Improved sound quality by using the exciter speaker in OLED panel

Abstract

The technology of using a vibrating OLED panel directly as a speaker was commercialized for the first time in 2017 in LG Display. This technology attaches a vibration actuator called an exciter to the back of the OLED panel, where it operates the OLED panel as a diaphragm of the speaker. With the development of the display maker, it developed from CRT to PDP, LCD, and LED. In the process, the image quality and appearance are leading the way. In previous studies, image and sound must be improved at the same time for easy information transmission. In addition, the concentration of watching is improved when the positions of the image and the sound match. The advantage of this technology is that it provides the viewer with direct sound coming from the panel, delivering clear audio when the sound and video appear in the same position. That gives the viewer a high intensity and maximizes the effect of information transfer. In this paper, we introduce research that generates sound directly from the exciter speaker to the panel. It also improves the sound quality of exciter speakers. Furthermore, it makes the left and right sounds independent from the sound using the exciter speakers.