Hello everyone! The problem, voiced in the title of the article, is quite serious in itself. Since in the event that traces of previously used programs remain on the screen, it becomes simply impossible to use the device. The picture merges and turns into some kind of uniform disgrace. To make it clear what we are talking about, here is a small example - you wrote a message, went into the game, and you have a dim image of the keyboard that is displayed on top of the game on the entire display.
This can happen not only with the keyboard, but in general with any image - “remain” program icons, the Safari search bar, settings ... In a word - horror! And with this very "horror" we will deal today. Let's talk about the causes of residual glow on the iPhone screen and find out what to do about it? Go!
There are only three reasonable explanations for this problem...
Version 1. Official
Yes, Apple is aware of the "problem" (quoted in this case) and has an official note about it. True, it concerns only computers, but not mobile devices. For those who are too lazy to follow the link, a summary.
Mac displays, Apple Cinema, and Thunderbolt Display use IPS technology. It's a very cool technology and that's why we use it. But! In the case when the screen is reflected for a very long time the same bright picture, when it is changed, faint traces of the previous image may remain on the display. Which disappears after a while.
It would seem, where does the iPhone and iPad? The fact is that IPS-matrices are also installed in these Apple gadgets, which means that such a residual afterglow of the picture is also possible for them.
True, this is very difficult to achieve. iPhone and iPad usage scenarios are slightly different from PC. We can leave the PC turned on with one image for a long time, but on the screen mobile device pictures are constantly changing or it is simply turned off (blocked).
Therefore, if you constantly observe “traces” of programs on your gadget (and not once every three years), then it’s not about IPS technology ...
Version 2. Software
This version should be considered in the case when it is not about some slight glow of the image on the screen, but directly about the full-fledged print of the program. For example, this sometimes happens to me with the keyboard or the multitasking panel. That is, one program is partially or entirely "superimposed" on another.
Here it’s not just a “trace”, but a whole “trace”! What to do in this case? Since this is a common iOS glitch, standard manipulations will suffice:
- Hard reboot device ().
- If "glitches" are repeated often, then update or.
Version 3. Sad
Indeed - this is the most unpleasant outcome of events. The fact is that such phantom prints of images of previously used applications and programs on iPhone display or iPad very often talk about problems with the screen itself.
Moreover, it will not necessarily be visible damage - it may not be cracked, not broken, without illumination defects, etc. That is externally - quite a normal display. But inside...
- The most common case - the screen is crushed. But so neat that you can't see it.
- The marriage of the matrix itself or its poor-quality production. This often happens with "Chinese" components and is especially well observed in the cold season. In the cold, the image begins to "float" and the "traces" are very noticeable.
In this case, the conclusion will be disappointing. It is impossible to restore or repair such a matrix - only to replace it.
And now this is really unpleasant - the cost of the spare part is rather big, and you still need to be able to replace it ... But I really hope that such radical actions will not come to pass and you will find an excuse for the "memory effects" of the screen of your iPhone or iPad in the first two subheadings this article.
P.S.S. Have questions or questions? Would you like to share your opinion, history, way to solve the problem? Welcome to the comments!
Probably, many mobile users have faced the problem of smartphone screen burn-in. This defect does not affect the overall functionality of the display, but its presence greatly impairs the perception of the displayed image. Today we will try to find out what causes such a problem, how to fix it and what can be done to delay its appearance.
What is screen burn?
Speaking as simply and clearly as possible, then burn-in is the fading of the display in its specific area. In the presence of this defect in one or another part of the screen, color reproduction deteriorates, and faded contours or letters appear. The term “burnout” itself cannot be called accurate. It has nothing to do with combustion or exposure to high temperatures. In fact, this is a banal wear of the light elements of the screen on mobile phones.
We can say that the term "burnout" has developed historically. It appeared in the era of cathode ray monitors (CRT for short), as well as televisions. The fact is that the basis of these monitors and TVs were phosphorus components, the glow of which built the whole picture. Over time, these components lost their original properties, due to which the picture became faded. For the most part, they burned out. Despite the fact that the technology of creating screens has changed, as well as the cause of the defect, the wear of light elements continues to be called the specified term.
