lcd screen burn out made in china

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Image burn-in, also referenced as screen burn-in or ghost image, is a permanent discoloration of sections on an electronic display caused by increasing, non-uniform use of the screen.

The term burn-in dates back to when old monitors using phosphor compounds that emit light to produce images lost their luminance due to severe usage in specific display areas.

Chances are you"ve encountered image burn-in and image retention before, but you didn"t know which one you were seeing. They both have the same visual effects, so it"s easy to mistake them for each other, but there"s one key difference:

Most of the time, these guides explain how image retention works and how you can speed up its recovery process. We want to clear up any confusion you might have about image burn-in and image retention on LCD and OLED displays.

Image retention, also known as ghosting or image persistence, is the temporary effect of images remaining visible on LCDs or OLEDs for a short period, usually a few seconds.

If the images fade away after a short time, you are dealing with temporary image retention. If the images stay permanently, you are dealing with image burn-in.

Image retention doesn"t require any intervention from the user to make it go away – it"ll do that by itself. Retention will often occur before burn-in does on newer display technology like our

using a screen saver, cycling various graphics on the screen to exercise the pixels, and powering off the display whenever possible will help clear the image retention on your display.

These are the same tricks you"ll see advertised as a "cure" for image burn-in, but don"t be fooled. There"s no fix for burn-in, only ways to prolong it from happening.

Before you assume your screen has burn-in damage, try these tips and wait to see if it"s just image retention. Image retention is a harmless and common occurrence on many screens.

Image burn-in is caused by screen pixels that stay activated in a static position for long periods of time.Think of a TV in a lobby or waiting area that"s always playing the same news channel. The news channel footer and logo get burned into the screen permanently, even when you change the channel.

When LCD or OLED pixels stay activated in a static position, they"ll eventually become "stuck" in that position. When this happens, you"ll notice a faded, stubborn image that persists on the screen.

When pixels fail to activate or deactivate entirely, it results in faded images that won"t clear from the screen. This is common in applications using character LCDs where the alphanumeric characters are updated less frequently.

Remember: There"s no way to remove or reduce burn-in after it occurs. If a stubborn image persists for extended periods or after restarting your display, you"re likely dealing with image burn-in.

Even the most advanced displays will experience burn-in at some point, but there are some simple actions you can take to extend your screen"s lifespan before burn-in occurs. With the proper practices, you can get years of outstanding performance from your display without any burn-in effects.

A screensaver is a good alternative if you can"t turn your display off. For displays that don"t need to be ON at all times, it"s helpful to let the screen rest when not in use.

Get those pixels moving! The longer a pixel stays activated in a static position, the closer it gets to being burned in. You can exercise your screen"s pixels with scrolling text, moving images, or changing colors.

For an OLED display, decreasing the contrast will lower the brightness and reduce the rate of image burn. More illumination (brightness) requires more current, which reduces OLED pixel lifespans.

For a LCD display, lowering the contrast will put less stress on the liquid crystals and will help to reduce the rate of pixels becoming weak, or sticking.

Remember that image burn-in is not reversible and can not be fixed once it happens. Whether it is a scrolling effect, rotating pixels, using a screensaver, or turning off the screen when not in use, it"s essential to establish image burn-in preventive measures to help extend the lifespan of your display.

AMOLED burn-in on screens and displays is permanent. Fortunately, you can slow it down and reduce its visibility by using a few simple tricks, which can also increase battery life.

Each pixel within an Active Matrix Organic Light-Emitting Diode (AMOLED) comprises red, green, and blue (and sometimes white) sub-pixels. When they emit light, they decay. Burn-in appears because individual sub-pixels lose brightness at different rates, depending on its color. The most-used light-emitting sub-pixels, such as for navigation and status icons, wear out first, leading to uneven light production.

So the more you use the device, the more visible its burn-in. And the longer you display the same image, the more that image"s outline will persist on the display.

It doesn"t help that many user-interface buttons are white. For an AMOLED panel to produce white light, the display switches on three different sub-pixels in proximity to one another. Each sub-pixel produces a different color: red, blue, and green. Together they appear white to the human eye. However, each of the three colors wears out at different rates, depending on the manufacturer.

