LED|OLED|ULED|QLED advantage comparison

In recent years, display technology has developed faster and faster, and various new concepts have also hit like a flood. LED, OLED, ULED, QLED, the most troublesome than these various LED concepts, merchants The description is also confusing for consumers. Let’s take a look at the difference between different LED displays.

So many “X”-LEDs, can you tell them clearly?

"X"-LED Concept Explanation


LED displays are very common in our lives. Large screens on various stages and outdoor commercial advertisements will often use LED displays, and LED lights used in LED displays are common Light-emitting diodes, some friends may find it strange here. Is this the same as LED TVs? If they are the same, isn’t an LED TV an LCD TV? How did it become a light-emitting diode?

There are two types of LCD TVs in daily life: LCD and LED. Let’s focus on LCD TVs that use LEDs.

LED TVs use liquid crystal panels as the display medium and light-emitting diodes as the backlight module. When light passes through the liquid crystal layer, the liquid crystal molecules are controlled to be deflected to different degrees to show different degrees of brightness. Then through a layer of color filter, the white light is colored, and finally presented in front of us. Therefore, generally speaking, LED displays will be thicker.


The LED backlight technology has been used for many years, but its heavy features can no longer meet the needs of today’s consumers. In order to be able to stand out, major manufacturers are also “the eight immortals cross the sea, each show their magic”, research and development of various display technologies, and added letters in front of the LED to distinguish them, so as to put a specific label for their high-end TV. For example, Samsung’s QLED, LG’s OLED, and Hisense’s ULED look similar, but they are completely different technologies.



ULED is a display quality technology launched by Hisense. It adopts multi-zone independent backlight control and HiView image engine technology. It is stronger than LED in contrast and color gamut. It uses 2 times more backlight sources than ordinary LED screens, and The screen is accurately divided into 576 areas to achieve finer picture quality adjustment, but in fact ULED is also LED technology.


ULED’s screen display technology can be said to be the best technology of Hisense manufacturers. Hisense’s ULED TVs do perform very well in picture quality, even comparable to OLED TVs, but their strength in the layout of the manufacturer is weak, like singing a one-man show. Conducive to the development of technology.



QLED is an LED TV equipped with quantum dot technology. The QLED TV that combines quantum dots and LEDs has amazing color performance. Quantum dots are an emerging luminescent material. They do not directly emit the colors we see. Instead, they disperse the LED backlight and act as a filter in an LED panel.


Although quantum dot LED TVs perform well, like ULED, QLED is also a concept used by manufacturers, and not all quantum dot LED TVs are called QLED.


OLED refers to organic light-emitting diodes. The display screen of this kind of TV is made of organic materials that can emit light by itself. Each pixel can emit light by itself, and no backlight is needed. The display itself is the backlight. Using very thin organic materials, the organic materials will emit light when the current passes through, and in the case of black display, the OLED will not emit light at all, so the black will be more pure in the TV with the OLED screen, and it can also significantly save power. In addition to LCD TVs, there are also a large number of applications in the field of mobile phones.

Mobile phones made of OLED materials

After reading the general content of these display technologies, let’s briefly summarize the advantages of the three display quality technologies: LED, OLED, ULED, and QLED.

Introduction to the advantages of LED, OLED, ULED, QLED

"Color gamut": Q&U wins

our actual observation It is found that QLED and ULED are richer in color display, and the colors are more pure. U uses backlight + color filter film, and Q uses quantum dot technology, which have natural advantages in color display.

"Brightness": L wins

QLED using high-brightness LED modules, improved backlight structure, the highest brightness can reach 2000nit (iPhone8 highest brightness 625nit). The characteristics of OLED’s organic light emission are not satisfactory in terms of brightness. High brightness will cause the loss of organic light-emitting materials, and after a long time of use, the brightness will also be attenuated to a certain extent.

The performance of several other products under excessively high brightness is not satisfactory. Only the LED still maintains excellent picture quality display under high brightness. At present, the highest brightness of LED can reach 4000nit, which is much higher than other LEDs of the same type.

