This is the latest acronym - the contest between OLED and LED - just this time, deciphering the difference between the two was once an easier task than it is now. However, if you want to buy the most suitable TV, you need to know the difference between them.
When OLED TVs debuted in 2013, they were praised for their perfect black and excellent color, but they were hit by some brightness because they couldn't compete with LED/LCD TVs. The price gap between OLED TVs is also very large (not to be confused with QLED) and high-end LED/LCD displays. Everything has changed. OLED TVs are brighter than in the past and prices have dropped, but LED TVs still have some obvious advantages. Let's take a look at how the two TV technologies are different and explore their respective strengths and weaknesses.
What is LED?
LEDs represent light emitting diodes. These are small solid-state devices that generate light through electrons through the semiconductor. Now, as a backlight for LCD displays, LEDs can be much smaller than compact fluorescent and incandescent bulbs, but they can be very bright. However, the volume of led is not small enough to be used as a single pixel of a TV because they are too large. This is why LEDs can only be used as backlights for LCD TVs, each of which can illuminate a small cluster of pixels. For more information on this topic, please see our LED and LCD comparisons.
What is OLED?
OLED stands for organic light emitting diode. Quite simply, oled is made with organic compounds that glow when powered. Compared to led, this does not seem to make a big difference, but unlike LED, oled can be very thin, flexible, and very small. In fact, OLEDs can be very small and can be used as separate pixels, with millions of people occupying your TV screen, igniting and shutting down completely completely. Because of this flexibility, when an OLED pixel is turned off, it is completely black.
Currently, LG is the only company that produces OLED panels. Sony and LG have signed an agreement to allow Sony to install LG OLED panels on Sony TVs - just like the Bravia series - but beyond that, you won't find OLEDs on any other TV screens sold in the US. Samsung does manufacture OLED smartphone panels, and there are rumors surrounding Samsung's potential to produce OLED TVs, but the company has recently aggressively promoted its proprietary QLED technology, so this seems unlikely.
LG's OLED TVs and Sony's different image processors (LG's Alpha series and Sony's X1 series) perform differently at work. Top TV manufacturers - Samsung, Sony and LG - make better processors than their competitors, which is why two TVs with the same panel look very different. A good processor can greatly reduce problems such as strips and artifacts, as well as producing more accurate colors.
Which one is better, OLED or LED/LCD?
It's time to make the two technologies oppose each other and see how they are superimposed, such as contrast, viewing angle, brightness, and other performance considerations.
Editor's note: Since OLED TV is still a premium display, we have compared OLEDs to LED/LCD TVs of the same price, which have similar performance potential (except, of course, the price portion).
Black layer
A demonstrating ability can produce deep, dark blacks, which can be said to be the most important factor in achieving excellent picture quality. Deeper blacks allow for higher contrast and richer colors (in other things), and are therefore a more realistic and dazzling image. When it comes to the level of blacks, OLED is the undisputed champion.
LED TVs rely on LED backlights to illuminate behind the LCD screen. Even with advanced dimming technology, selectively reducing LED lights does not need to be fully deployed, leading to the TV history that is hard to produce black blacks and the effects of being called "light bleeding," the light part of the screen creates a smoke or cloth Rum is in the adjacent deep area. Even in the most advanced LED mode, these are inevitable problems, although it is worth noting that Samsung's 2018 Q9 QLED TV seems to be a major breakthrough in LED TV performance. In addition to eliminating these problems, this is A unique exception to this rule.
OLED TVs do not have these problems. If an OLED pixel has no power, it does not produce any light, so it is completely black. For us, this is an obvious choice.
Winner: OLED
brightness
When it comes to brightness, LED TV has a big advantage. Light-emitting diodes have become very bright, but the addition of quantum dots makes them brighter. OLED TVs can also become quite bright, and contrast is no problem compared to such dark blacks.
Adjusting OLED pixels to maximum brightness, extending the cycle not only reduces their lifetime, but also takes a little longer to recover to full black. With these factors in mind, it's important to note that all modern TVs—OLEDs, LEDs/LCDs, and others—produce brightness that exceeds enough brightness. Then consider where the TV will be used. In a dark room, OLED TVs will perform best, and LED TVs will be more dazzling than them, making them more suitable for bright environments.
That said, Sony has introduced some incredibly bright OLED models this year, and LG's next-generation OLEDs are also impressive, making them ideal for shooting in direct sunlight on almost any situation.
Winner: LED/LCD.