For the AMOLED on most smartphones, red sub-pixels are the most durable, followed by green. Blue decays the fastest. When you see burn-in, it"s often caused by a weakening blue sub-pixel. All "fixes" aim at addressing the failing blue sub-pixel. Remember, there are also tools available to fix dead pixels.

Everyone with an OLED display has some burn-in. But often, it"s not fully visible unless you display a solid color at maximum brightness. The Android operating system has access to many apps that detect burn-in damage. The best of these is Screen Test.

Screen Test is ultra-simple: install and run the app. Touching the screen shifts between colors and patterns. If you see a persistent image impression or blotchy coloration, you have burn-in.

For my AMOLED phone, I"ve taken every precaution against screen burn-in. Even so, the display is still a little blotchy after over a year of use. Fortunately, there are no indications of burn-in where the navigation buttons are.

Android made it possible to get rid of the navigation bar in Android 10. Once enabled, gestures allow navigation by swiping your finger on the screen. You can enable Gesture mode by doing the following:

Some might notice that the stock wallpapers in Android aren"t usually suited for OLED screens. OLED screens consume very little energy when displaying the color black, and they do not burn-in when displaying black. Unfortunately, older Android versions don"t include a solid black wallpaper option.

If you don"t have Android 10 or newer, the default Android Launcher isn"t OLED friendly. In Android 5.0, it forces the App Drawer wallpaper to white (the worst color for OLED screens). One of the best launchers for darker colors is Nova Launcher. Not only is it more responsive, it offers better customization options.

Minma Icon Pack changes your bright, screen-damaging icons into a darker, OLED-friendly palette. Over 300 icons are available, which cover the default icons as well as many others.

I recommend installing an add-on. The easiest-to-use add-on is Dark Reader. Dark Reader does more than just change the color of Firefox"s user interface; Dark Reader can change webpages" to black backgrounds with red text, reducing eye strain and burn-in while also improving battery life.

Android"s dark-themed virtual keyboard options can reduce burn-in (and improve battery life). The best of these is SwiftKey, which allows users to change the color of their keyboards. The best SwiftKey theme I"ve seen so far is the Pumpkin theme. If you turn on Android"s dark theme, it automatically turns the keyboard black. In this case, you can simply use the default keyboard.

There are a few other burn-in repair tools, but I don"t recommend them since they either require root access and/or can increase screen damage. However, for reference, you can read about them below and why using them is a bad idea. They fall into two categories:

I do not recommend using this option unless your screen is already trashed. It will cause additional damage but may reduce the appearance of already existing on-screen burn. Inverting colors simply reverses the colors displayed on your screen. Whites become blacks and vice-versa.

If you use the phone with the colors inverted for extended periods of time, it will burn-in the areas surrounding the burned-in navigation bar, reducing its visibility.

Android 4.0 (Ice Cream Sandwich) introduced the Invert colors option to help the visually impaired. It"s not at all designed to combat burn-in and remains experimental. To invert colors, take the following steps:

Several tools claim to reduce the appearance of burn-in by attempting to age the entirety of your OLED panel. These screen burn-in tools flash red, green, and blue (or other) colors on your screen.

The reason is pretty simple: AMOLED burn-in occurs as a natural part of an organic LED"s life cycle. Therefore, tools that claim to fix AMOLED burn-in will cause uniform damage across all AMOLED pixels thus potentially worsening its image quality.

None of these methods will stop the inevitable and slow destruction of your device"s screen. However, using all the recommended options in this article will dramatically decrease the rate at which it decays. That said, some of the oldest AMOLED phones have very little burn-in. The decay of organic LEDs is almost entirely aesthetic, particularly on newer phones.

Image persistence, or image retention, is the LCD and plasma display equivalent of screen burn-in. Unlike screen burn, the effects are usually temporary and often not visible without close inspection. Plasma displays experiencing severe image persistence can result in screen burn-in instead.

Image persistence can occur as easily as having something remain unchanged on the screen in the same location for a duration of even 10 minutes, such as a web page or document. Minor cases of image persistence are generally only visible when looking at darker areas on the screen, and usually invisible to the eye during ordinary computer use.

