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Quantum Dot Technology

QLED vs OLED – The future of TV

What is the difference between OLED and QLED televisions?

QLED stands for Quantum-dot (QD) Light Emitting Diode (LED). Quantum dots are nanoparticles that emit light in different colors when light hits them. In QLED TVs, an LED backlight strikes the dots, which are enclosed in a special film. Since the light from the LED source transmits through several layers to the screen’s surface, it is referred to as “transmissive.”

OLED stands for Organic Light Emitting Diode. OLED TVs employ organic dye film between two conductors. This film emits its own light when an electric current passes through it. Since the pixels produce the light themselves, OLEDs are said to utilize an “emissive” display technology. 

What is QLED TV?

QLED TVs are LCD televisions, but they use quantum dot display technology as a different, more efficient means of producing color. As mentioned, quantum dots are tiny particles that range anywhere between two and 10 nanometers in diameter, with the different sizes producing different colors. By using quantum dot technology, QLED TVs produce saturated, distinct primary colors in a staggering range, with superior brightness, intensity, and reliability.

A QLED TV is just an LCD TV with quantum dots.

Before we get into a discussion about the pros and cons of OLED vs QLED, let’s do a quick summary of the two technologies:

  • OLED stands for “organic light-emitting diode.”
  • QLED (according to Samsung) stands for “quantum dot LED TV.”
  • OLED is a fundamentally different technology from LCD, the major type of TV today.
  • QLED is a variation of LED LCD, adding a quantum dot film to the LCD “sandwich.”
  • OLED is “emissive,” meaning the pixels emit their own light.
  • QLED, like LCD, is, in its current form, “transmissive” and relies on an LED backlight.

QLED or OLED? That is the question.

Both QLED and OLED panels transmit high-quality pictures. However, quantum dot technology is a rising star that not only delivers some distinct advantages now, but is on the cusp of presenting great advances in the near future. Following are some of QLED TVs’ present-day benefits:

  • Brightness – Brightness is a key element of the high dynamic range (HDR) experience. The more a display can deliver the light levels our eyes perceive in the outside world, the more lifelike the images seem, and therefore the more satisfying a viewer’s experience is. Display brightness also highlights image details better in brightly lit environments. Currently, QLED TVs are capable of hitting up to 2000 nits brightness—an extraordinarily high number for a consumer television.
  • Range – The color range that QLED TVs achieve is a direct result of their ability to achieve optimal brightness, as differing levels of light affect the range of color tones a TV can display. QLED TVs’ external backlights do limit their ability to achieve the same depth of black achieved by their OLED counterparts; however, they more than make up for it with the vibrancy and range of the rest of the colors.
  • No Screen Burn – One of the problems with OLED TV is that they are susceptible to ‘screen burn’ or ‘burn-in.’ According to C/Net, “Burn-in happens when a persistent part of the image onscreen—navigation buttons on a phone, or a channel logo, news ticker, or a scoreboard on a TV, for example—remains as a ghostly background no matter what else appears onscreen.” Whereas OLED screens are prone to screen burn, QLEDs are immune to it, even if you leave a fixed image element such as a channel logo onscreen for a very long time. That burn-in resistance is one elemental difference between OLED and QLED.
  • Size and Affordability – Currently, OLED screens come in limited screen sizes of 48, 55, 65, 77 and 88 inches, whereas QLED screens range from 43 to 98 inches. In a world where screen size in the number one consumer preference, QLEDs have a distinct advantage. Even though QLED screens come in bigger sizes, however, they remain the more affordable choice, and they consume less power to deliver their picture.

Future Plans

In terms of the future, quantum dot manufacturers are poised to take the lead through continuous improvement on their already cutting-edge technology. For instance, right now, QLED TVs take a photoluminescent approach to their displays, meaning that they use external light to stimulate the quantum dots. However, they are working on an electroluminescent approach, which would mimic OLED technology in that electricity applied to each QD would enable each pixel to create its own light. The major benefit of this development will be that it will combine QLED brightness and range with OLED depth of blackness, rendering the color display absolutely unparalleled.

Moreover, quantum dots technology can enhance current OLED displays as well. Quantum Dots can be utilized as color converting layers for blue OLED pixels to obtain green and red pixels. The hybrid displays will combine advantages of OLED screens with wide color gamut of quantum dot displays.

In the rapid-fire world of evolving technology, the bleeding edge of advancement is the only place to be in order to keep up. When it comes to television display technologies, quantum dots are that bleeding edge. QLED TVs not only already demonstrate significant advantages over OLED panels, they are primed to take display technology into the future.

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