What is your size capability?
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A: Current size is 500 mm x 1,200 mm.
We are planning to increase the size, so please let us know your request. - Q: How much curved surface can you handle?
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A: We have achieved R = 1,700 mm for our tests, but depending on the design and size, it can vary. Please contact us to discuss further.
- Q: Is it possible to use it after pasting?
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A: In order to avoid the risk of impact from the outside, we recommend using it with laminated glass.
- Q: Is it possible to supply in reel form?
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A: The film will be supplied in sheet form.
Please feel free to contact us.
DNP in Electronics
Other than listed above, DNP’s Electronics segment has a wide range of products for digital interface (display-related) and semiconductor.
You can check further our product line-up here and find anything to accommodate your needs.