Liquid crystals have a natural relaxed state. When a voltage is applied they rearrange themselves to block certain light waves. If left with the same voltage for an extended period of time (e.g. displaying a pointer or the Taskbar in one place, or showing a static picture for extended periods of time), the liquid crystals can develop a tendency to stay in one position. This ever-so-slight tendency to stay arranged in one position can throw the requested color off by a slight degree, which causes the image to look like the traditional "burn-in" on phosphor based displays. In fact, the root cause of LCD image persistence is the same as phosphor burn-in, namely, non-uniform usage of the display"s pixels.

The cause of this tendency is unclear. It might be due to accumulation of ionic impurities inside the LCD, electric charge building up near the electrodes,parasitic capacitance,DC voltage component that occurs unavoidably in some display pixels owing to anisotropy in the dielectric constant of the liquid crystal".

Image persistence can be reversed by allowing the liquid crystals to relax and return to their relaxed state, such as by turning off the monitor for a sufficiently long period of time (at least a few hours). For most minor cases, simply continuing to use the computer as usual (and thus allowing other colors to "cover" the affected regions) or turning off the monitor for the night is more than enough. One strategy for users looking to avoid image persistence artifacts is to vary the activities performed on a computer to avoid static colors and hide elements on the screen which are displayed perpetually (such as an OS"s Taskbar). Another strategy is the usage of a screensaver to help during times the computer is left unattended. Covering the entire display area with pure white for an extended period of time is also a useful proactive solution.

BOE, a leading Chinese display manufacturer and the company responsible for the spectacular LED stand at the recent Winter Olympics opening ceremony, has reportedly developed a new technology that it believes could solve the burn-in problem in OLED (Organic Light-Emitting Diode) screens that leaves visible, long-lasting marks. According to Android Authority, OLED screens are made of self-luminous organic materials which inevitably age, with uneven aging leading to burn-in problems on the screens. A patent filing originally made in 2018 but which has only just come to light, suggests that BOE has developed a method that makes the aging process more consistent across the screen by auto-detecting static pixels and adjusting the display position of the next frame to even out the effects of the stationary pixels. The micro movements are small enough that they cannot be detected by the human eye, but could have a major impact on the screen’s lifecycle. [ijiwei, in Chinese]

I"m using this (https://smile.amazon.com/gp/product/B07 ... UTF8&psc=1) 4 line LCD display. Does this type of display have a problem with burn in or anything like that? I"m trying to decide if I need to limit the time the display is on or if I can leave it on 24/7.

LCD panels will fade with time, but the device is likely to last a decade or more before you notice the fade, at least speaking from personal experience with monitors that are on 24/7 for the last decade at my place of employment.

One widely cited problem is that OLED displays don"t last as long: degradation of the organic molecules meant that early versions of OLEDs tended to wear out around four times faster than conventional LCDs or LED displays. Manufacturers have been working hard to address this and it"s much less of a problem than it used to be.

The OLED on my Samsung Galaxy S4 phone started to look a bit yellowed and dingy, like an old book, after a couple of years. The status bar at the top was definitely burned in, like text used to be on old CRT monitors.

Traditional LCD display"s like you linked will work for many decades as long as they are not in direct sunlight and kept between 15°C and 40°C at less than 90%RH. Other environmental conditions can shorten the life span significantly. The LED"s used for backlighting, when used at moderate brightness, will also be usable for decades before dimming is noticeable.

The small inexpensive OLED displays do burn out rather quickly compared to other technologies. This statement from Adafruit for one they sell is dead on IME. https://www.adafruit.com/product/326

Admittedly, it is not used 24/7, but it has had significant use and it"s screen is still as good as the day I bought it (battery still holds a decent charge too)

LG Display has made some big promises for this year. It plans to move 4 million OLED TV panels in 2019, after shipping 2.9 million panels last year. But behind the big boasting, there is now fear. The company is the world"s largest Liquid Crystal Display (LCD) maker, which is still its mainstay, but LCD prices have dropped to a point where it is hitting the firm hard.