How common is smartphone screen burn-in and why?
Unfortunately, each owner can face the problem under consideration. mobile phone. Devices with displays such as OLED, AMOLED and Super AMOLED are most prone to burn-in. Screens based IPS matrices suffer from such a defect less, but it can also appear on them. Why are OLED, AMOLED, and Super AMOLED sensors so susceptible to burn-in?
It's all about their structure. These sensors are based on organic polymer compounds that emit light when an electric current passes through them. These connections are represented by LEDs in three colors:
- blue
- red;
- green.
- All diodes have a different shelf life, which is why their wear is uneven. As a result, some of the elements, after a certain time period, continue to work normally, and some lose their original properties. Therefore, there are differences in the saturation of the picture.
- Blue LEDs do not shine as brightly as red and green ones. To make the picture even, more current is supplied to the blue components. As a result, they wear out much faster, and the color palette of the screen goes into green and red tones.
Which part of the display is most likely to experience burn-in?
As a rule, those areas of the display that almost always display one picture are “under attack”. In such cases, the same pixels are used, and they work "without rest". Often, the area on which the touch navigation buttons, the clock, and the notifications tab are located burns out. The appearance of a defect is due not only to permanent job parts of the pixels, but also those colors that are used in the display. At these points, blue and white subpixels burn, and, as mentioned above, blue elements initially wear out faster, because more electricity is supplied to them. white glow also requires more current to pass through the polymeric compounds, and this also accelerates the wear of the screen constituent particles.
In the central part of the display, burn-in appears extremely rarely. This is due to the fact that in this area the picture changes often, the matrix uses different subpixels, so optimal performance lasts longer.
Not only blue LEDs can burn out. Both red and green elements can lose their properties ahead of time. As a rule, mobile gamers face such a problem. As you know, modern entertainment applications have their own virtual navigation buttons or menu areas. At these points, the picture also does not change, so the light components fade faster.
There is one more point worth mentioning. In areas prone to fading, there are not only problems with color reproduction. Also, specific "phantom" images appear there. As a rule, these phantoms are represented by dim silhouettes of virtual navigation buttons, a search engine field, and icons located at the top of the display. In fact, what remains in the affected area is what it continuously displayed for a long time.
Can the display burn-in problem be fixed?
If this defect appeared on a smartphone, then it will not be possible to completely eliminate it. Only a complete screen replacement will help. However, in the absence of money for a replacement, you can use one useful program. It's called AMOLED Burn-In Fixer. No, it does not “revive” the affected LEDs, but it makes the burnt-out areas less noticeable. In general, the mentioned application does three things:
- Carries out a test of the machine and shows in which areas there are burnt points.
- Partially hides if necessary user interface to slow further burnout.
- Corrects colors on burnt areas so that the defect disappears.
- It effectively copes with its task in the early stages of burnout.
- It is free, so such a kind of "repair" can be carried out at no cost.
- It does not work on all smartphones. The device must have operating system at least Android Lollipop (released November 2014). Owners of "apple" phones, this application will not help.
- It is absolutely useless in the later stages of burnout, when the pixels have practically lost their functionality.
Can screen burn-in be prevented?
But here the situation is more pleasant. The user can perform several actions that will delay burnout or even protect the gadget from the manifestation of the defect in question. The list of these actions looks like this:
- Lower the brightness of the display. Everything is simple here - the higher the brightness level, the more current is required, and this accelerates the wear of the LEDs. iPhone owners X can set this parameter to automatically adjust, which will also protect the device from burnout.
- Set the minimum time for screen auto-off so that the diodes do not have to display static textures for a long time when you are not using the device.
- Use Immersive Mode whenever possible. This is the so-called immersive mode, in which the device will hide the notification panel and navigation buttons when they are not in use.
- Pick a wallpaper for the main menu in dark colors. Dark shades practically do not wear out the LEDs; black color does not affect them at all. Also, change the wallpaper periodically to load other light elements.
