What do you know about OLED?

1. Do OLED screens really hurt our eyes?

OLED screen smartphones have entered the mainstream in the last two years, and the market's top smartphone manufacturers are using OLED screens in their flagship models one after the other.

Do OLED screens actually harm our eyes, is the issue. You get discomfort when using mobile phones with OLED screens because they flicker.

A typical LCD panel uses an LCD backlight to achieve screen luminescence, whose flickering frequency can approach several kilohertz (Hz), meaning that flickering is essentially nonexistent. OLED panels' self-luminous pixels have a low power draw, which has lowered the frequency of their flickering. Many mobile phones currently have OLED panels that flicker between 215Hz and 250Hz when PWM dimming is used.

According to a previous assessment from the IEEE (Institute of Electrical and Electronics Engineers), flickering frequencies above 1250Hz pose no health hazards. "Migraine and other diseases can be brought on by flickering."

Professionals in the communication sector view this value as being low. However, there is a lot of debate in the sector because even the medical community has not provided a clear response to this topic.

Director of the ophthalmology division at the Eye Hospital of the China Academy of Chinese Medical Sciences is Jie Chuanhong. In an interview, he claimed that prolonged seeing of a screen, be it that of a computer, smartphone, or tablet, can easily result in visual fatigue, which is not always tied to the screen.

"There is no direct link between eye damage and OLED screens," Professionals in the communication sector added that OLED panel flickering is seldom noticeable to human eyes. "Staring at a screen for an extended period of time may result in visual fatigue."

Some specialists contend that both LCD and OLED screens can damage human vision since they inevitably emit blue light that is damaging to the eyes. The eye-protection mode, which is akin to PWM dimming, and a yellowish color tone on the screen are two ways OLED addresses this issue.

Many online users recommended that we enhance the brightness on smartphones with OLED screens as much as possible since the lower the brightness, the more damaging it would be to our eyes. The smartphone screen's brightness can be decreased to further lower the frequency of flickering.

According to some ophthalmologists, different people's eyes perceive OLED flickering differently and differently. Users who are sensitive should utilize cellphones with LCD panels. This finding has not been the subject of a single, comprehensive medical declaration.

2. Does finding a smartphone with a nice OLED screen need luck?

Some internet users wonder why some cellphones are bad for our eyes while others aren't. Why? All of them have OLED displays.

Some online users even conducted a comparative experiment, and it is clear that the Mate20 Pro's screen is superior than that of the P30 Pro. This is simple to comprehend. Screens on mobile devices can vary, and brands like Samsung, LG, and BOE have various technologies and levels of product quality.

According to several experimental findings, the physical characteristics and material of various electronic screens—rather than their size—are what most significantly affect visual tiredness.

Even for the same mobile phone, "luck" determines whether the screen is nice or not. Because several OLED screen manufacturers may be utilized in the same mobile phone model, the manufacturer frequently does not make this distinction and does not offer a detailed listing of the screen supplier in the user manual.

Practically all of the latest 5G smartphones have OLED panels.

3. Why are OLED panels required for smartphones?

Why not just stop using OLED screens if they quickly lead to visual fatigue? Today, it is quite challenging for us to reject OLED screens.

The color of OELD screens is richer, more complete, and more lifelike. OLED panels, which are now commonplace in high-end smartphones, have replaced LCD screens, which were formerly the standard in low-end smartphones but are no longer the favored option.

What caused it, and why? OLED displays are the only ones that can be used to create futuristic items like those with fingerprints behind the panel and ultra-thin devices. In the industry, it is now widely acknowledged.

The good news is that BOE has just unexpectedly revealed that it has created successful fingerprint technology under LCD screens, which will be mass-produced by the end of this year.

Even some individuals believe that the mobile phone industry's return to LCD panels from OLED screens signals the decline of technology. In terms of just eye health, LCD screens also generate blue light that is bad for people's eyes. We need to spend less time on cellphones if we truly want to protect our eyes.