Meanwhile, archrival Samsung Electronics has taken advantage of the LCD price drop. Its quantum dot (QD) layered LCD TVs, dubbed QLED by the firm, have performed better than market expectations. This was followed by Samsung in 2018 introducing its MicroLED TV offerings, which are comparable to OLED in terms of black levels. As a nail in the coffin, Samsung Display then confirmed earlier this year that it was developing quantum-dot organic light emitting diode (QD-OLED) panels. When the news of QD-OLED first came out, there was disbelief within LG and then panic, according to LG insiders.

LG"s OLED TV has been a near-decade in the making and has already been in the market for seven years. Going forward, LG"s biggest short-term fear is that its rival Samsung will effectively take over the LCD market from the product-end with QLED. In the long-term, LG faces humiliation if Samsung successfully launches its QD-OLED on the OLED ecosystem that LG effectively built on its own. As the old saying goes, one man sows and another man reaps.

LG Display and LG Electronics have taken huge bets on large-sized OLED panels since 2012. They needed an edge to surpass rival Samsung Electronics, which has topped TV sales since they beat Sony in 2007. LG, shamefully, has been labelled as the perpetual number two. So when Samsung pulled out of using OLED in 2014, moving to using QD-LCD panels instead for its flagship TVs, LG was eager to win applause for holding its ground and having aspirations to make the technological breakthroughs its biggest rival had failed to do.

Samsung"s logic at the time of pulling out of OLED TV panels was one influenced by technology and profits. The leadership had ultimately concluded the "blue pixel problem" -- OLED pixels have a shorter light span than others that cause the infamous permanent image retention, or "burn-in" -- couldn"t be solved in the short-term. Samsung believed OLED was deemed more suitable for smartphones, which have smaller screens, shorter product life-cycles, and consume less power, as it did not face the same issues faced by TVs. Additionally, the LCD industry, which Samsung and LG built together by surpassing Japanese and Taiwanese rivals over the span of 20 years, was still profitable. The decision was fiercely debated, even among the top brass, before it was ultimately made.

LG, meanwhile, took a different route. While it couldn"t solve the blue pixel problem, the company introduced white OLEDs. By using a grid comprised of white OLEDs, LG could overlay a series of colour filters to produce four subpixels: red, green, blue and white. The aim behind using white OLEDs was to protect blue pixels from aging. Samsung lampooned its rival, saying a panel with white pixels was not "true OLED" as it broke the sacred triumvirate of RGB: red, green, and blue. But the move by LG Display had the full backing of the leadership of LG Corp at the time, the holding company of the business group.

Then, LG Chairman Koo Bon-moo, aged 73, passed away in May last year. His son, Koo Kwang-mo, would shortly take over as chairman and CEO of LG Corp, becoming the fourth-generation leader of South Korea"s fourth largest business group. Many predicted there would be a "honeymoon" period where the younger Koo would hold off on restructuring changes and choose to keep the old guards around for council.

Kwon"s career speaks for itself. He is known as a keen strategist within LG that makes bold bets with the long-term view in mind. He has also been called competitive and a pragmatist. During his tenure as CEO of LG Display, when Apple and Samsung were at heads over the copycat issues that eventually resulted in lawsuits from 2009 to 2011, Cupertino drastically reduced its purchase of its rival"s components. Kwon used that vacuum to woo Apple into buying LG Display"s LCDs for smartphones instead.

In March this year, Koo, in a statement read out by Kwon in LG Corp"s annual shareholders" meeting, announced the firm would make "pre-emptive measures to take the lead in the fast-changing market". On the same day, Kwon was named Chairman of the Board of LG Electronics, LG Display, and LG Uplus. In effect, the measures translate to the CEOs of all three companies now needing to answer to him. All three businesses are considering restructuring changes, but the key among them is LG Display.

Meanwhile, LG Electronics last month announced it would no longer produce smartphones in South Korea and make them in Vietnam, a move designed to cut costs.

