QLED-телевизоры Samsung 2018 года сертифицированы как не подверженные выгоранию и послесвечению экрана в результате тестов, проведённых экспертами международной лаборатории Connect Testlab. Исследование укрепило позиции QLED-телевизоров Samsung как одних из самых надёжных дисплеев, представленных на рынке на сегодняшний день.
Появление таких технологий как High Dynamic Range (HDR) повлекло за собой рост требований к экранам телевизоров. В частности, риск возможного выгорания особенно беспокоит покупателей премиальных моделей телевизоров. Чтобы проверить, способны ли дисплеи выдержать высокие требования к их качеству, эксперты в области ТВ из лаборатории Connect Testlab провели сертификационные тесты, основанные на международном стандарте IDMS. В ходе испытаний особое внимание было уделено качеству отображения HDR-контента.
QLED-телевизоры Samsung успешно прошли стресс-тест и получили сертификаты «не подвержены выгоранию» и «не подвержены послесвечению»[1]. В течение 72-часового испытания устройства проверяли на возможность появления эффектов выгорания («эффект памяти», фантомные изображения и т.д.), которые ощутимо ухудшают качество восприятия контента. Причиной появления дефектов могут быть статичные элементы изображения.
В случае с некоторыми дисплейными технологиями (например, плазменных и OLED-панелей) признаки выгорания начинают проявляться уже после первой минуты работы телевизора при демонстрации статичной картинки на экране с высокой яркостью. В ходе тестирования на QLED-телевизорах отображался узор в виде шахматной доски, где чёрные клетки чередовались с очень яркими белыми. Инженеры, проводившие испытание, добавили на тестовые изображения меняющиеся текстовые элементы и периодически мерцающую белую рамку – это предотвращало автоматическое определение статичного изображения, встроенное в современные HDR-телевизоры. В ходе теста удалось создать условия, аналогичные условиям во время видеоигры с поддержкой станадарта HDR. Помимо обычного анализа эксперты использовали тёмно-серые изображения с уровнем яркости 10 нит, чтобы проверить, становятся ли тёмные пиксели светлее.
Исследования продемонстрировали, что интенсивные испытания QLED-телевизоров Samsung не сказались на качестве изображения. Теоретически, устройства можно оставлять постоянно включёнными без риска того, что элементы изображения, такие, например, как логотипы телеканалов, оставят фантомный след или приведут к выгоранию отдельного участка дисплея.
Учитывая, что остаточное изображение и выгорание значительно влияют на качество восприятия, особенно после отображения кадров в формате HDR с экстремальными уровнями яркости, устройства линейки Samsung QLED – одни из лучших современных телевизоров для тех, кто планирует приобрести устройство класса премиум. Покупатели смогут максимально использовать визуальные возможности своего телевизора без негативного влияния на качество отображения или постоянных повреждений.
[1] Со всеми критериями тестирования можно ознакомиться на сайте https://www.connect-testlab.com/
Certified by Testlab: No Burn-in with Samsung QLED TV
TV experts from video magazine put Samsung QLED TVs through a 72-hour stress test in the connect Testlab and certify the non-appearance of undesirable visual effects
Samsung QLED TVs are certified as the burn-in free TVs by video, an acclaimed German tech magazine. Conducted in conjunction with the connect Testlab, a global testing lab, all 2018 Samsung QLED TV series were proved free of burn-in and afterglow reaffirming QLED TVs’ position as one of the most durable displays on the market today.
The requirements for TV displays are made ever more demanding by technologies such as High Dynamic Range (HDR). The risk of putative burn-in is of particular concern to TV customers in the premium segment. To see if displays stand up to the exacting performance requirements, the TV experts from video and connect Testlab carried out certification test based on the Information Display Measurements Standard (IDMS), an international norm for panel measurements, and concentrated on QLED TV’s HDR content display quality.
Samsung’s QLED TVs passed the stress test and received the certificate for ꞌno burn-inꞌ and ꞌno afterglowꞌ1. In a 72-hour endurance test, the testers performed measurements on Samsung QLED TVs to check their putative burn-in effects, which may be caused by static picture elements. These effects, also referred to as ꞌmemory effectꞌ, ꞌghostingꞌ, ꞌimage retentionꞌ, ꞌsticky imageꞌ or imprecisely as ꞌburn-inꞌ, tangibly impair the picture quality of a television.
In the case of some display technologies, memory effects will start glowing after one minute of TV use if static picture elements are shown on their screen in high luminosities. In the test, the TVs were therefore made to display a checkerboard pattern for deep black and very bright white values for longer periods of time. The test engineers added variable text elements and an intermittently blinking white frame to the test picture so that the automatic stills detection customary for modern HDR TVs could not spring into action. This helped the testers create similar conditions as in HDR games. In addition to the standard analysis, the testers used dark gray images with brightness values of 10 nits– which will show if dark pixels are brightened up.
