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While TVs are constantly being updated, the two TV display technologies "QLED" and "OLED" also confuse consumers in purchasing. When QLED versus OLED TV, what is the difference between them? Which technology has better performance?
QLED stands for Quantum Dot Light Emitting Diode. Simply put, QLED TV is a kind of LED TV. In particular, QLED uses quantum dot technology to improve the display quality of key images. Compared with ordinary LEDs, QLED can provide better brightness and a wider color gamut.
OLED stands for Organic Light Emitting Diode. OLED is composed of millions or tens of millions of independent pixels, and each pixel can be individually lit when energized, so it is also called a self-luminous display.
When a single OLED pixel is not powered on, it will be turned off, no light is emitted and no color, it looks like the TV is turned off, and the black display is purer.
Mini-LED is actually another screen lighting technology besides LCD and OLED, which is the so-called "backlight mode." At present, Mini-LED is still in its infancy, but with the continuous improvement of technology, this technology can greatly improve the image quality of QLED, and its characteristics are closer to OLED.
The two technologies have their own characteristics. Which one is better? The following will compare the brightness, contrast, viewing angle and other aspects.
The display capability of the black part of the monitor is one of the important factors to achieve high-quality pictures. Pure black can get high-contrast and rich color pictures. In terms of black display, OLED is the undisputed champion.
If a pixel is not energized in OLED, it will not produce any light, so it will display a completely black picture.
In contrast, QLED TVs use LED backlight behind the quantum dot filling layer to increase brightness, and there will be a problem of "light leakage", and the light will overflow to the part that should display a black screen. This is visible to the naked eye and will affect the viewing experience to a certain extent.
Winner: OLED
QLED TVs have a considerable advantage in terms of brightness. They use a separate backlight (not relying on individual pixels to emit light). Quantum dots can have a brighter hue in the color spectrum without losing saturation, and improve light, which is particularly important for viewing in a room with a lot of ambient light.
QLED TVs are considered suitable for viewing HDR content due to brighter highlights in the image and high visibility. Although OLED panels have become brighter, they are still not comparable to QLED TVs.
Winner: QLED
According to Samsung, OLED has beaten all competitors in this part. The use of quantum dots in QLED TVs has improved color accuracy, color brightness and color volume, and has a wider range under extreme brightness levels.
Although it is undeniable that QLED has excellent color display, but at high brightness levels, better saturated colors do not have much advantage under normal viewing conditions, so this part is a tie.
Winner: Tie
Response time refers to the time it takes for each diode to go from "on" to "off". The faster the response time, the clearer the image, especially in action scenes. The response time of QLED varies between 2 to 8 milliseconds, and the response time of OLED is about 0.1 millisecond.
On the other hand, input delay refers to the delay between performing an operation (for example, pressing a remote control button) and seeing the result of that operation on the screen. It has no obvious impact on the screen content, so input delay is more of a concern for gamers. If you turn off all additional video processing or use the TV's game mode, both QLED and OLED TVs can achieve very low input delay levels, and the difference between the two is not obvious.
Refresh rate is also the more important part that gamers pay attention to. It is closely related to frame rate, which is the number of times a TV show, movie or video game sends updates to the TV per second.
Since in QLED TVs, the diodes are arranged in clusters and emit light, individual diodes cannot be switched on and off, which causes the overall slowdown between the "on" and "off" states. Therefore, OLED has unparalleled advantages in response time and refresh rate, making it more suitable for playing games and watching sports events.
Winner: OLED
For QLED screens, the best viewing angle is in the middle of the screen. Whether it is brightness, color, or contrast, it will gradually decrease as the viewing angle becomes larger. Although the severity of different models is different, they can still be perceived by users.
In contrast, the OLED screen will not show a decrease in brightness even at a viewing angle of up to 84 degrees. Although some QLED TVs have improved viewing angles, OLED still has more obvious advantages. Therefore, if you have higher requirements for viewing angles, then OLED TVs are a better choice.
Winner: OLED
OLED has been developing in size for many years. In the early days, the maximum size of OLED screen was 55 inches. Nowadays, the screen size that can be bought in the market has reached 88 inches.
However, in terms of size alone, QLED technology is easier and more cost-effective to produce in larger sizes, and its largest consumer model can currently reach 98 inches.
Winner: QLED
What is QLED?