In TVs, Samsung was losing the battles but its appears the company is now winning the war. Ultimately, Samsung"s QD-LCD, which was renamed from SUHD to QLED in 2017, proved to be another sound business decision by Samsung over LG as the years have gone by. Since 2017, LCD panel prices have taken a nose dive, thanks to the drastically increased production capacity and quality of Chinese rivals, spearheaded by BOE. Due to the lowered prices, Samsung, which retained its traditional manufacturing facilities for LCDs with little increase in overhead, has been buying LCDs cheaply and selling them at a premium with the addition of quantum dots. LG, meanwhile, has taken a beating from the LCD price drop without gaining any meaningful defence from its OLED TVs due to the latter market not yet hitting scale.

Samsung also made a fateful decision in 2017. BOE was investing in a 10.5th generation LCD line that began production in 2018. Around the same time, Samsung Chairman and then-CEO, Kwon Oh-hyun, rejected Samsung Display"s proposal to expand its 8th generation line as there was no guarantee of a return in investment with the drop in LCD prices, according to sources. For displays, the generation reflects the size of the glass substrate: the higher the generation number, the larger the substrate is. Large substrates drastically reduce production costs, especially for large-sized panels, as more panels can be cut out of it with fewer leftovers. Kwon"s rejection was as much of a nod to BOE"s lead as well as a rejection to only sticking to industry standards for LCDs. Samsung Electronics would make profits from the LCD downturn by selling them at a premium price with a QD layer while Samsung Display would be tasked with finding forward-looking solutions, which resulted in QD-OLEDs.

LCDs are essentially commodities, not unlike memory semiconductors, so its value will follow an up-cycle and down-cycle pattern, with another up-cycle expected to arrive after an adjustment of the players. But profitability mirroring its golden days, when it bashed out Plasma Display Panels and CRT after the turn of the century is not likely to return. IHS estimates that LCD panel prices will have a global average cost of $508 for the first quarter of 2019. That figure is expected to decline, with the average global price of LCDs for the fourth quarter of 2023 expected to be around $393.

In technology, Samsung also took advantage of LCD"s strength: brightness. One of the traditional strengths of OLED over LCD is the aperture ratio, or how much light can actually come of a display area. Because OLED can emit light on its own, it is easier to secure brightness compared to LCDs. But the downside is, to take advantage of the higher aperture ratio and increase the brightness you need more electricity, and the increased power consumption leads to the diode"s life span shortening -- another cause of "burn-in". This is exasperated when you want to increase the picture quality, from Full HD to UHD, to 8K, and so on as it requires more and more power. So Samsung amped up the brightness to its maximum capacity for its QLED TVs, with LCD TVs being able to handle the required power surge without any problems. This is also the reason why Samsung was able to launch 8K resolution TVs earlier than LG. Samsung"s 8K TV are already commercialised, while LG is planning to launch its 88-inch 8K OLED in the second half of this year.

What at first seems odd is that in terms of quantity, Samsung"s market share dropped from 21.6% in 2016, to 20% in 2017, and then to 18.7% in 2018. LG, meanwhile, flat-lined at 12.2% in 2016, 12.6% in 2017, and 12.2% in 2018. Essentially, this means that both conglomerates have been losing, or rather intentionally giving up, customers who are purchasing LCD TVs in the low-end. But in turn, both companies are making lots of revenue from their premium QLED and OLED line-ups. QLED and OLED may be based on different technologies, but both are clinching high-end consumers, putting the "which is better debate" to rest, at least in terms of profits and consumer interest. Samsung"s profitability in the super high-end market has also been higher than its rivals.

In an uncertain future, hedge your bets. Samsung is definitely doing just that, with the triple push of QLED, MicroLED, and QD-OLED technologies. Not only that, the South Korean tech giant is also making this a horse race between its own businesses: Samsung"s Visual Display (VD) business, a part of Samsung Electronics, is pushing QLED and MicroLED, while Samsung Display is investing in QD-OLED. This is a Samsung "tradition" that dates back decades. In the 2000s, when it was unclear whether LCD or PDP would rule the next decade of TV displays, the conglomerate did both. Samsung Electronics headed LCD and Samsung SDI, the group"s component making arm, focused on PDP and later manufactured and sold the TV themselves.

