oled screen burning screen cause analysis
Screen as one of the most expensive parts of the iPhone, Apple attaches great importance to its design, from the iPhone4 period of retina (ReTIna) screen to the iPhoneX series of OLED screen, Apple has always maintained a high level of industrial standards.
However, for the use of OLED screen devices, “burn screen” has become a hard injury to escape. The so-called “burn-in” is worth the OLED screen for a long time to display the same screen, eventually leading to local display abnormalities.
The reason for this problem is the unique characteristics of the OLED screen – self-luminous. General display are equipped with a backlight layer behind the backlight layer is bright after the display will light up, but the OLED screen light mode and this is different, OLED screen is through the pixel point self-illumination to imaging, when the screen for a long time to display the same color, some components will be due to continuous light and aging, when this aging to a certain extent will not be restored, so on the screen appears “residual image”.
In order to solve this problem, various cell phone manufacturers are thinking of ways to avoid it, for example, Samsung has made settings for the virtual buttons below some models, which will automatically fine-tune the position of its display every once in a while, and because the adjustment is very small, it will not affect the user’s use, and also cleverly avoid the same image displayed in the same place for a long time.
In the ordinary use of the process, pay attention to the following issues can also avoid “burn screen”.
1. Avoid displaying static images and maximum brightness for a long time.
2. Turn on automatic brightness adjustment.
3. Use a short auto-lock time.
oled screen burning screen how to fix
OLED is undoubtedly the best display panel technology available, and the overall picture quality of OLED TVs is highly praised. However, the magnificent technology also has some defects, CRT and plasma TV aging residual shadow problem, in OLED will also occur. So, OLED aging phenomenon is serious, and how to avoid such phenomena occur? Let’s find out.
OLED “burn screen”
Plasma period, the so-called “burning screen” is very common, which is also the biggest criticism of users of plasma. For OLED, because of the difference in technology (OLED using organic light-emitting diodes, plasma is applied voltage phosphor), the chances of OLED permanently burned screen is relatively low. Of course, with the increase in use time, OLED will also occur aging phenomenon, mainly in the residual image.
Actual test OLED shadow
Foreign media Reviewed OLED residual shadow phenomenon of stress testing, specifically the use of LG55EG9100 (Full HD OLED TV) continuous playback of Blu-ray DVD “The Fifth Element” menu interface for about 20 hours, and then use the monochrome background to test whether the screen produces changes.
After 20 hours, the menu interface of the movie DVD could be seen to stay on the screen, and would not disappear even when the TV menu was called up. Then, turn off the TV for 10 minutes, you will find that the DVD menu residue basically disappeared, but careful observation will also find some residue.
Turn the LG55EG9100 off again for about two days, then start the TV and find that the residual images are still vaguely present. So, does this mean that a brand new OLED TV is just ruined? Do not be nervous, look at the following method.
How to fix OLED aging
Reviewed editors tested the LG55EG9100 again, including connecting it to XboxOne for 45 minutes to play games and displaying the XboxOne home screen interface fixedly for an hour, and finally found that the previous DVD menu residuals were largely gone. Turning the TV off and on again the next day, the previous residual images were completely gone, just like a new TV. However, after 45 minutes of displaying a still image, the white part of the right side of the screen vaguely appeared again, and when the power was turned off for about two minutes and turned on again, it was found that they had disappeared again.
After consulting with LG TV engineers, we can probably understand how to prevent the residual image phenomenon on OLED TV. First of all, don’t let the TV display bright static images for too long. If residual images inadvertently appear, you can turn off the TV for about 5-10 minutes and turn it on again while playing some dynamic elements, then turn it off again for a few hours and use it normally.
In short, to prevent permanent screen damage from occurring on OLED TVs, you need to avoid letting them display static images for long periods of time. For the average user, this problem should not happen often, plus most OLED TVs have an automatic shutdown feature to prevent this phenomenon. It should be noted that game console users should be more careful when using OLED TVs, especially the kind of games that do not have a strong sense of dynamics and frequently display the same elements.
