As TV manufacturers look past traditional LCD displays, new types of screen technology are emerging on the scene and one contender is QD-OLED.
OLED and QLED have established themselves in the TV market over the past several years, and have also seen mini LED and micro LED make inroads in 2021, while LG has made a splash with its range of QNED TVs. But the TV world is looking forward to the next best thing ever and it is eyeing the capability of QD-OLED or QD displays.
So, what is QD-OLED and will this next-gen display make it to market?
What is QD-OLED?
It is worth revisiting to understand what QD-OLED is, what quantum dot and OLED are.
Quantum dot displays are essentially more advanced LCD TVs. They use nano-sized particles that absorb and emit light – different shapes produce different wavelengths (re-colors) when light passes through them. As quantum dots are known for their purity, they can display colors more accurately and their light efficiency allows for greater brightness, which is especially useful for HDR materials.
More quantum dots are very stable, and this means that the image’s stability persists over longer periods of time than OLED TVs, which decrease over time.
OLED stands for Organic Light Emitting Diode. Each pixel is self-emitting, which means that it can produce its own light. This produces a high level of contrast in the form of a pixel that can sit ‘on’ near a pixel that is ‘off’. It also helps deliver darker black levels OLED televisions are known for, something that is trickier for LCD-based televisions to achieve the backlight panels given to them. They are not as bright as TVs with quantum dots, and have the ability to retain images in a screen with static images.
So, what does this mean for QD-OLED hybrid displays? It will be an emissive display – much like OLED – emitting its own light with pixels, and this in turn will help produce darker black levels, higher contrast and wider viewing angles, while those quantum dot filters are more accurate. And will help create a wider range. Hit the color, as well as the potential high brightness. Screen retention could possibly be resolved with the QD display, although reports have indicated that it is still an issue.
How does QD-OLED work?
A TV display makes three different colors of light: red, green, and blue. How these colors are combined creates the image on the screen.
A TV with quantum dots (for example a Samsung QLED) works by beaming blue light into a quantum dot filter to create red and green light. When this blue light source is combined with red and green light, it creates a white light composed of saturated red, green, and blue that is used to put an image on the screen.
The OLED display produced by LG Display produces a white light using blue and yellow OLED materials, which is passed through a color filter to create red, green, and blue pixels that you screen. Create images that appear on.
According to Nanosys – a company that manufactures quantum dots – a QD-OLED or QD display (as Samsung refers to them), will use a stack of blue OLED materials to shine blue light into quantum dot filters. The filter will take some of the blue light and change it to red and green, and a combination of red, green, and blue light will form the image. You can see what will appear in the diagram above.
Since QD displays require fewer layers, Nanosys has claimed that it will be cheaper to build than OLED. Although stated a few years ago, and the cost of manufacturing OLEDs has risen as production has risen, South Korean news suggests that QD displays may be more expensive than initially thought.
What are the chances of seeing QD-OLED hybrid TV?
What can we acquire, a QD-OLED / QD display Might It happens, but at the moment there is no guarantee about it.
Looking at reports from South Korea, Samsung is still evaluating the feasibility of the QD display. It is worth explaining that Samsung Display and Samsung Electronics Company have two parts; The former makes screens for all types of products, including iPhones, while the latter makes TVs.
In 2019, Samsung Display invested $ 10.9bn in production facilities for the panel manufacturing at its production facility in Asan City. However, Samsung Electronics – home to the visual display TV arm – was considered lukewarm about the technology.
Given that Samsung has been busy with its QLED TVs for many years, it is also developing MicroLED technology and will see its Neo QLED branded TVs in 2021 including the Mini LED in the market.
LCD panel production is also considered for complex cases. Samsung Display had confirmed that it was ending LCD panel production due to falling profitability, an issue by Samsung Electronics that relied on LCD panels for its QLED TVs.
But the epidemic generated interest in LCD panels, so production has been extended until the end of 2021. In turn, it seems that Samsung Electronics is looking at the feasibility of QD-OLED.
A prototype display was given in January 2021, but it was reportedly denied that it was not bright enough. There have also been many problems with production yields, as Samsung Electronics is said to have higher rate panels than the production assembly line is currently capable of. There are also question marks on the cost.
A prototype hybrid TV is believed to be up for evaluation later this year, but with rumors that Samsung may purchase an OLED display from LG Display, it may indicate that QD displays are not ready yet.
Who is producing QD-OLED Hybrid TV?
TCL has confirmed that it is taking a stab at its QD-OLED TV or called it H-QLED. We can also see a prototype in IFA 2021. This will employ an inkjet printing method that can be more efficient and effective.
Other reports have suggested that Panasonic and Sony are interested in QD displays for gaming displays, but this will depend on whether QD-OLED can be made to work.
In any case, QD-OLED will appear on the horizon, but it seems a bit further than before.