These parallel and competitive developments are sound, because the future is extremely uncertain and the display market is fragmented like never before. Apple and Foxconn are reportedly developing MicroLED panels, but are focusing on small devices, rather than TVs. There are reports that Sharp, now owned by Foxconn, is researching large-sized OLED panels, not just the small-sized ones it wants to woo Apple with. Besides these companies, in the display market, there are BOE, Innolux, HannStar Display, AU Optronics, Japan Display, and Panasonic. On the TV set-side, there is Sony, Philips, TCL, Skyworth, Hisense, Toshiba, Haier, Changhong, Vizio, Sanyo, Hitachi, Pioneer, and Mitsubishi, among others involved in the LCD industry. It"s really hard to tell what innovative solution will become the next-generation TV technology, because, despite LG"s large-sized OLED push, it does not have an ecosystem like the one for LCDs, especially since there are few vendors making them.

All-in-all, QLED TVs are doing their job: defending profitability in an uncertain market. It has LG worried enough to launch what it calls the NanoCell TV, which adds colour filters on its LCDs. Samsung"s strategy on MicroLED seems mixed --it has a 219-inch version aimed for enterprise, as well as a 75-inch version aimed at the home market. The 75-inch version showcased this year is significant compared to when it first launched one at 149-inches in 2018, because it means the South Korean tech giant is succeeding in miniaturizing the LEDs. MicroLED uses individual LEDs as pixels, meaning the smaller Samsung can make them, the more pixels it will be able to pack in the same space. The reduction of size also drastically reduces costs -- the biggest obstacle of mass commercialisation for the technology. Sony has followed suit by unveiling its own innovative TV screens too, and what is impressive about these are that they can be made at all.

To be fair, this is not an unrealistic goal. The company enjoys having its affiliate LG Electronics as the main supplier which still has growth potential. According to IHS Markit, 3 million square metres in surface area"s worth of OLED TV panels were shipped in total last year, which was an increase of 65.6% year on year. For comparison, the total industry"s LCD TV panel shipment grew 10.7%, but it is considerably larger at 145 million square metres.

LG Display, despite setbacks caused by the South Korean government in setting up its factory in Guangzhou, China -- due to trade secret-leaking fears and opposition from nationalistic citizens -- has successfully commenced the development of large-sized OLED panels over there. The move was done largely to appease its local clients who tend to insist that production facilities are built in China for logistics and cost reasons. Over 5 trillion won has been earmarked so far for the factory"s production.

LG"s OLED, despite its recent price drop, is still relatively very expensive compared to LCD -- especially those made by Chinese companies. Chinese TV manufacturers even put Apple to shame in terms of cutting costs on components and logistics due to the fierce inter-rivalry among compatriot firms. While there are OLED TV models being sold at under $2,000 in the Chinese market, LG has the tricky task of balancing profits with scaling volume in the context that its LCD sales will not contribute as much in profits as before.

"Twenty years ago, they bought our TVs. Then, ten years ago, they began buying just the LCD panels and the modules. A few years after that, they no longer needed the modules and bought just the LCD panels. Now the manufacturers there make LCD panels just as competitive as it is made anywhere else," said a senior executive of the company, who requested anonymity due to the sensitivity of the issue.

Burn-in -- this is where things can get ugly. Samsung Display is expected to begin QD-OLED production in 2020, with Samsung Electronics expected to launch a commercial product in 2021 that will almost certainly be a flagship model. So even if LG successfully increases its own sales of OLED TVs and woos Chinese clients, its bigger rival will be able to swoop into the ecosystem when it starts to flourish.

Another pain-point for LG will be that Samsung"s QD-OLED will actually use the "problematic" blue pixel as its light source and use red and green QD colour filters that in theory, decrease the chance of burn-in. If Samsung"s QD-OLED is able to achieve this, and avoid burn-in, the panels will actually be able to show "true colours" as it will not use white pixel filters.

One reason LG"s OLED burn-in is more noticeable is because of the use of different light sources for blue, red, and green. Blue pixels dies quickly as it becomes noticeable from the contrast. Samsung"s QD-OLED will only use blue pixels as light emitters, so there is no anomaly; they all die or live together, at least theoretically. The company will likely capitalise on the quantum dot filters to bring out strong colours while avoiding the blue pixel"s high power consumption as much as possible.