"Black level": O wins

In the actual test, it can be clearly seen that the black of OLED is more pure. There is no doubt that OLED can not emit light at all when displaying black, and ULED can almost reach the level of OLED. In contrast, although QLED has local light control technology, it still cannot control each pixel well.

"Refresh rate": O wins

When watching sports events or Hollywood blockbusters, the high refresh rate can better enjoy the various shocking effects in the film, and will not produce smearing and blurry pictures due to slow TV response. After receiving the signal, the liquid crystal molecules of the QLED need a mechanical rotation process, while the OLED only needs to turn on and off the corresponding pixel after receiving the electrical signal.

Who will be the final winner?

After reading so many comparisons, the “X” of major manufacturers-LEDs can be said to be indistinguishable. Some are indeed innovations in luminescent materials and lighting methods, and some are only conceptually. Definition. In display technology, various manufacturers have different implementation methods, no one is omnipotent, and there is always a certain complementary relationship. It is too early to talk about who is the real winner. 

For consumers, “only buy the right ones, not the expensive ones” is the eternal truth, and consumers will only pay for the cost-effective products. Who can quickly improve technology and reduce costs, who can become the ultimate winner


ULED (Ultra LED) and OLED (Organic Light Emitting Diode) are both names for display technologies, but there are some important differences between them.

ULED is a display technology developed by the Hisense TV brand. ULED TVs use native LED backlight technology combined with some special optimization techniques to provide higher brightness, wider color gamut and better contrast. Through precise backlight control and image processing technology, ULED TVs can present more realistic and delicate image effects.

OLED is an organic light-emitting diode technology that uses layers of organic substances through which electricity is passed to produce light. OLED displays are self-illuminating and do not require a backlight. This enables OLED displays to offer deeper blacks, higher contrast and wider viewing angles. OLED displays are also capable of self-illumination control at the pixel level, so true blacks and finer details can be displayed.

In general, ULED is an LCD display technology using backlight technology, which provides better picture quality through optimization and improvement. OLED is a display technology based on self-emitting diodes, which has higher contrast, better color performance and wider viewing angle. Each technology has its unique advantages and applicable scenarios, and the choice should be determined according to specific needs and personal preferences.

ULED (Ultra LED) and QLED (Quantum Dot LED) are both names for TV display technologies, but there are important differences between them.

ULED is a display technology which is an improved LED-backlit LCD technology. ULED TVs provide higher brightness, wider color gamut and better contrast through precise backlight control and image processing technology. It uses some special optimization techniques to achieve more realistic and detailed image effects.

QLED is a display technology developed by Samsung Electronics, which is a quantum dot LED display technology. QLED TVs use tiny quantum dots (quantum dots) to improve picture quality. These quantum dots emit light of a specific color by exciting a light source. This technology can provide higher brightness, wider color gamut and more accurate color performance, making the image fuller and more lifelike.

In general, both ULED and QLED are LCD display technologies, but they differ in backlighting and image processing. ULED provides better picture quality by optimizing backlight and image processing; while QLED provides higher brightness, wider color gamut and more accurate color performance by using quantum dot technology. Which technology to choose depends on individual needs and preferences.

“LED vs QLED vs OLED vs ULED” does not have a clear answer to determine which technology is best, as each technology has its own unique advantages and applicable scenarios, and it also depends on individual needs and preferences.

– LED (Light Emitting Diode): LED is the most common backlight technology, which provides high brightness and high reliability. LED TVs are usually relatively inexpensive and perform well across a wide range of screen sizes and resolutions. However, its contrast and black performance may not be as good as other technologies.

– QLED (Quantum Dot LED): QLED TVs use quantum dot technology to provide higher brightness, wider color gamut and more accurate color performance. It has excellent brightness and color rendering capabilities, and does a good job of resisting burn-in. However, since it still uses LED backlighting, there may be limitations in terms of local contrast and black representation.

– OLED (Organic Light Emitting Diode): The OLED display has the characteristics of self-illumination and does not require a backlight. It delivers excellent contrast, true blacks, and fine detail, all while boasting wide viewing angles. OLED TVs are excellent in terms of color and black performance, but are more expensive and have the potential for screen burn-in.