- Use virtual keyboard having dark shades. With this approach, the degradation of diodes will be even slower.
- Install yourself a navigation application without bright colors. To a greater extent, this recommendation applies to ardent travelers who often need a navigator.
Is it possible in the future to completely get rid of burnout?
It is almost impossible to completely protect displays such as OLED, AMOLED, Super AMOLED from the defect in question. This is due to the peculiarities of their design. However, manufacturers are already going to some tricks that can slow down the aging process of light elements. For example, Samsung is increasing the size of blue LEDs. Thanks to this step, the elements begin to glow brighter, but at the same time, less current passes through them, which means that wear takes longer.
Apple has also taken certain actions to extend the shelf life. On the same tenth iPhone, there is an automatic brightness control mode, thanks to which the load on the LEDs always remains optimal.
Well, we have found answers to two main questions: how to fix screen burn-in programmatically and how to prevent its occurrence. Since progress does not stand still, in the future it is possible to completely get rid of the considered problem. But so far, almost all smartphones are at risk, so it’s better to follow the recommendations mentioned so as not to encounter this unpleasant defect.
Plasma displays offer higher contrast ratios, deeper blacks, and larger panel sizes than competitive displays. However, plasma also has a weak point - the so-called afterimage.
Afterimage or, as it is also called, burn-in occurs due to the wear of the special phosphor coating of the pixels and the loss of their primary light characteristics by the pixels due to their uneven operation for a long time.
A plasma screen "remembers" black sidebars if, for example, a 4:3 picture is often displayed at 16:9, and the afterimage may remain in the form of well-known TV channel logos, menu objects, etc. Modern Plasma TVs are less prone to burnout than models released 3-5 years ago, but still such troubles also happen to them, especially if they are used incorrectly. Therefore, experts note that the most effective way dealing with afterimages plasma screens still remain correct operation and prevention.
With the rules of operation of each specific model plasma TV You can always read the user manual that comes with it without fail. As for the prevention of afterimages, here you should follow a few simple recommendations.
1. so that there is no afterimage — turn off the plasma TV , if you pause it, including when any playback device is connected to it. You should not leave a frozen image on the plasma screen for a long time, even if you are going to leave for just a few minutes.
2. so that no afterimage appears, Withtry not to leave various static on the screen like an on-screen menu or a game system splash screen. By the way, the greatest danger to plasma is just game consoles, since it is in the on-screen game menus that there are always a lot of fixed elements - statistics panels, game inventory, maps, etc.
It is possible that after-images on the screen after a game can be "erased" simply by switching the TV to normal TV or video playback. However, we must remember that toys are the main enemy of plasma. Therefore, before launching a gaming application on a plasma TV screen, you should definitely adjust the brightness and contrast settings manually, or use a special game preset, which is probably provided in the menu of your TV and allows you to quickly configure it for the optimal mode of operation in game conditions.
3. G use the built-in screen cleaning mode wisely (image cleaner). Modern plasma TVs have a separate function to eliminate minor or temporary afterimages on the screen. However, its frequent activation leads to increased wear of the plasma panel and significantly reduces its life. In this regard, you should not immediately start cleaning the screen (wipe or clean) as soon as you notice a piece of the channel logo in the corner of the screen. It may well be that after a while it will disappear on its own, if it has not disappeared after switching to another channel.
4. so that no afterimage appears - VIn some cases, you can use DVD proofreaders , designed to align images on plasma screens. In fact, any movie played continuously also achieves a similar effect. But specially designed video correctors like PlasmaSaver, which clean up afterimages (light burn-in) on the plasma screen due to specially selected movements of light and shadow.
It is worth noting that not so long ago, Plasma Display Coalition testers recently voiced the assumption that a slight afterimage is not due to a change in the phosphor coating, but due to electric charge individual pixels. Thus, it is possible to effectively deal with it with the so-called "white fill" of the screen.
5. don't panic every time when parts of the video image "freeze" on the plasma screen. An afterimage of, for example, a ticker at the bottom of the screen after watching the news or a football score is not a burnout, and they will disappear very quickly on their own.
