LG Display develops 'invisible' thin and light speaker with film-type vibration generator

By Lim Chang-won Posted : November 21, 2022, 16:55 Updated : November 21, 2022, 16:55

[Courtesy of LG Display]

SEOUL -- LG Display, a major flat panel maker affiliated with South Korea's LG Group, has developed a thin and light speaker capable of implementing high-quality sound. When applied to cars, speakers can not be seen in the eyes of passengers, increasing the degree of freedom in interior design, and dramatically reducing the space occupied by conventional speakers to use boarding space more widely.
LG Display said its "Thin Actuator Sound" solution would be commercialized in the first half of 2023. The company used a film-type vibration generator that can use display panels or various vehicle interior materials as vibrators to make a sound.

The so-called "invisible" solution is 150mm×90mm and weighs 40g. It is 2.5mm thick, thin, and light. The thin actuator sound solution is only 10 percent thick compared to conventional car speakers which are large and heavy due to many components such as vibration meters, support meters, and magnetic meters. 

LG Display will unveil its solution at the Consumer Electronics Show (CES), a global tech event to be held in January in Las vegas. "We will provide customers with a new vehicle sound experience by innovating existing large and heavy speakers in space, design, and eco-friendly aspects to realize high-quality sound quality," LG Display's business development head Yeo Jun-ho said in a statement on November 21.  

LG Display said its solution can be installed in various places such as ceilings, fillers, dashboards, and headrests as well as in-vehicle displays, eliminating sound quality deviation depending on boarding location and implementing stereoscopic sound effects.

Global sound verification agencies have assessed the solution's superior sound uniformity by seat location as well as its premium sound clarity and tone, LG Display said, adding that it is eco-friendly without using neodymium (Nd) alloys, which are used to make high-strength neodymium magnets widely used in microphones, professional loudspeakers, in-ear headphones, high-performance hobby DC electric motors, and computer hard disks.
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