– ULED (Ultra LED): ULED is a display technology developed by the Hisense TV brand, which provides higher brightness, wider color gamut and better contrast through backlight control and image processing optimization. ULED TVs have improved picture quality, but specific performance and advantages vary by TV brand and model.

To sum up, LED, QLED, OLED and ULED each have their advantages and applicable scenarios. Choosing the technology that’s best for you comes down to personal preferences for brightness, contrast, color performance, price, and other specific needs. It is recommended that when purchasing a TV, refer to the product specifications, features and prices of various technologies, and compare user reviews of various brands and models to help make the most suitable choice.

Quantum ULED and QLED are both similar terms, but they actually refer to two different technologies.

Quantum ULED is a display technology of the Hisense TV brand, which combines quantum dot technology and ULED technology. Quantum dot technology uses tiny quantum dots to improve image quality, providing a wider color gamut and more accurate color representation. ULED is an improved LED backlight technology that provides better brightness and image quality by optimizing backlight and image processing. Therefore, quantum ULED TV takes advantage of the dual advantages of quantum dot technology and ULED technology to provide higher brightness, wider color gamut and better contrast.

QLED, on the other hand, is a display technology developed by Samsung Electronics that uses quantum dot technology. QLED TVs use quantum dots to achieve higher brightness, wider color gamut and more accurate color performance. It is technically very similar to quantum ULED, both using quantum dot technology to improve image quality.

In short, both quantum ULED and QLED use quantum dot technology to provide better color performance, but quantum ULED is a Hisense TV brand technology that combines quantum dot technology and ULED technology, while QLED is Samsung Electronics’ technology that focuses on utilizing Quantum dot technology to enhance image quality. While somewhat similar, the two may differ in specific implementation and brand support. The final choice still depends on personal preferences, needs and brand preferences.

Between OLED (Organic Light Emitting Diode) and LED (Light Emitting Diode), it is difficult to say which display is better, because they have their own advantages and applicable scenarios.

OLED displays offer many advantages:
1. Contrast and black performance: OLED displays can achieve true blacks because each pixel can be turned on or off independently. This results in excellent contrast and more detailed black representation.
2. Viewing angle: OLED displays have a very wide viewing angle, that is, the brightness and color of the image are hardly affected regardless of the viewing angle.
3. Color performance: OLED displays are capable of delivering bright, accurate and vivid colors with a wider color gamut.

However, LED displays also have their advantages:
1. Price: Generally, the price of LED display screens is relatively low, especially on larger screen sizes.
2. Brightness: LED displays can provide higher brightness levels, which is very important for viewing content in bright environments.
3. Reliability: LED displays generally have a longer lamp bead life than OLED displays, and there is no burnout problem.

So if you’re more concerned about contrast, black performance, and wide viewing angles and accurate color performance, then an OLED display might be more for you. And if you pay more attention to price, high brightness and long life, then LED display may be more suitable for your needs. The final choice will depend on your specific needs for image quality, budget, and usage environment.

ULED and outdoor LED screens are designed for different application scenarios and needs. It is difficult to directly compare which is better, because they have their own characteristics and advantages.

ULED provides better brightness, color and picture quality performance by optimizing backlight and image processing. It is mainly used in home TV or indoor scenes, suitable for watching movies, TV shows and games in a relatively controlled light environment.

Outdoor LED screens are specially designed for outdoor applications, featuring durability, waterproof, and dustproof, which can withstand harsh weather conditions and long-term operation in outdoor environments. Outdoor LED screens usually have high brightness, wide viewing angles and good visibility, and can be used in outdoor billboards, stadiums, outdoor events, etc.

Therefore, ULED and outdoor LED screens have obvious differences in technology and design, and are suitable for different scenarios and needs. If you need to watch TV shows and movies in a home or indoor environment, a ULED TV might be a better fit. And if you need to display advertisements or play videos for outdoor activities in outdoor places, outdoor LED screens are a more suitable choice.

It is important to choose the right product based on specific needs, considering factors such as environmental conditions, visibility, budget and purpose of use.


Hola LED