burned lcd module made in china

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.

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.

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 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.

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.

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.

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 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"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.

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.

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.

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".

SEOUL, March 31 (Reuters) - South Korean panel maker Samsung Display has decided to end all of its production of liquid crystal display (LCD) panels in South Korea and China by end of this year, a spokesperson said on Tuesday.

Samsung Display, a unit of South Korean tech giant Samsung Electronics Co Ltd, said in October that it suspended one of its two LCD production lines at home amid falling demand for LCD panels and a supply glut.

“We will supply LCD orders to our customers by end of this year without any issues”, the company said in a statement. (Reporting by Heekyong Yang; Editing by Kim Coghill)

The invention discloses a method for preventing liquid crystal display (LCD) DDC from false burning. DDC burning of the method is as follows: EDID stored in a FLASH is sent to a LCD in a reverse direction, or the EDID stored in an EEPROM is sent to the LCD in a positive direction. By adopting the method, compared with the prior art, a command does not need to be sent to judge that which DDC burning mode is adopted by a machine to be burnt, namely, whether the EDID is sent in the positive direction or the reverse direction, MCU software does not need to respond to the storage type of the EDID of the machine, and the corresponding burning mode can be automatically selected according to the burning results at the first time. The method has extremely strong adaptability.

Technical field the present invention relates to the data burning method of LCD, relates in particular to a kind of false method of burning of liquid crystal display (LCD) DDC that prevents.

The background technology LCDs generally comprises striograph figurate number group or digital visual interface, and high-end LCD can comprise two interfaces simultaneously, and these two interfaces all are to carry out data communication by DDC (DDC) with main frame.Before using DDC, EDID (extending display identification data) need be burnt on the LCD, EDID comprises the basic parameter of display device, as manufacturer, name of product, maximum row field frequency, supported resolution etc.

Summary of the invention the object of the invention provides the false burning of a kind of DDC of preventing, and need not to judge by the mode that says the word the false method of burning of liquid crystal display (LCD) DDC that prevents of the burning mode of DDC.

The present invention is by the following technical solutions: prevent that DDC method for burn-recording in the false method of burning of DDC from being will leave EDID among the FLASH in to adopt and oppositely be sent to LCD, the employing forward that perhaps will be placed among the EEPROM is sent to LCD.

Above-mentioned DDC burning formula is when first Monitor begins burning, directly the negate of EDID data is sent, after waiting for certain hour, reading EDID data and the EDID raw data of LCD Monitor compares, if the data of reading are entirely for reverse, it is the forward burning that then burning formula is changed the burning mode automatically, otherwise still takes reverse burning mode.

Embodiment liquid crystal display (LCD) DDC method for burn-recording of the present invention is that the EDID employing of will leave among the FLASH oppositely is sent to LCD, and the employing forward that perhaps will be placed among the EEPROM is sent to LCD.DDC burning formula is when first Monitor begins burning, directly the negate of EDID data is sent, after waiting for certain hour, reading EDID data and the EDID raw data of LCD Monitor compares, if two data of reading are entirely for reverse, it is the forward burning that then burning formula is changed the burning mode automatically, otherwise still takes reverse burning mode.After DDC burning success, with regard to fixedly burning mode.When if the DDC burning need be reselected EDID, according to above-mentioned steps burning again.

See also shown in Figure 1, first Monitor begin burning==" negate of EDID data sends==" the EDID data of reading LCD and the comparison of EDID raw data==" two data are identical==" with the negate of EDID byte to send==" fixedly burning mode, the EDID data of perhaps reading LCD compare with the EDID raw data==" two data complete different==" with the EDID byte get the forward transmission==" fixedly burning mode.

1. one kind prevents the false method of burning of liquid crystal display (LCD) DDC, it is characterized in that: prevent that the false DDC method for burn-recording that adopts that burns of liquid crystal display (LCD) DDC from being that the EDID employing of will leave among the FLASH oppositely is sent to LCD, the employing forward that perhaps will be placed among the EEPROM is sent to LCD, above-mentioned DDC method for burn-recording is when first Monitor begins burning, directly the negate of EDID data is sent, after waiting for certain hour, reading EDID data and the EDID raw data of LCD Monitor compares, if the data of reading are entirely for reverse, it is the forward burning that then burning formula is changed the burning mode automatically, otherwise still takes reverse burning mode.

2. a kind of false method of burning of liquid crystal display (LCD) DDC that prevents according to claim 1 is characterized in that: after above-mentioned DDC burning success, with regard to fixedly burning mode.

3. a kind of false method of burning of liquid crystal display (LCD) DDC that prevents according to claim 1 and 2 is characterized in that: when the DDC burning need be reselected EDID, according to above-mentioned steps burning again.

SEOUL, March 31 (Reuters) - South Korean panel maker Samsung Display has decided to end all of its production of liquid crystal display (LCD) panels in South Korea and China by end of this year, a spokesperson said on Tuesday.

Samsung Display, a unit of South Korean tech giant Samsung Electronics Co Ltd, said in October that it suspended one of its two LCD production lines at home amid falling demand for LCD panels and a supply glut.

“We will supply LCD orders to our customers by end of this year without any issues”, the company said in a statement. (Reporting by Heekyong Yang; Editing by Kim Coghill)

Tomb Sweeping Festival, or Qingming, on April 5th, is just one of several holidays in which the ritual is performed. Elaborate paper offerings are also burned at the Hungry Ghost Festival, a Buddhist and Taoist holiday that occurs in the summer and offers an opportunity to burn offerings for people who were buried without a funeral.

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.