en.Wedoany.com Reported - Dimension News, With the increasing popularity of electric vehicles and panoramic sunroofs, automobiles are evolving from mere "driving spaces" into multi-dimensional "experience spaces." In line with this trend, South Korea's LG Chem is actively leading technological changes in the automotive dimming film market with its innovative SGF (Switchable Glazing Film) product portfolio.
SGF is a film that adjusts light and heat transmission levels via electrical signals, primarily used in automotive glass such as sunroofs. Its structure consists of optical adjustment materials sandwiched between two electrode films. It remains opaque under normal conditions, but when voltage is applied, the internal liquid crystals realign to become transparent. LG Chem currently supplies SGF products to Germany's Webasto, a global top 100 automotive parts manufacturer, for use in advanced smart sunroof systems installed in European vehicle projects, with transaction volumes expected to reach hundreds of billions of Korean won.
In terms of product technology, LG Chem offers two technical solutions: PDLC and NCLC. PDLC, based on polymer-dispersed liquid crystal technology, provides stable shading performance. NCLC, using nano-encapsulation technology, offers advantages in uniform intermediate gray-scale dimming and Clear/Neutral Black tones, with faster response times. Leveraging its expertise in liquid crystals, adhesives, and precision coating technologies accumulated in electronic materials such as displays and semiconductors, LG Chem holds over 200 SGF-related patents.
LG Chem plans to further develop next-generation products and expand SGF applications to more automotive glass scenarios, such as side windows. Amid the growing demand for thermal management technologies in automotive glass systems, the company is actively advancing new glass substrate solutions compatible with light and heat management based on NCLC technology.
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