This post was last updated on May 7th, 2019 at 11:12 am
A large number of studies at home and abroad have shown that OLED screens have a more significant advantage over LCD screens in terms of health. In this article, you shall be learning Oled health advantages over LCD screens. At least at this stage, mobile phones and TVs equipped with OLEDs are the devices with the least eye damage/strain. Every family with children should choose an OLED display.
We can even say that choosing an OLED device is tantamount to choosing health.
Oled health Advantages over LCD Screens
Two factors that cause “eye injury” with conventional LCD/LED screens. These are blue-light and flickering.
How Blue-light Can Cause Harm to the Eyes.
Blue light is a high-energy visible light that is widely believed to have harmful effects on the eyes. It is capable of causing discomfort and retinal damage. It is also a predisposing factor in diseases such as cancer, diabetes, heart disease, obesity, and insomnia. Hence, Oled health advantages over LCD is obvious in this regard
Blue light is the highest energy wavelength of visible light. This energy can penetrate the back of the eye through the natural filter of the eye.
The amount of blue light exposure we get every day through the use of digital devices has increased dramatically. Some of these has caused permanent damage to our eyes. The effects of blue light are cumulative and can cause eye diseases such as macular degeneration.
In children especially, the retina is very fragile and vulnerable to blue light. We can see from the picture above, the band of blue light damage to the human eye.
Further research has also shown that exposure to blue light before bedtime actually inhibits melatonin secretion and significantly delays deep REM sleep. Health is therefore adversely affected. In the long run, this can lead to cognitive decline and the development of chronic diseases.
In particular, the Blue light damage from smartphones is the top of all devices. This is because the distance between the use of mobile phones is often closer compared to other electronic devices. Moreso, you are more inclined to use in the dark which makes the damage even higher.
- Are high-end mobile phone vision killers? What are the advantages and disadvantages of OLED and LCD screens?
How Flickering/Flashing can also Cause “eye injuries.”
Another noticeable area of Oled health advantages over LCD is with “Flickering. First off, blinking is a visible change in brightness between periods displayed on a video display. It is especially suitable for cathode ray tube (CRT) TVs, computer monitors, and refresh intervals for plasma computer screens and televisions.
The switching light source causes flicker. The faster the switching speed, the faster the screen flickers. DC dimming is a technique for adjusting the brightness by directly controlling the current on both sides of the light-emitting device.
Most LCD screens use DC dimming. DC dimming itself is a very simple method. But it has obvious shortcomings. Due to the different wavelengths of the three primary colors, DC dimming causes an inevitable color shift when the brightness is extremely low, which leads to eye fatigue.
The traditional LCD/LED screen, no matter which dimension it is, is not the best choice for health.
Interpretation of OLED Eye protection Research
However, both domestic and foreign research shows that OLEDs are actually more eye-catching than LCDs.
In March of this year, Beijing Tongren Hospital affiliated to Capital Medical University made relevant tests on OLED eye health. The test includes a blue light emission test, subjective visual fatigue-visual comfort test, objective visual fatigue-eye adjustment force detection for OLED TV and QD-LCD TV. Test results show that OLED TV damage indicators are lower than QD-LCD TV. See image below
Deduction: OLED TVs have less blue-emitting emissions than QD-LCDs, and have less impact on visual fatigue. Therefore, the long-term viewing of OLED TV eye fatigue will be much lower than QD-LCD TV.
OLED vs LCD health Concerns on Mobile Phones
In October 2018, a study from Tsinghua University in Taiwan showed that Apple’s latest iPhone XS, XS Max OLED display is healthier than the LCD screen on the previous iPhone model.
As part of its research on “Danger against LEDs and White Lights”, the research team led by Professor JHJou of Tsinghua University in Taiwan has long advocated OLED lighting.
In 2015, Professor JHJou made an appeal to consumers to understand the hazards of LCDs. Governments should develop new rules to force light-based products to express their spectrum.
The study compared two indicators between the iPhone7 with LCD display and the latest iPhone XS Max with 6.5-inch OLED display.
Interpretation of the picture above
- The first one is Maximum Permissible Exposure (MPE).
This is a measure of the time the retina is exposed to inflammation after exposure to the screen. The test is based on a 100 lx light output. The iPhone 7 has an MPE of 288 seconds, while the iPhone XS Max has an MPE of 346 seconds, which means that OLEDs are more secure than LCDs.
- The second indicator is Melatonin Suppression Sensitivity (MSS).
This is a relative measure used to reveal the percentage compared to pure blue light inhibition, and 100% MSS is similar to observing pure blue light.
OLED performance is better – the MSS of the iPhone 7 LCD screen is 24.6%, while the MSS of the iPhone XS Max AMOLED screen is 20.1%.
In February of this year, the US technology media REWA published a report entitled “Which One Is More Harmful To Eyes? OLED or LED?” . The report concludes that OLEDs can reduce blue light.
A British independent quality inspection company called Intertek concluded that OLED lamps emit less than 10% of the blue light emitted by LED lamps of the same brightness and color temperature.
We can see the clue from the table below:
Oled health advantages over LCD Screen with Respect to the color display
We all know that AMOLED displays are screens made of self-illuminating organic materials. It does not require a liquid crystal backlight because the pixels emit light self-illuminating as they pass through the organic material. Therefore, compared with ordinary LCD screens, OLEDs have higher display advantages such as contrast.
We can see the difference between the two in the picture below.
From the picture above, OLED shows black as pure black, LCD is actually grey. In the case where the LCD has too much difference in brightness and darkness on the same screen, there are phenomena in which the details of the dark portion are not clear and the highlights are overexposed, which affects the visual experience and causes visual fatigue.
Thanks to self-illumination technology, OLEDs can truly display “perfect black”. It can also achieve infinite contrast. The ability to independently control each pixel allows each detail on the OLED TV screen to be fully reflected without the effects of overall picture brightness.
The pure color display of OLED is actually more comfortable for the human eye and suitable for long-term use.
Choosing OLED is Equal to choosing better Health
In 2017, the World Health Organization released a research report that the number of Chinese myopia patients is as high as 600 million, almost half of China’s total population. Among them, the myopia rate of junior high school students and college students in China has exceeded 70%, and this data is still rising year by year. The myopia rate of young people in China has already ranked first in the world.
In contrast, American teenagers have a myopia rate of about 25%, Australia is only 1.3%, and Germany’s myopia rate has been kept below 15%.
With the expansion of the middle-class consumer group, people’s consumption concept has also changed, and eye health has become a purchasing factor that consumers pay more attention to.
Today, more middle-class are working hard to improve their “responsibility”, the popularity of gyms and private fitness has soared, and outdoor marathons have become mainstream lifestyles.
In the management of children’s health, eye health has also become an important link.
Oled health advantages over LCD Screen with Respect to Television Displays
In the current high-end TV market, “eye health” has become in top demand by consumers. Nowadays, more families prefer to choose TVs with more healthy eye protection.
Avi Cloud (AVC) has conducted relevant surveys for high-end TV users. The data shows that changes in the consumption environment and consumption structure have driven the concept of consumption from blindness and display to individualization and quality, while quality represents high-end and healthy.
In terms of television, the family structure of high-end TV users is dominated by children. Also, the proportion of newly purchased TVs for children’s health is 10%.
In addition, among the high-end products with the highest user recognition, OLED TVs are favored by more people with a score of 8.1. Among the main reasons for users to choose OLED TVs, is “health eye protection”. The second reasons are clear picture quality and “latest technology”.
OLED TVs have more significant advantages in eye health and are the most suitable health choice for humans