These are halcyon days for TV technology. Ultra HD 4K is now well established, 8K TVs are becoming more common, HDR is readily available, và streaming puts a near-infinite supply of content at our fingerprints all day, every day.

Bạn đang xem: Oled vs qled: which type of tv wins?


But these are also confusing times for TV technology, with new acronyms and sale terms raining down lượt thích confetti at the wedding of the managing director of a confetti company.

One of the ongoing confusions lies in the comparison between the two technologies competing at the premium kết thúc of the TV market: OLED and QLED. So what exactly are they, what"s the difference, & which is in pole position if you want the best possible picture? Allow us to lớn fill you in.


*


(Image credit: Future / Netflix, The Bubble)

OLED (Organic Light-Emitting Diode) is a type of display tech that consists of a carbon-based film through which two conductors pass a current, causing it khổng lồ emit light.


Crucially, this light can be emitted on a pixel-by-pixel basis, so a bright white or coloured pixel can appear next to one that’s totally black or an entirely different colour, with neither impacting the other.


This is in direct contrast to lớn a traditional LCD TV, which relies on a separate backlight to lớn generate light that’s then passed through a layer of pixels.

Despite many attempts over the years, no TV with a backlight has ever managed khổng lồ completely eradicate the issue of light bleeding from an intentionally bright pixel to those around it.


*
(opens in new tab)
*
(opens in new tab)
*
(opens in new tab)
*
(opens in new tab)
The Philips OLED806 combines an OLED panel with Ambilight to excellent effect (Image credit: Philips/Star Trek Lower Decks, Amazon Prime)

Other advantages of OLED are that the panels are lighter and thinner than a typical LCD/LED arrangement, viewing angles tend to lớn be significantly wider, và response times can be supremely quick.

One disadvantage is that OLEDs are comparatively expensive lớn produce. Prices are steadily getting more realistic – thanks in no small part to LG (currently the largest producer of OLED panels for TVs) selling panels to lớn other manufacturers such as Sony, Panasonic & Philips, increasing both the amount being produced and competition in the shops – but OLED TVs still tend khổng lồ be a bit more expensive than most standard LCD models.

Shaking up the status quo, Samsung Display has recently started producing so-called QD-OLED panels, which it"s currently selling lớn Samsung Electronics. Developed by Samsung, QD-OLED is a combination of theQuantum Dot & OLED technology.

And another manufacturer may soon join the OLED party. Chinese electronics giant BOE unveiled a 95-inch8KOLED TV with a 120Hz refresh rate at Display Week 2022 – and market research firm DSCC claims the company plans lớn commercialise it, though it will be a while before this has an impact on prices, if it ever does.

Sizes can be an issue where OLEDs are concerned. Until very recently, you couldn"t buy an OLED TV smaller than 55 inches. 48-inch OLEDs appeared for the first time in 2020, with the excellent LG OLED48CX leading the way, và 2022 has seen the launch of the first 42-inch OLED TV, the LG OLED42C2.However, as these "small" OLEDs are currently produced in relatively low numbers they tend to lớn be barely any more affordable than their 55-inch equivalents. The panels also tend lớn have lower peak brightness than the latest, brightest, bigger sets, arguably making them less good value.

All OLEDs struggle to reach the same peak brightness levels of even an average backlit model. Even extra-bright OLED models such as the new LG G2 and Samsung S95B struggle to get even half as bright as a flagship QLED, although the perfect blacks vị go at least some way towards compensating for that by creating exceptional overall contrast.

Finally, the organic nature of an OLED panel means it"s potentially susceptible khổng lồ image retention & even burn-in, in a similar way to lớn the plasma TVs of old. This really doesn"t seem to be a widespread problem, though. We"ve never had image retention problems with any of the OLEDs that we"ve tested (or the models that staff members have bought for use at home) & manufacturers bởi build in features to lớn reduce the risk.

That said, those manufacturers vì chưng still feel the need to lớn warn customers about the potential for image retention either in the TV"s manual or as a pop-up message on first installation, so make of that what you will.

QLED pros and cons


Samsung"s flagship 4K QLED for 2021 is the Q95A "Neo QLED", which boasts a Mini-LED backlight (Image credit: Future / Escape From Pretoria, Amazon Prime)

While it may be aboard the OLED train now, for many years Samsung avoided it, instead promoting a rival giải pháp công nghệ called QLED. Although QLED has been mostly associated with Samsung it"s worth noting that other manufacturers such as Hisense, Vizio and TCLalso use the technology, though sometimes under a different name.

QLED stands for Quantum-dot Light-Emitting Diode which, in theory at least, has a great khuyến mãi in common with OLED, most notably in that each px can emit its own light, in this case thanks to lớn quantum dots – tiny semiconductor particles only a few nanometres in size.

These quantum dots are (again, in theory) capable of giving off incredibly bright, vibrant và diverse colours – even more so than OLED.

The problem is that the quantum dots used in current commercially available QLED TVs do not in fact emit their own light. Instead, they simply have the light from a backlight passed through them, in just the same way that an LCD layer does on standard LCD/LED TVs.

In the future, this will likely change. A number of self-emissive QLEDs have already been displayed at industry events, including the world"s first 8K self-emitting QLED display designed by BOE. Unlike traditional QLEDs that use a quantum dot film sandwiched between an LED backlight và an LCD panel, BOE"s self-emissive QLEDs contain quantum dot nanocrystals that can produce their own light when placed in an electric field. This means that, as withOLED, it doesn"t require a backlight, và each pixel can be individually dimmed.

Domestic self-emissive QLEDs are still a way off, however. In the meantime, traditional quantum dots still improve colour vibrancy and control over LCD, narrowing the gap khổng lồ OLED, but this isn’t yet the next-gen, game-changing technology that Samsung has always suggested with its QLED branding.


(Image credit: Samsung / The Unforgivable, Netflix)

OLED’s ability to lớn light each pixel individually gives it an undeniable advantage over QLED. While overall brightness levels are lower, contrast is still incredibly impressive.

Samsung has sought to increase the contrast of its QLED models by switching from standard LED backlights lớn Mini LED backlights for its most premium models, which it refers to as "Neo QLED" TVs. As the name suggests, these backlights use much smaller LEDs – they genuinely resemble sparkly grains of sand – that can be packed in in far higher quantities. By increasing the number of LEDs, the number of independent dimming zones can also be increased, resulting in significantly greater contrast.

Xem thêm: Bài Thơ Mưa Xuân Nhà Trẻ ❤️️ Hình Ảnh Bài Thơ Mưa Rơi, Hình Ảnh Trong Bài Mưa Của Trần Đăng Khoa

The flagship Samsung QN95B, for example, is thought khổng lồ have around 800 independent dimming zones (Samsung doesn"t confirm specific numbers) – that"s a huge increase on the approximately 120 zones of its 2020 equivalent. Of course, because every px of an OLED TV can be controlled independently, it essentially has over 8-million independent dimming zones, but the new Neo QLEDs are clearly a step towards sets that combine the contrast of OLED with the brightness & longevity of backlit sets.