SEOUL -- LG Display, a major flat-panel maker affiliated with South Korea's LG Group, showcased a transparent OLED (organic light-emitting diode) window for high-speed trains at a railroad technology trade fair in the southern port city of Busan. The window displays operation information, advertisements and entertainment content.
LG Display used a 55-inch OLED panel with a transparency of 40 percent to replace train windows, saying the panel is strong against impact and vibration by applying special tempered glass to suit high-speed trains.
The company said its transparent OLED panels would target clients in Asia, Europe and North America. "We will continue to provide solutions that can maximize the value of space through form factor innovation that only OLED can implement," LG Display's TV business head Oh Chang-ho said in a statement on June 16.
LG Display provides a lineup of LED and OLED signage, transparent or not. Transparent OLED screens display black content as transparent, allowing designers to overlay digital content such as images, text and video onto real-life objects placed behind the transparent screen. LG officials suggest transparent OLED can be widely used in various places such as hotel check-in counters, museums, subways, stores, self-driving cars and aircraft cabin interiors because they do not need backlights.
In August 2020, LG's transparent OLED was used for the windows of subway cars in two Chinese cities, Beijing and Shenzhen, showing traffic information and daily life information such as weather forecasts and news. Assa Abloy, a Swedish company known for high-performance doors and door security solutions, has agreed to produce transparent OLED automatic doors.
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