The measurements showed that the tested Samsung QLED TVs remained unaffected by the rigorous tests. The TV can thus theoretically be left on permanently without picture elements like network logos leaving an afterglow or burning in.
Taking into account that the quality of a TV screen is strongly impaired by afterglow and burn-in – especially after emitting HDR quality pictures with extreme brightness values – Samsung QLED TV is a product of choice among many other modern TVs for those planning to invest in a high-end TV. It guarantees powerful visual capabilities without potential memory effects or permanent damage.
“Anyone who is particularly sensitive to ghost images and unwilling to run any risks over many years of use will be on the safe side with LCD or QLED, respectively,”2 conclude the test experts.
How Samsung’s QLED TV Earned video Magazine’s ‘Burn-In’ Certification
Samsung’s QLED TVs recently became the first TVs to be certified burn-in free by video, an acclaimed German tech magazine.
The magazine’s comprehensive evaluation assessed vulnerability to burn-in and afterglow, which can permanently impair picture quality. The results of the test proved that Samsung’s TVs were as free of both, and demonstrated what makes QLED TVs some of the most durable displays on the market today.
The Details
‘Burn-in’ refers to the phenomenon in which static images (such as channel logos, or the health bar in a console game), displayed for an extended period of time, leave a permanent outline on a screen.
Conducted in conjunction with connect Testlab, a world-renowned testing lab, the 72-hour stress test evaluates a TV’s ability to stand up to the exacting levels of performance that we require in TVs today, focusing specifically on the portrayal of HDR (high-dynamic-range) video.
With some display technologies, memory effects will already keep glowing after one minute of TV use if static picture elements are shown on their screen in high luminosities. In the test, the TVs were therefore made to display a checkerboard pattern for deep black and very bright white values for longer periods of time. The test engineers added variable text elements and an intermittently blinking white frame to the test picture so that the automatic stills detection customary for modern HDR TVs could not spring into action. This helped the testers create similar conditions as in HDR games. In addition to the standard analysis the testers used dark gray images with brightness values of 10 nits– which will show if dark pixels are brightened up. The findings indicate that QLED TVs are unaffected by burn-in and afterglow, and that fixed images may be displayed on them without risk, regardless of duration.
Why Burn-in Matters
Assessing a TV’s susceptibility to burn-in is key to determining how long it will last – and ultimately whether it’s worth your money. Although all screens get dimmer with age, burn-in’s adverse effect on picture quality can significantly shorten a TV’s lifespan.
On average, based on typical use, consumers should expect their TV’s picture quality to remain roughly the same for anywhere from seven to ten years. What’s interesting to note is that the definition of that term – ‘typical use’ – has expanded in recent years with the rise of binge-watching video and the development of exciting ‘smart TV’ functionalities. Now, on a typical day, we may switch on the TV to watch the latest episode of a favorite show, start a gaming session with friends, or manage our home’s IoT appliances.
Speaking of enjoying dynamic content, these days, so many of our favorite shows and games feature HDR support, which means video that’s brighter and more immersive than ordinary content. As time goes by, however, HDR content can wear down a TV – accelerating burn-in and reducing its lifespan.
In addition, as illustrated by innovative functions like Ambient Mode, which allows QLED TVs to display beautiful, aesthetic-enhancing images when switched off, Samsung is constantly exploring ways to help people get more use out of their TV. Each new function results in TVs being utilized for longer periods of time, which makes durability issues like burn-in more important than ever.
How QLED TVs Deliver
The source of QLED TVs’ durability lies in Samsung’s use of inorganic Quantum dots. Unlike display technologies based on organic materials, Quantum dots do not degrade over time. This allows QLED TVs to offer exceptional picture quality that not only lasts much longer than other displays, but is guaranteed to be burn-in free.
The experts at video are not the first to put Samsung’s guarantee to the test. In fact, industry-trusted TV review site Rtings.com recently conducted a stringent series of tests that measured image retention in dozens of TVs from the market’s leading brands. The pivotal portion of the tests, which reflected typical use conditions, placed colorful logos on the TVs for 10 minutes and measured how many minutes, if any, it took for the imprinted images to disappear.
Samsung’s QLED TV passed with flying colors, earning a perfect score for image quality and lack of burn-in. When subjected to the same tests, however, other displays fared far less well – succumbing to burn-in, and in doing so, further confirming QLED TV’s industry-leading durability.
What it means for Samsung
Rtings’ assessment and video’s certifications are products of Samsung’s steadfast commitment to offering consumers the very best in terms of picture quality.
As Doochan Eum, Samsung Electronics’ Vice President of Visual Display Business, explains, “Consumers simply don’t want to put up with a display that’s not built to handle how we use our TVs today. Quantum dots’ longevity and ability to express 100 percent color volume allow QLED TVs to provide a level of picture quality that will remain consistent and captivating for many years to come.”
