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With technological advancements, the world of TVs has grown to be diverse and captivating. One particular term that has gained popularity in recent years is QLED, which stands for Quantum Light-Emitting Diode. QLED TVs are considered to be at the cutting edge of display technology, offering stunning visuals and a remarkable viewing experience. However, the distinction between QLED and another prominent display technology, OLED (Organic Light-Emitting Diode), can be quite confusing for consumers. In this article, we will delve into the world of QLED and explore its key differences from OLED TVs, as well as highlight the outstanding features that make QLED a desirable choice for those seeking exceptional picture quality and immersive entertainment.
QLED TV is one of the new TV models with extremely high display quality that is being noticed and sought by consumers today. Join Tnhelearning.edu.vn to find out what QLED TV is and its outstanding features in the article below to understand why this TV is so attractive!
What is a QLED TV?
QLED TV (short for Quantum Light-Emitting Diode ) is developed based on LED TV screen technology , combined with Quantum Dot quantum dot technology to give users a wonderful color experience.
Quantum dot technology has been applied by many TV companies to their products, each with different names: LG calls it NanoCell , Sony calls it TRILUMINOS , Samsung calls it QLED .
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Structure and operating principle of QLED
QLED TVs work by placing a magnetic dot layer in front of the LED backlight layer. These dots are used to display images because of their ability to give different colors depending on the size of the dots. Because these dots can emit their own colors, the displayed colors can be reproduced in more detail.
Quantum dot panels will have 50% wider color gamut than conventional technology LCD panels .
In conventional LCD screens and LED screens, the color is determined by a filter, which does not produce completely accurate colors.
Conventional TVs use LED backlighting when emitting a red image, maybe some spots on the TV are orange. However, on QLED TVs with thousands of microscopic quantum dots, each color level will be clearly represented, providing images with more accurate colors and clearer contrast.
The outstanding advantages of QLED screen TVs
High aesthetic design
QLED TVs are always improved and upgraded in terms of aesthetic design. In addition to the traditional flat screen model, many high-end QLED TVs now have extremely sophisticated and trendy curved screen designs.
Top quality images
QLED TVs use 4K resolution with a pixel density of nearly 8.3 million pixels, making the images displayed on the screen always 4 times sharper and detailed than Full HD TVs. .
Possesses many outstanding features
QLED TV owns many smart features that give users comfortable entertainment moments such as voice search on the remote, sharing content from the phone to the TV, automatic identification, …
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Visibility offers 100% color gamut accuracy
The ability to display 100% color gamut gives you a wonderful family experience with true, sharp, vivid and brilliant images.
Outstanding brightness, color and durability
The quantum dots on the QLED screen increase the outstanding brightness up to 2,000 nits (brightness measurement unit) nearly twice that of conventional televisions. Thanks to that, users can easily feel the obvious difference between the color ranges from red to orange, from dark blue to light blue.
Image color is the same from every angle
New Quantum Dot technology improves the viewing angle of the TV, preserving color and brightness effects in every position. Helps users avoid distractions, immerse themselves in entertainment content thanks to the ability to eliminate ambient light such as: Lights, sunlight, … when equipped with Anti-Reflection anti-glare technology .
As such, QLED TVs take advantage of many of the unique features that quantum dots offer such as “high luminance”. Luminance refers to the brightness of the screen, and brightness is an important factor affecting other factors of image quality. The effect of brightness on overall color quality is simple.
For example, in the red spectrum there is a range of light and dark reds, but QLED TVs show this range better. This unique QLED technology, along with other black implementation technologies such as Direct Full Array, provides completely different picture quality and a more immersive viewing experience than non-QLED televisions.
The difference between QLED and OLED TVs
Screen construction
In QLED TVs, quantum dots are placed on the film and light from the backlight LED shines through that film, then passes through several other layers in the TV to bring the image displayed on the screen surface.
OLED TVs use panels with light-emitting organic diodes, which are capable of self-illuminating and turning on and off independently when current passes through without the need for a backlight like QLED TVs.
Blackness and Contrast
On OLED TV screens, each pixel is composed of organic compounds with a specific molecular structure. When there is an electric current, it can light itself, when there is no current, the RGB value is 0-0-0 , the pixels are not activated, causing the OLED screen to display full black. Therefore, OLED TVs have very good black levels and contrast.
QLED TVs always need current to activate the backlight, so the deep blacks of QLED TVs cannot be as absolute as OLED.