QLED stands for Quantum Dot Light Emitting Diode. Simply put, QLED TV is a kind of LED TV. In particular, QLED uses quantum dot technology to improve the display quality of key images. Compared with ordinary LEDs, QLED can provide better brightness and a wider color gamut.
What is OLED?
OLED stands for Organic Light Emitting Diode. OLED is composed of millions or tens of millions of independent pixels, and each pixel can be individually lit when energized, so it is also called a self-luminous display.
When a single OLED pixel is not powered on, it will be turned off, no light is emitted and no color, it looks like the TV is turned off, and the black display is purer.
What is Mini-LED?
Mini-LED is actually another screen lighting technology besides LCD and OLED, which is the so-called "backlight mode." At present, Mini-LED is still in its infancy, but with the continuous improvement of technology, this technology can greatly improve the image quality of QLED, and its characteristics are closer to OLED.
QLED VS. OLED
The two technologies have their own characteristics. Which one is better? The following will compare the brightness, contrast, viewing angle and other aspects.
1. Black display effect
The display capability of the black part of the monitor is one of the important factors to achieve high-quality pictures. Pure black can get high-contrast and rich color pictures. In terms of black display, OLED is the undisputed champion.
If a pixel is not energized in OLED, it will not produce any light, so it will display a completely black picture.
In contrast, QLED TVs use LED backlight behind the quantum dot filling layer to increase brightness, and there will be a problem of "light leakage", and the light will overflow to the part that should display a black screen. This is visible to the naked eye and will affect the viewing experience to a certain extent.
Winner: OLED
2. Brightness
QLED TVs have a considerable advantage in terms of brightness. They use a separate backlight (not relying on individual pixels to emit light). Quantum dots can have a brighter hue in the color spectrum without losing saturation, and improve light, which is particularly important for viewing in a room with a lot of ambient light.
QLED TVs are considered suitable for viewing HDR content due to brighter highlights in the image and high visibility. Although OLED panels have become brighter, they are still not comparable to QLED TVs.
Winner: QLED
3. Color space
According to Samsung, OLED has beaten all competitors in this part. The use of quantum dots in QLED TVs has improved color accuracy, color brightness and color volume, and has a wider range under extreme brightness levels.
Although it is undeniable that QLED has excellent color display, but at high brightness levels, better saturated colors do not have much advantage under normal viewing conditions, so this part is a tie.
Winner: Tie
4. Response time, input delay and refresh rate
Response time refers to the time it takes for each diode to go from "on" to "off". The faster the response time, the clearer the image, especially in action scenes. The response time of QLED varies between 2 to 8 milliseconds, and the response time of OLED is about 0.1 millisecond.
On the other hand, input delay refers to the delay between performing an operation (for example, pressing a remote control button) and seeing the result of that operation on the screen. It has no obvious impact on the screen content, so input delay is more of a concern for gamers. If you turn off all additional video processing or use the TV's game mode, both QLED and OLED TVs can achieve very low input delay levels, and the difference between the two is not obvious.
Refresh rate is also the more important part that gamers pay attention to. It is closely related to frame rate, which is the number of times a TV show, movie or video game sends updates to the TV per second.
Since in QLED TVs, the diodes are arranged in clusters and emit light, individual diodes cannot be switched on and off, which causes the overall slowdown between the "on" and "off" states. Therefore, OLED has unparalleled advantages in response time and refresh rate, making it more suitable for playing games and watching sports events.
Winner: OLED
5. Viewing Angle
For QLED screens, the best viewing angle is in the middle of the screen. Whether it is brightness, color, or contrast, it will gradually decrease as the viewing angle becomes larger. Although the severity of different models is different, they can still be perceived by users.
In contrast, the OLED screen will not show a decrease in brightness even at a viewing angle of up to 84 degrees. Although some QLED TVs have improved viewing angles, OLED still has more obvious advantages. Therefore, if you have higher requirements for viewing angles, then OLED TVs are a better choice.
Winner: OLED
6. Dimensions
OLED has been developing in size for many years. In the early days, the maximum size of OLED screen was 55 inches. Nowadays, the screen size that can be bought in the market has reached 88 inches.
However, in terms of size alone, QLED technology is easier and more cost-effective to produce in larger sizes, and its largest consumer model can currently reach 98 inches.
Winner: QLED
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