Although OLED TVs provide a high-quality viewing experience, a recent study has demonstrated that they can also contribute to a restful night’s sleep.
Despite the common knowledge that watching TV for long periods of time can lead to eyestrain, a recent report suggests that using an OLED TV can actually have positive effects on sleep when consuming content.
A clinical study, in partnership with LG Display, was carried out by researchers from Kookmin University to examine the impact of LCD and OLED TVs on the levels of Melatonin in 40 adult men and women who watched the same content.
Melatonin is a naturally produced hormone in the body. While it does not induce sleep, its levels increase in the evening, leading to a state of quiet wakefulness that aids in promoting sleep.
According to this study, individuals who watched OLED TVs showed an 8.1% rise in melatonin secretion over a period of two hours, while those who watched LCD TVs experienced a decrease of 2.7%.
The study found that the blue light emitted from displays can disrupt the production of melatonin, which may result in sleep disturbances. The research states that LCD panels emit a significantly higher percentage of blue light (70-80%) due to their heavy dependence on a bright backlight, while OLED TV panels only emit 36% blue light.
According to a study conducted by UC Davis Medical Center, excessive exposure to blue light emitted from digital devices can result in harmful effects on retinal cells, leading to vision problems like age-related macular degeneration. Furthermore, it may also increase the risk of cataracts, eye cancer, and growths on the clear covering of the white part of the eye.
Additionally, the study conducted by Kookmin University also concluded that viewing content on OLED TVs can enhance overall comfort and well-being. According to Prof. Kim Chang-wook, the leader of the research team, OLED TVs not only reduce the negative effects on melatonin secretion during viewing, but also stimulate the parasympathetic nerves responsible for promoting feelings of comfort, leading to healthier sleep patterns.
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