Brightness
Instead of relying on each pixel to create its own light like OLED TVs, QLED TVs use a separate backlight, and the LED backlight is made extremely bright. In addition, the quantum dots of QLED TVs are capable of maximizing light by producing brighter colors in the color spectrum without sacrificing saturation.
Display color space
Quantum dots help QLED TVs with better accuracy, brightness and color range. Samsung – a popular TV brand has claimed that a wider range of well-saturated colors at extremely high brightness levels is an advantage. In other words, in terms of color space, both OLED and QLED are of equal quality.
Backlight mechanism
One of the biggest differences between QLED and OLED is the backlight mechanism. QLED TVs use backlight and quantum dots that control different light levels, providing top-notch display, bright and vibrant color images. Meanwhile, OLED TVs use light-emitting diodes that emit light without a backlight or color filter to save more power.
Response time, input lag and refresh rate
Response time refers to the time it takes for a pixel to transition from one state to another. The faster the response time, the sharper the image, especially in fast action scenes. Response times on typical QLEDs range from 2 to 8 milliseconds , and OLED response times are around 0.1 milliseconds .
Input lag refers to the delay between performing an action and viewing the result of that action on the screen (often of interest to gamers). Both QLED and OLED TVs can achieve very low input lag, if you disable all additional video processing or simply use the TV’s Game Mode.
View
The best viewing angle of a QLED screen is from the front, the image quality including color and contrast will be reduced when you move to the side or up and down.
OLED screens have the advantage of viewing angles as they can be viewed at various angles (up to 84 degrees) without brightness degradation.
Ability to save electricity
QLED TVs use extremely thin OLED panels and do not need blacklight to save power than QLED TVs.
Size and price
Currently, the size of QLED TV screens is very diverse. As for OLED TVs, due to high production costs and not diverse models, the price of OLED TVs is somewhat higher than QLED TVs.
Longevity, common errors when using
QLED’s light source has been tracked and proven effective for a long time. LG says you’ll have to watch OLED TVs for 5 hours a day for 54 years before they drop to 50% brightness .
In addition, OLED TVs often have image retention errors, if you use them for a long time, it is likely that your screen will leave a ghost that creates a very uncomfortable feeling.
Should I buy a QLED TV?
Depending on your preferences, usage needs and financial conditions, you can choose to buy the right TV for you and your family. Each type of TV has its own advantages and disadvantages.
Although QLED TVs do not have absolute black depth and save power like OLED, they are quite cheap, with diverse models, eye-catching designs, and quality images. If OLED TVs excel in the dark, QLED TVs are a better all-round device.
Above are the outstanding features of the high-end QLED TV line. Hopefully through the article you have understood the features and advantages of the QLED series. If you have any questions, you can leave a comment for Tnhelearning.edu.vn to discuss with you!
In conclusion, a QLED TV stands for Quantum Dot LED TV, which is a type of display technology used in modern televisions. It utilizes quantum dot technology to enhance color reproduction and brightness, resulting in vibrant and lifelike visual experiences.
One of the key differences between QLED and OLED TVs lies in their respective display technologies. QLED TVs utilize a backlighting system with quantum dots that emit light when exposed to an energy source. On the other hand, OLED TVs use self-emissive pixels that individually emit light when an electric current passes through them.
QLED TVs have several outstanding features that make them popular among consumers. Firstly, they offer enhanced color accuracy and a wide color gamut, producing images with more realistic and vivid colors. This is possible due to the precise control over the Quantum Dot’s emission spectrum and the ability to achieve higher peak brightness levels. Additionally, QLED TVs are known for their efficiency and longevity, as they are less prone to burn-in issues compared to OLED TVs.
Moreover, QLED TVs often come equipped with advanced features such as high refresh rates, high dynamic range (HDR) compatibility, and local dimming, which further enhance the viewing experience. The high refresh rate reduces motion blur, making fast-paced action scenes appear smoother, while HDR technology expands the range of colors and contrast, resulting in improved detail and realism. Local dimming allows for deeper blacks and better contrast by selectively dimming or turning off specific areas of the screen.
In summary, QLED TVs offer superior color reproduction, brightness, and longevity compared to OLED TVs. Their outstanding features, including high refresh rates, HDR compatibility, and local dimming, contribute to an immersive and captivating viewing experience. As the technology continues to advance, QLED TVs are likely to become even more impressive in the future, providing consumers with an ever-evolving level of visual excellence.
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