Although they look very similar, there are significant differences between them. What is the best display technology and why?
Buying a TV in 2022 is still very stressful. TV manufacturers use many terms like HDR, Ultra HD 4K, HDMI 2.1, Dolby Atmos, and Dolby Vision, making it very difficult for users to decide what they need and what is worth their money. I recently came across the two most common terms – QLED and OLED TVs. Although the difference is in only one letter, the two techniques are completely different.
If you are also confused by all these TV terms, we will help you understand their meaning below.
LCD is the designation for “liquid crystal display”. It is a flat screen technology commonly used in smart TVs and computer monitors. They are the successors to CRT monitors, with which many generations have spent their childhood. It has also replaced plasma screens, which were among the most popular screens of the past decade. LCD technology is slowly aging with the advent of LED and OLED displays. However, better technology is just one of the reasons LCD screens fail. The latter emits blue light, which affects vision and general well-being. After prolonged use, individuals may experience slightly blurred vision, headache, and tired eyes. Although LED is only an upgrade to LCD screens, it has some advantages that make it one of the most widely used technologies on the market.
Most TVs today fall into the LED category. With the development of LED lights, LED TVs have become one of the most popular choices among consumers, mainly due to the attractive prices, better viewing angles and more dynamic colors compared to their predecessors. LED TVs are also more energy efficient because they use less energy compared to LCD screens that use Cold Cathode Fluorescent (CCFL) lamps. LED lights save up to 30%. OLED TVs are competing in today’s market.
OLED stands for “organic light-emitting diode”. Although they look similar to LEDs at first glance, they are actually completely different technologies. The LED in OLED has nothing to do with the backlight of the display (unlike an LED display). Instead, it refers to the fact that each individual pixel in an OLED is also a very small LED that can produce light and color in a single element. Simply put, OLED TVs do not need a backlight because each OLED pixel produces its own light.
The biggest advantage of this design is the superior level of black color. Unlike QLED or LED TVs, which need to dim the backlight, OLED simply turns off the image point. As a result, it does not emit light and color, so we can talk about true black colors. Without a separate backlight or matrix LCD, manufacturers also have more freedom in designing OLED displays. LG has developed many TVs that completely twist and disappear. LG is also the largest manufacturer of OLED screens, and at the same time it sells them to other companies such as Sony, Vizio, Philips, Panasonic and others. OLED’s direct competition is the upgrade of LED technology to QLED. However, in the future, experts expect that the LED lamp will occupy the throne of the screen.
QLED stands for Quantum Light Emitting Diode, which in simple language means that a QLED TV is very similar to a classic LED display, except that it uses tiny nanoparticles called quantum dots to increase the brightness and dynamics of colors. Although quantum dots seem like a kind of space technology, it is the same lighting principle as LED screens, that is, the use of backlights consisting of hundreds or thousands of LEDs. What really sets a QLED TV apart is a quantum dot filter, a film of tiny particles that emit light of different colors when it hits the light. Thus, these quantum dots create a brighter image and deeper colors.
What is the best display technology?
You now have a better understanding of what the different acronyms mean and how different display technologies work. It’s time to compare them based on the most important criteria when buying a TV: contrast, viewing angles, age, response time, and the like.
Black and contrast
Contrast is the difference between the darkest and lightest part of an image. If the TV is capable of displaying true blacks, the bright parts do not need to be very bright to achieve good contrast levels. When it comes to black levels, OLED is the undisputed champion due to its ability to turn off individual pixels.
If QLED TVs want true black, they need to dim the LED lighting and block out the residual light, which is very difficult to do completely. In some cases, the light may travel to adjacent black pixels. Is the difference noticeable? Sure, especially in dark scenes. QLED TV manufacturers hope to reduce the gap between QLED and OLED contrast quality with small LED lighting.
QLED TVs have a huge advantage when it comes to brightness. Because they use a separate backlight, they can achieve higher brightness than OLED versions. The incorporation of quantum dot technology improves light further by creating brighter shades in the color spectrum without losing saturation. The end result is a screen with enough light to make the image clearly visible even in the brightest rooms.
The individual pixels on OLED displays simply cannot produce the same amount of light. In a dark room, this difference will not be noticeable. But in well-lit rooms or places where there is a lot of daylight, QLED TVs are much clearer, especially if you’re playing HDR content in these conditions.
Until recently, OLED TVs had no competition in this area. With the development of QLED technology, improvements in color accuracy, brightness, and color volume are more than obvious and comparable to OLED technology.
winner: I drew
QLED screens have the best viewing angle in the center, and image quality, brightness and contrast are reduced as you scroll away from the center of the screen. Content on OLED screens does not deteriorate even at the sharpest viewing angles. Some QLED TVs have improved viewing angles with the help of anti-reflective coatings, but OLED maintains a clear advantage. OLED TV is the best choice for watching a bunch of movies or series.
size and price
When OLED technology was still at the beginning of the development cycle, its size stopped at 55 inches. Today we find OLED screens with a diagonal of up to 97 inches, of course at absurdly high prices. QLED technology is simpler and cheaper to make bigger screens.
QLED and OLED TVs may experience image retention from time to time. This occurs when the TV temporarily continues to display part of the image while the original scene has already disappeared. Image preservation occurs when the same visual element has been on the screen for a long time. The retention usually disappears on its own, but in OLED, its permanent version, burning of images, can occur. Burn-in occurs when the brightness of an OLED image point is permanently reduced to a lower state. The only solution to this is to lower all remaining pixels to the same level, but this is not a workable solution.
More tricks and tips in the tricks and tips section of the Internet.