P‐112: Sound Quality Improvement of a Flat‐Panel Display Front Speaker: Emotional and EEG Test of Exciter Speaker

Lee, Sung-Tae; Park, Hyung-Woo; Bae, Myung-Jin; Park, Kwan-Ho

doi:10.1002/sdtp.11979

Cited by 8 publications

(14 citation statements)

References 1 publication

(2 reference statements)

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“…The proposed flat‐display exciter speaker vibrates the panel, such as the OLED, directly to match the sound and screen focus. The merits of matching picture and sound were confirmed in previous studies . Furthermore, it has advantages in frequency response and intelligibility over downfiring sounds as in previous LCDs and PDPs .…”

Section: Proposed Flat‐panel Display Exciter Speakersupporting

confidence: 55%

“…Viewers have faster understanding and realism in a clearer sound. In previous studies, when the focus of sound and the focus of the screen matched, the understanding of the video is high and the concentration is improved …”

Section: Experiments and Resultsmentioning

confidence: 97%

“…However, the analysis in the front center of the screen changes the acoustic value reflected by the speaker's directivity, the TV stand, or the surrounding environmental structure. Some modern TVs have TVs with algorithms that correct and improve them . However, OLED panel speakers are less influenced by the environment in which TVs are installed, so they can take advantage of good quality at the time of design and production.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…In addition to the linguistic and morphological meaning, it transfers a variety of cultural, emotional, and healthy information and content. Information technology (IT) developed rapidly from the 20th century, and various information devices were developed as the computational speed and storage memory of computers increased exponentially . Among these devices, it is TV that has much influence and conveys much information of modern people.…”

Section: Introductionmentioning

confidence: 99%

“…Among these devices, it is TV that has much influence and conveys much information of modern people. In the early stages of its development, TVs used CRT to compose images and had monoaural audio . Then, speakers were arranged on the left and right edges for stereo sound.…”

Section: Introductionmentioning

confidence: 99%

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Improved sound quality by using the exciter speaker in OLED panel

Lee¹,

Park²,

Park³

et al. 2019

J Soc Info Display

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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.

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Section: Proposed Flat‐panel Display Exciter Speakersupporting

confidence: 55%

Section: Experiments and Resultsmentioning

confidence: 97%

Section: Experiments and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improved sound quality by using the exciter speaker in OLED panel

Lee¹,

Park²,

Park³

et al. 2019

J Soc Info Display

Self Cite

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57‐5: An Enhancement of Sound Quality by Using the Single Exciter in OLED Panel

Lee¹,

Park²,

Park³

et al. 2019

Symp Digest of Tech Papers

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OLED panel speaker technology was first developed in 2017 by LG Display. This technology is based on the principle that an OLED panel acts as a diaphragm of a speaker by attaching an oscillator called an exciter to the back of the OLED panel. The technology delivers direct, clear sound from the panel to viewers, maximizing the immersion experience by allowing the sound and video to be played back at the same location. However, due to the strong directivity, the tone of the panel tends to be somewhat diminished at the center of the panel, which is the main TV viewing angle. In this paper, we improved the sound quality by improving the angle of directivity by making 2in1 exciter 1core model.

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P‐101: Analyzing Acoustic Characteristics of Multi‐channel Speaker Directly Driving Flat Panel Display: Considering the Acoustic Stereo Effects

Park

Lee²

2019

Symp Digest of Tech Papers

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With the technological improvements in the display industry, organic light-emitting diode (OLED) panel manufacturers have changed screen high-definition to simple 3D effects, augmented reality, or virtual reality. In previous research, we introduced the sound technology that vibrates the OLED panel, which name is crystal sound OLED(CSO). The difference from LCD panels, OLED panels are the simple structure, that are consists of the glass of screen and that the backside for supports. Therefore, the screen panel can take on the role of a diaphragm of an ordinary dynamic speaker. Human hearing can confirm the sound position of the three-dimensional space by utilizing the delay difference of the sound reaching the left and right ear. If we generate these characteristics virtually, can create a 3D stereo effect. In another previous research, It is possible to create a stereo sound with multiple independent speakers. However, there is a limitation in the sound of a display speaker composed on a single panel. In this study, we analyze the acoustic characteristics of a flat speaker to realize such stereophonic sound and improve sound quality. Author KeywordsDirect drive speaker, Stereo excite speaker, Exciter speaker of OLED TV, 3D stereo realization E Ex xc ci it te er r F Fl la at t p pa an ne el l B Ba ac ck k C Co ov ve er r

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P‐112: Sound Quality Improvement of a Flat‐Panel Display Front Speaker: Emotional and EEG Test of Exciter Speaker

Cited by 8 publications

References 1 publication

Improved sound quality by using the exciter speaker in OLED panel

Improved sound quality by using the exciter speaker in OLED panel

57‐5: An Enhancement of Sound Quality by Using the Single Exciter in OLED Panel

P‐101: Analyzing Acoustic Characteristics of Multi‐channel Speaker Directly Driving Flat Panel Display: Considering the Acoustic Stereo Effects

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