"Our own projection for QLED TVs for this year is over 5 million units. We have plenty of time to consider OLED TV panel"s yield rate and address the burn-in problem, that is, if we decide to launch OLED TV at all in the future."

It"s been seven long years since LG first commercialised OLED TVs, and the blue pixel continues to die, causing burn-in, even on the models launched in 2017 and 2018. This indicates two things: firstly, LG cannot solve the blue pixel problem; and secondly, though it may have short-term solutions, any gains in these areas are offset by the fact that TV resolution and feature such as HDR are taxing the TVs for more power, causing the blue pixel to die anyway.

If the victim here was solely LG Electronics, it would not be that serious of a problem, but it now has an ecosystem to think about. LG Display has wooed 15 manufacturers to its so-called "OLED alliance". As more and more of these companies buy OLEDs in bulk, incidents of burn-in will likely rise going forward, and any incident can be a "deal breaker" or a pretext for clients of LG Display to renounce the company for a better deal.

LG Display has pushed itself into a corner with its OLED one-trick pony. The company"s singular drive to push OLED in TVs has blinded it from the LCD price drop and burn-in incidents, that in hindsight, has forced it onto a tight-rope for the next few years.

According to LG insiders, the company has already commenced cost-cutting efforts since Vice Chairman Kwon became chairman of the board in March. Unless the innovative rollable version of OLED showcased at CES becomes massively cheap within a few years, the OLED conundrum will keep burning.

A months-long OLED TV burn-in test on LG models show that after 4,000 hours, logos and static images were vulnerable to permanent image retention, much less than the South Korea electronic company"s assertion of 30,000 hours.

QUESTION: I woke up yesterday morning and it smelled like something was burning. I noticed my computer screen was blank. I tried unplugging the monitor and plugging it back in again. However, the monitor has no sound or colour. Help!

ANSWER: Obviously, it sounds like your computer monitor has burned out. If the on/off LED on the monitor still lights up when it"s plugged in and turned on, though, the problem may be in your PC. If you have another monitor around, hook it up to the computer to make sure it wasn"t the computer"s video card or a related component that failed. If a second monitor comes on OK, then you can be pretty sure the first monitor has blown a fuse or the picture tube. Also check that the wall socket is still supplying power (plug in a lamp or portable radio and see if it works, for example). If you have the monitor plugged into a power bar, check the circuit breaker and power flow there, too. If the monitor itself is the problem, I"d strongly advise that you keep it unplugged until a technician can look at it. A faulty monitor can be a fire and/or electrical shock hazard.

This last step will reinforce the anti-burn-in steps taken in Step 2. While Samsung did claim the home button the S8 and S8+ shift a little bit to prevent burn-in, what about Always On Display? Does the home button shift there too, or does it just stay static? Either way, we"re going to turn off AOD since it does constantly show the home button (which appears to stay in the same spot).

Now that you"ve hidden or turned off everything that could possibly be causing the navigation and status bar burn-in, let"s find out whether or not it worked. Given that the initial burn-in reports began coming in about a week after the S8 was officially released, that should be a decent timeframe for trying out your phone with the bars hidden and AOD turned off.

If you have a theory on why the S8 or S8+ burned in so quickly, be sure to share it with us in the comment section below. Also, let us know if you were able to restore your phone to its former glory by following this tutorial.

The Apple Watch is about as far away as you can get from devices like the Macintosh SE/2 and Macintosh IIfx of the last century, but it seems it could be prone to a problem that dogged those and all computers with CRT screens. Apple wants to make sure that an image which stays on screen for a long time, doesn"t damage the display and appear to stay there forever.

"Electronic Devices With Display Burn-in Mitigation," US Patent Application No. 20200218204, details steps Apple has devised for avoiding the problem. It"s likely that at least some of these are already present in the Apple Watch Series 5, if not earlier models, but this is the first time solutions have been presented.

"Burn-in may result when a static image is displayed on a display for an extended period of time," explains the application. "This can cause uneven wear on the pixels of the display. If care is not taken, burn-in effects can lead to the creation of undesired ghost images on a display."

