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Company News >> Eye protection is a key factor for OLED to go mainstream 30th,Nov,2020
                                                Do you know how many people in China are nearsighted?

The answer is shocking: currently more than 600 million (about 1.4 billion globally), and it is likely to exceed 700 million in 2020. Among these 600-700 million people, teenagers account for a considerable proportion, and the myopia rate of Chinese teenagers ranks first in the world.

Specifically, data from the Ministry of Education show that the myopia rate of all schools in my country continues to rise: the myopia rate of elementary school students is 45.71%, that of junior high school students is 74.36%, and the myopia rate of high school students is as high as 83.28%. This means that preventing myopia in children is a destiny that almost every Chinese parent cannot escape.

Why is this? The answer is not difficult to guess: the dual environment of schoolwork burden and electronic equipment leads to excessive use of eyes at close range. At the same time, the outdoor activities of Chinese teenagers are seriously insufficient.

In fact, most parents also know the causes of children’s nearsightedness-but what about “knowing”? After all, education is the social issue most prone to “anxiety” in China today, whether it is schoolwork, electronic equipment, The time for outdoor activities is a "systematic situation" that cannot be controlled by the parents alone. Myopia is the enemy of parents, but no one can fight alone in front of the big environment.

Therefore, for many parents, the only external resource they can rely on is to make a difference in "hardware". In this sense, if there is a science and technology field that can contribute the most to the myopia problem of young people, then it may be the display industry, and even in the eyes of some people of insight, eye health is the key to the healthy development of the entire industry in the long run. Consider the prerequisites.

After all, in China, the problem of myopia among young people has never been so severe.

Increased video time

In 2020, a sudden epidemic disrupted everyone's work and life rhythm, and people were forced to move many things online, such as the teaching process.

However, with the rapid development of online education, data from the Ministry of Education show that compared with last year, the myopia rate of primary and secondary school students increased by 11.7% from January to June this year, of which the myopia rate of primary school students increased by 15.2%. Junior high school students increased by 8.2%, and high school students increased by 3.8%.

That's right, during the first half of the epidemic, video time increased significantly and outdoor activities decreased significantly, resulting in a significant increase in students' myopia. The Ministry of Education found that the detection rate of myopia for one hour of online classes per day is 45.8%, 49.3% for 1 hour to 2.5 hours, and 62.4% for 2.5 to 4 hours. More than 4 hours is 76.7%, and the detection rate of myopia for "non-learning purpose" screen time is similar to that of online classes. That is to say, in the case of insufficient outdoor activities, whether it is learning or recreation, for a long time Looking at the screen, there is a strong positive correlation with decreased vision.

The increase in screen time has made the problem of myopia more difficult. In the past, the burden of schoolwork and electronic equipment, the two factors that led to excessive eye use, were basically independent of each other, but in the post-epidemic era, the two factors will increasingly converge, and students using video terminals such as TVs and mobile phones will become normal. Preventing myopia presents greater challenges.

Of course, just like fighting the child’s myopia problem, it is the destiny of this generation of parents. From now to the future, coexisting with various screens such as TV is also the destiny of this generation of children. No parent will prevent children from watching TV reasonably. The key is to choose Relatively not hurt the eyes of the TV.

In fact, many people know that the damage caused by TV to the eyes is mainly visual damage and visual fatigue caused by blue light and screen flicker.

Blue light widely exists in electronic screens, and basically the shorter the wavelength, the higher the energy. Among them, high-energy blue light with a wavelength of 415nm-455nm may cause eye damage. The most easily accessible liquid crystal LED screens in our daily life are passive light-emitting display devices. They require higher-brightness backlights to show brightness and colors, but the higher the brightness, the higher the color temperature, and the blue wavelength light source will also Relatively higher, the longer you look at, the greater the blue light damage your eyes will receive.

Not only blue light, because the LED backlight will flicker frequently as the current passes, there will also be screen flickers that are difficult for the human eye to recognize on the TV screen, making the eyes fatigued for a long time.

