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

Lee, Sungtae; Park, Kwanho; Park, Hyungwoo

doi:10.3837/tiis.2020.02.023

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

KSII Transactions on internet and information systems : TIIS, v.14 no.2, 2020년, pp.871 - 888

Lee, Sungtae (LG Display) , Park, Kwanho (LG Display) , Park, Hyungwoo (School of Information Technology, Soongsil University)

Abstract ▼ AI-Helper

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.

주제어

표/그림 (21)

그림 Fig. 1. Simplified model of dynamic loudspeaker [11]
그림 Fig. 2. A model of flat panel exciter speaker [6]
그림 Fig. 3. Frequency Response Comparison between conventional TV and OLED Panel Speaker TV
그림 Fig. 4. Sound Image of conventional TV and proposed TV
그림 Fig. 5. Electro-Mechanical equal Model Block Diagram of Speaker [9][15]
그림 Fig. 6. Simulation results by magnet grade for magnetic system optimization
그림 Fig. 7. N33H single and dual core frequency response vs. sound pressure
그림 Fig. 8. Frequency response comparison of 2in1 exciter and ellipse type exciter
표 Table 1. Demographics.
표 Table 2. Exploratory and confirmatory factor analysis, reliability, mean, standard deviation, correlations.
표 Table 3. t-test analysis
그림 Fig. 9. Dynamic Range Measurement result of 2 in 1 Exciter
그림 Fig. 10. Dynamic Range Measurement result of Ellipse Type Single Core Exciter
그림 Fig. 11. Directional characteristics Measurement Method
그림 Fig. 12. Directional Characteristics of 2in1 Exciter Speaker
그림 Fig. 13. Effect of radiation angle due to mutual interference of two sound sources [10]
그림 Fig. 14. Measurement Result of exciter beam pattern by distance and radiation angle
그림 Fig. 15. 2in1 exciter model and attenuation waveform prediction model according to numerical value
그림 Fig. 16. Interference fringe results from laser doppler measurements
그림 Fig. 17. Design Model of Ellipse Type Single Core Exciter
그림 Fig. 18. Frequency response measurement result by azimuth angle of Ellipse Type Single Core Exciter

참고문헌 (20)

Republic of Korea OLED Yesterday, Today and Tomorrow, Korea Display Industry Association, Sainovation, 2016.
S. T. Lee, H. W. Park, M. J. Bae and K. H. Park, "Sound Quality Improvement of a Flat-Panel Display Front Speaker(Emotional and EEG Test of Exciter Speaker)," SID Symposium Digest of Technical Papers, Vol. 48, Issue 1, pp. 1680-1681, 2017.
"AMOLED Industry Market Tracker", IHS Report, 2017-2018.
H.J. Shin, M.Y. Son, B.H. Kim, Y.H. Kim, C,A, Lee, K.S. Kim, J.H. Choi, J.J. Kim, C.H. Oh, and I.B. Kang, "A Novel High Speed Integrated Gate Driver Circuit using a-Si TFT for 240Hz FHD LCD TVs," SID Symposium Digest of Technical Papers, Vol. 42. No. 1, pp.186-189, 2011.
W.J. Nam, B.C. Ahn, S.Y. Cha and S.D. Yeo, "Technological Progress and Commercialization of OLED TV," SID Symposium Digest of Technical Papers, Vol. 44. No. 1. Oxford, UK: Blackwell Publishing, 21-1, 2013.
S.T. Lee, K.H. Park, K.G. Jang, and C.H. Oh, "Study on Enhancement of the Sound Quality by Improvement of Panel Vibration in OLED TV," SID Symposium Digest of Technical Papers, Vol. 49. No. 1. 2018.
Hiroyuki Takewa, Shuji Saiki, Sawako Kano and Atsushi Inaba, "Slim-type speaker for flat-panel televisions," IEEE Transactions on Consumer Electronics, Vol. 52, No. 1, pp. 189-195, 2006.

상세보기
S. Lee, Basic Properties of Sound and Application, Chung-Moon-Gak Publisher, 2004.
S.J. Oh, Theory and design of loudspeaker, SuckHakDnag press, 2011.
S. Lee, H. Park, K. Park, and M. Bae, "A study on the optimal speaker position for improving sound quality of flat panel display," The Journal of the Acoustical Society of America, Vol. 144, No. 3, 2018.

상세보기
J. T. Kim, J. H. Kim, J.O. Kim and J.K. Min, "Acoustic Characteristics of a Loudspeaker Obtained by Vibroacoustic Analysis," Trans. Korean Soc. Mech. Engineering, Vol. A21, No.10, pp. 1742-1756, 1997.
H.W. Park and M.J. Bae, "A Study on the Improvement of Sound Quality According to the Location of OLED Flat Plate Speaker," Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology, Vol.7, No.12, pp. 775-783, 2017.
S. Lee, H. Park, M. Bae, and K. Park, "Study on multi-channel speakers for controlling sound field of flat panel display," The Journal of the Acoustical Society of America, Vol 143, No.3, 2018.

상세보기
J.H. Kim, J.W. Kim, "Thin speakers and transparent speakers," CERAMIST, Vol. 17, No. 2, pp.60-66, 2014.
H. J. Beon, "Trends in speaker manufacturing technology at domestic and abroad," The Magazine of the IEEE Korea, Vol. 13, No.6, pp.513-520, 1986.
Jeremy C. Franklin, Fletcher R. Rothkopf, Scott A. Myers, and Stephen Brian Lynch, "Display-based speaker structures for electronic devices," U.S. Patent, No. 8,934,228. 13 Jan. 2015.
D.J. Choi, Y. W. Park, H. J. Park, "Research of Relation Between Sound Pressure and Magnetostrictive Speaker For 2ch Flat Display," in Proc. of Korean Society for Precision Engineering, 2010 Fall Conference, pp.603-604, 2010.
H. W. Choi, Y. J. Kim, Y. W. Park, "Acoustic analysis and vibration modeling for design of flat vibration speaker," in Proc. of Korean Society for Precision Engineering, pp. 545-546, 2008.
P. Sun, J.H. Park, J. Kwon, and S. Hwang, "Development of Slim Speaker for Use in Flat TVs," IEEE TRANSACTIONS ON MAGNETICS, VOL. 48, NO. 11, 2012.

상세보기
W. Hoeg, L. Christensen, and R. Walker, "Subjective assessment of audio quality-the means and methods in the EBU," EBU Technical Review, pp. 40-50, 1997.

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