In theory, this could affect iPhones or iPads which display the same app icons in the same place. However, those devices go to sleep when not used and the Apple Watch is now able to show at least some elements all the time, and so greatly increase the risk of burn-in.

"A watch face image on the display may contain watch face elements such as watch face hands, watch face indices, and complications," says the application. "To reduce burn-in risk for watch face elements, control circuitry in the electronic device may impose burn-in constraints on attributes of the watch face elements such as peak luminance constraints, dwell time constraints, color constraints, constraints on the shape of each element, and constraints on element style."

"These constraints may help avoid situations in which static elements such as watch face indices create more burn-in than dynamic elements such as watch face hands," it continues.

The whole application is about how Apple can electronically mitigate the problem by balancing what it calls "dwell time," the time a user spends actually looking at a screen, and reducing the intensity of that display.

"[Watch face hands] are in motion and therefore do not linger for prolonged periods of time over any given pixel or set of pixels relative to more persistent watch face elements such as indices [and complications]," says the application. "To reduce the burn-in risk... control circuitry can be configured to dynamically adjust the locations... during operation."

So Apple"s proposal is to have the Apple Watch adjust the position on screen of key elements. It may be so subtle that it isn"t immediately obvious, but Apple plans "repeated radial inward and outward movement" to spread "out the pixel wear."

"If desired, the overall watch face artwork that is displayed on display (e.g., hands, indices, and/or other watch face elements) may be scaled in size," continues the application. "For example, always-on artwork may be adjusted to have 95% of its nominal (100%) size to help reduce burn-in effects."

WASHINGTON/BEIJING, July 28 (Reuters) - Chinese leader Xi Jinping warned against playing with fire over Taiwan in a call with U.S. President Joe Biden on Thursday, highlighting Beijing"s concerns about a possible visit to the Chinese-claimed island by U.S. House Speaker Nancy Pelosi.

"Those who play with fire will perish by it," China"s foreign ministry quoted Xi as telling Biden in their fifth call as leaders. "It is hoped that the U.S. will be clear-eyed about this."

While highlighting Taiwan, Xi also stressed that the world"s two largest economies needed to maintain communication on macroeconomic policies, global supply chains, and safeguarding global food and energy security, China"s readout said.

[1/4]A screen displays images of Chinese President Xi Jinping and U.S. President Joe Biden, while broadcasting news about their recent call at a shopping mall in Hong Kong, China, July 29, 2022. REUTERS/Tyrone Siu

Beijing has issued escalating warnings about repercussions should Pelosi - a Democrat like Biden - visit Taiwan. Xi has vowed to bring Taiwan under Beijing"s control, by force if necessary.

The U.S. official told reporters Xi had used similar language about Taiwan before and said the two sides acknowledged differing views that have existed for 40 years. "The conversation between the two about Taiwan, it was direct and it was honest," the official said, while declining to offer more specific details about Biden"s message to Xi.

Asked about the call, Taiwan"s representative office in Washington told Reuters it was grateful to Biden "for underscoring the importance of our shared interest in peace and stability in the Taiwan Strait."

China has grown far more powerful militarily and economically since then and the White House says the administration has been in touch with Pelosi"s office to make sure she has "all the context" she needs to make decisions about her travel.

BEIJING (Reuters) - Zhang Long made his fortune selling Pu’er fermented tea and handcrafted furniture from the mountains of his native Yunnan Province in southwest China.Sipu Enterprises Group Chief Executive Zhang Long poses at his office in Kunming, February 16, 2015. REUTERS/Gerry Shih

Zhang says his Kunming-based Sipu Enterprise Group has rolled out more than 10 versions of SPGnux, including ones in English, Chinese and Arabic. Since the Snowden revelations the number of government offices using SPGnux has more than doubled to 1,600, and his company is profitable, he said, declining to detail financial or sales figures.

He said he is looking beyond China, too, and is courting customers in the Middle East and Southeast Asia, markets he believes also want an alternative to Microsoft.

I have a DB T20 that is projecting a brown smudge/ spot on the screen. It looks like it’s on the lcd if I look through the front lens. I know can see the lens is fine. What could it be? Is it worth opening it to take a look? Also it makes a buzzing sound like a fan sticking for first minute on power up then works fine.