Especially in the current wave of large screens, although it can bring an excellent immersive viewing experience, the high-energy shortwave blue light and screen flicker released by the large screen can cause great damage to the eyes. This is why compared to ordinary LCD TVs, the advantages of OLED in eye health are becoming the most important decision-making factor for many families.

The inevitable direction of display technology development

In fact, one of the reasons why OLED has become the public measurement criterion of high-end TV is that it coincides with people's rigid need for eye protection.

First of all, from the technical principle, OLED is good at resisting harmful blue light. Self-luminous characteristics, so that it does not need to be illuminated by a high-brightness LED backlight like an LCD TV. Each pixel can emit light independently. As long as a voltage is input to the electrode, the excitation layer can generate the required colored light. The organic light-emitting materials greatly reduce the intensity of the blue light spectrum. The amount of blue light emitted is generally about 50% less than that of ordinary TVs, and the brightness is softer and more comfortable. It can greatly reduce the fatigue of the eyes and achieve the effect of protecting eyesight.

In addition, ordinary TVs must have a backlight source to present the picture quality. The backlight source will always flicker at a high frequency with the passage of current, which is an inevitable drawback of ordinary TVs. Since OLED self-luminous TVs have no backlight, they can achieve "flicker-free" to the greatest extent: The results of the international certification body TUV Rheinland show that the "non-visual screen flicker" phenomenon of OLED panels is determined to be 0%, but LCD 25%; the measurement result of the global safety science company UL also shows that the screen flicker phenomenon standard is 9.6%, and the OLED panel has obtained the "Flicker Free" certification mark with a very low 1.3%. The LCD panel It is as high as 87%.

Therefore, as Zhao Xiaoying, Director of the Digital Media Room of the Digital Technology Research Center of the China Electronics Standardization Institute, said: “The results of the comparison test conducted by the China Electronics Standardization Institute on the same size OLED display screen and other display screens can be seen. The OLED screen has advantages in average brightness, including its blue light and weighted radiance. It also performs well in clarity, comfort, detail expression and realism, especially in terms of eye fatigue. some."

It is worth mentioning that the occasion where Director Zhao Xiaoying released the above conclusion was the launching ceremony of a public welfare activity named "OLED Self-Illuminating Eye Protection Action".

Yes, because OLED panels have obvious eye protection advantages, all parties in the OLED industry chain also hope to use public welfare to enlarge this advantage. At the launching ceremony of the "OLED Self-Illuminating Eye Care Action", the China Electronics Video Industry Association and LG Display jointly represented the OLED camp and donated funds and materials worth 1 million yuan to the China Youth Development Foundation, which will be used for 50 people Students from poor families will undergo eye health examinations and treatments. In addition, eye protection equipment including OLED TVs and eye lights will be donated to 30 Hope Primary Schools in poor areas to improve the eye health of young people in poor areas. In the future, channel vendors such as, Suning, Gome, Skyworth, Philips, Hisense, Konka, LG Electronics, Sony and other OLED TV manufacturers will also participate in public welfare activities in different ways to promote the development of OLED self-luminous eye-protection TVs.

After all, seeing eye health as a necessary condition for the healthy development of the entire display industry is not only a manifestation of social responsibility, but also an inevitable direction for the development of mainstream display technology in the future.

Conclusion: Go to the mainstream

In recent years, when LCD TVs have not been out of the predicament, OLED TVs are indeed on the way to "mainstream display technology". At present, nearly 20 manufacturers have launched OLED TVs, and most of the TV brands you know have already released their own OLED products.

Worldwide, OLED almost represents the high-end itself. The latest data shows that in the global TV market above $1,000, since January to May this year, the penetration rate of OLED self-luminous TV in Japan has reached 21%, and the penetration rate of OLED TV in the United States has reached 22%. In Europe from January to April this year, this figure is as high as 33%, and OLED TVs continue to grow in the global market.

What is even more gratifying is that just this year, the 8.5-generation OLED panel production line in Guangzhou was officially mass-produced, which means that OLED panels have been localized at present, and the speed of popularization in China is bound to accelerate. In the expectations of the entire OLED industry chain, This will contribute more to the eye health of Chinese young people.

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