6. use common sense . Today, few people remember that once even on the screen of a CRT television, an afterimage could appear if it was not operated according to the rules. Modern plasma, when used correctly, can work for many years without any significant burnouts, and in order to damage the screen in this way, you need to try hard.
7. so that no afterimage appears - Withshould know that in the first 100-200 hours of operation of a plasma TV, the process of wear of the phosphor in plasma cells is most active. Because new TVs are recommended to be “run in” . Firstly, it is better to display the image on them in a working format (usually 16:9), and secondly, you can use special screen fills that are simply reproduced in slide show mode and allow you to get the most uniform characteristics of the phosphor over the area of the plasma panel . After 100-200 hours in the break-in mode, the panel will become more stable and can be properly calibrated.
And further: almost every new plasma has the default “Vivid” or “Vibrant” mode, which is designed to work in a brightly lit supermarket hall, but should never be used at home, as it involves very high level image contrast and cause screen burn-in.
If you have any Apple device with a display such as Macbook Pro with a Retina display, then you might notice this phenomenon: if you don’t move or change anything on the running screen for a long time, and then open any full-screen application (especially if it has a gray background), then sometimes you can quite clearly observe that the previous image remains visible, as if it "shines through" through the new.
This is called afterglow, afterimage, or ghost image. Next, I will try to answer questions about how bad it is and whether something can be done about it.
Finder peeking through Dashboard background Afterglow or afterimage
It's called in English image persistence, image retention- this is the effect observed when an image remains on the display for a long time, and after changing the image, the previous image continues to be visible for some time, as if it "sees through" through the new one.
For example, this can often happen with the login screen, if it was displayed on the screen for a long time, and then you still logged in, but you continue to see the outlines of the login window.
First I want to reassure you - everything is in order with your display and you don’t need to run to hand over your Mac, iMac or display under warranty. At least that's what Apple claims, and I tend to trust them, especially since I've been seeing the same thing on my MacBook Pro (Retina, 15-inch, Mid 2012) for almost a year and, although I was nervous at first, then Now I'm quite used to it and I hardly notice this effect.
Having studied the materials on Wikipedia: LCD , IPS panel , Image persistence , Screen burn-in ; I came to the conclusion that Apple is providing truthful information. Indeed, liquid crystal displays, unlike cathode ray (CRT) or plasma displays, are practically not threatened with the prospect of burn-in. Moreover, afterimage occurs not only on the displays used by Apple, it is a common feature of all LCD displays, but due to the IPS technology used in the current generation of Apple displays, this effect is most noticeable.
What to do with the afterimage?
Unfortunately, this effect cannot be completely eliminated, but this does not harm the monitor in the long run. To reduce the chance of the afterglow effect, you can use two features that are enabled by default in Mac OS X, but you could turn them off or change the timing.
Monitor sleep mode
If you leave your computer for a long time, for example, to go out for tea, the sleep function will not only prevent image retention, but also help save energy.
To enable this feature or make sure it is enabled, follow these steps:
- Open " System settings» (System Preferences), for example, via the Apple menu (in the upper left corner).
- Then click on the icon energy saving light bulb signed "Energy Saver".
- Set the value of the “Monitor sleep mode” slider to the minimum comfortable value for you.
- If you have a laptop, then on the second tab "Battery" (Battery) you should also set the slider to turn off the display.
I set myself 5 minutes when working from network adapter and 2 minutes for the battery.
I don’t see the point in the screen saver, because in sleep mode, although they don’t show beautiful pictures, electricity is saved.
Conclusion
So, if you own a MacBook Pro with a Retina display, iMac, Apple Cinema Display, or Apple Thunderbolt Display, chances are you'll be seeing an afterglow effect, also known as afterimage, on your monitor.
This is not harmful to the monitor and does not mean that it is “burned out” or “burned out”, moreover, for some LCD display technologies this is normal.
To reduce the chance of image retention, do not leave a static image on the monitor for a long time, such as by using the Monitor Sleep function.
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