Sound Quality Enhancement by using the Single Core Exciter in OLED Panel

• Sungtae Lee,
• Kwanho Park,
• Hyungwoo Park,

Vol. 14, No. 2, February 29, 2020
10.3837/tiis.2020.02.023, Download Paper (Free):

• OLED Panel Speaker
• Exciter Speaker
• Flat Panel Speaker
• Sound Quality Enhancement
• Sound Radiation

Abstract

With the development of display engineering and technology, the screen and sound quality of information devices such as TVs are improving. The screen used LEDs via LCD and PDP and a large flat panel in the early CRT to create super-high resolution. The sound is improved by directly vibrating a thin and simple panel, such as an OLED. In our previous study, the exciter speaker was attached to the rear of the OLED panel to be used as the diaphragm of the speaker, and the sound quality was as good as that of the TV using the existing dynamic speaker. This method supplied the viewer with the direct sound coming from the panel, delivering clear sound, and the sound and image came from the same location, thus giving the viewer high immersion and maximizing the effect of information transfer. OLED exciter speakers, however, have a special directivity, which tends to slightly attenuate the tone at the very center of the screen. This study improves the sound quality by improving the structure of the exciter speaker and the radiated sound of the flat panel display. A 2-in-1 Exciter is made into a single core to improve the speaker's radiation pattern.

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