Color space
OLEDs used to be the dominant in this field, but quantum dots have greatly improved the color accuracy, color brightness and color of LEDs by increasing the purity of the backlights, making them comparable to OLED TVs. Those looking for TVs with wide color gamut and/or HDR will find OLED and LED models that support these features. The better contrast of OLEDs will give it a slight advantage in HDR, but HDR has an advantage on high-end LED/LCD screens because it produces saturated colors at the high brightness of OLEDs.
LG's new Alpha 9 processor can bring the color of LG oled to the competition, but we have not spent enough time to launch this product in 2018.
Winner: Draw
Response time and hysteresis
Response time is the time it takes for each diode to go from "on" to "off". “With faster response times, motion blur and fewer artifacts (although source material).
The OLED uses its smaller diode as a single pixel to simply blow the LED/LCD TV out of the water in response to time. In contrast, diodes in LED TVs are not only slower, but also behind the LCD screen and illuminate pixels rather than individual pixels. This results in an overall slower change between the "on" and "off" states. In fact, OLEDs currently offer the fastest response times of any TV technology today, making it a winner in this area.
As for input delays, LG has improved OLED TVs in this area, but we have not been able to test OLED TVs from other manufacturers. We do know that from a lagging point of view, OLEDs are not a natural choice, but the minimum input delay for which mode remains to be seen. Due to the lag in the input of LED/LCD TVs, the change from model to model is so large that it is difficult to compare OLEDs with LED/LCD TV competition. It can be said that OLED is undoubtedly the choice of game players.
Winner: OLED
Viewing angle
OLED, once again, is the winner here. On the LED screen, the best viewing angle is the dead center, and the image quality decreases as the color and contrast decrease. Although the severity of the models is different, it is always obvious. An LCD panel produced by LG is called IPS, which has slightly better angular performance than the VA LCD panel, but it does not compete with the VA panel in the black level department.
OLED screens can be viewed as having no degradation in brightness, at extreme viewing angles - up to 84 degrees. Compared with LED TVs, OLEDs have a maximum viewing angle of 54 degrees, and OLEDs have obvious advantages.
Winner: OLED
size
OLEDs have made great strides in this area. When the technology is still in its infancy, OLED screens are often dwarfed by LED/LCD displays. With advances in OLED manufacturing technology, the number of high-quality OLED displays is increasing – now reaching 90 inches – but they are still dwarfed by the largest LED displays, which can reach 100 inches in size, even farther.
Winner: LED / LCD
life
LG said that you must watch 5 hours of OLED TV every day for 54 years before reaching 50% brightness. Since 2013, the fact that OLED TV is only in the wild is still there. For this reason, only we will award such awards to LED/LCD. It is worth having a reliable record.
Winner: LED / LCD
Screen aging
We reluctantly include this section because burn-in is a misnomer (this is just an exacerbation), and for most people, this effect will not be a problem.
What we know of this effect comes from the boxy CRT TV era, when long-term display of still images causes the image to "burn" on the screen. What actually happens is that the phosphor applied to the back of the TV screen will glow for a long time without rest, causing the phosphor to wear and form a burnt image. We think this should be called "depletion." "But... wait.
The same problem also occurs with plasma and OLED TVs because luminescent compounds degrade over time. If you burn a pixel long and hard enough, you will make it darken too early and surpass other pixels to create a dark impression. However, in reality, this is not likely to cause problems for most people - you must deliberately abuse the TV to make it happen. Even the "bugs" (markers) used in some channels often disappear or are clarified to avoid aging problems. You have to watch ESPN every day, watching the game every day in the brightest, even if it is not possible.
This means that potential exists and should be noticed. (This is also a reason for the complete lack of OLED computer monitors on the market, as computer screens are more likely to display still images for several hours in a row.) Because LED/LCD TVs are not prone to aging, they have technically won this battle.
Winner: LED / LCD
power consumption
The OLED panel is very thin and does not require a backlight. Therefore, OLED TVs tend to weigh less than LED/LCD TVs and are thinner. They also need less energy to make them more efficient.
Winner: OLED
price
In the past, LED/LCD TVs easily won this award, but OLED TVs have launched this category on a cost-effective basis.
However, OLED TV is a high-end TV, this period. In fact, OLEDs don't have any budget or mid-range (you'll be lucky to find that any OLED is priced below $2,000). However, LED TVs can range in price from a few hundred dollars to a few thousand dollars, making them easier to obtain than oled. Although the price of high-quality LED TVs is almost the same as the price of oled, the price of LED TVs can still be compared with the price and price.
If this article is only about value, then led/lcd will still win, but OLED has made great progress in a short period of time, and its achievements are worth having. So in general, you still need to choose the most suitable product according to the specific technology.
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