South Korean researchers have unveiled revolutionary OLED display technology where each pixel functions as an independent speaker, opening new possibilities for creating ultra-thin devices with spatial audio capabilities.
G. Ostrov
A team of scientists from Pohang University of Science and Technology (POSTECH), led by Professor Su Seok Choi and graduate student Inpyo Hong, has achieved a remarkable breakthrough in display technology. Their development features a 13-inch OLED screen where each pixel can function as a separate speaker.
Innovation Principle
The secret behind this revolutionary display lies in ultra-thin piezoelectric elements positioned directly beneath organic light-emitting diodes. These components convert electrical impulses into precise vibrations, creating localized sound in specific screen areas.
A specialized frame construction ensures isolation of each sound emitter, preventing acoustic interference between neighboring pixels. This approach enables the formation of a multi-channel audio array without requiring external audio drivers.
Technical Achievements
POSTECH engineers meticulously optimized frame structure parameters according to the characteristics of materials used in display manufacturing. The result is a system that effectively confines acoustic energy to designated zones, improves frequency characteristics, and reduces harmonic distortion across an extended frequency range.
Initial testing demonstrated stable sound pressure regardless of input voltage variations and user distance, indicating the technology's readiness for commercial application.
Implementation Prospects
Unlike existing hybrid solutions, the new technology maintains OLED panel compactness while providing high-quality spatial audio reproduction. The working prototype's size opens possibilities for integration into tablet, laptop, and automotive infotainment system production lines.
Despite technical readiness, developers have not yet disclosed commercialization plans, leaving the timeline for such displays reaching the consumer market uncertain.
Additional information about Pohang University research can be found on their official website: https://www.postech.ac.kr/eng/