What Is a QD-OLED Display?

What Is a QD-OLED Display?

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Guide: What Is a QD-OLED Display?

OLED displays are made from organic emitter materials – and they are becoming famous for how these next-generation displays offer excellent image quality and novel form factors. Quantum icons are small particles with excellent photonic emission properties – and are widely used in many LCD displays today as QD functions allow blue LED light to switch to red and green light to create full color displays better than whites. backlit LCDs. QD particles can also be used to create emission signals, where the QD itself illuminates – read more about QD signals here.

How does OLED work?

OLED (Organic Light-Emitting Diode) is a type of display that uses organic carbon-based film through which two conductors are currently engaged, causing it to illuminate. To create an image, OLED television combines blue and yellow light from OLED sources to create near-white light. This is then passed through a custom-made color filter up of red, blue and green sub-pixel.

In contrast to traditional LCD televisions, which rely on a separate backlight passing through a layer of pixels, each individual lens in the OLED can provide both light and image vision. As long as each gift is its own light source and can be completely darkened if necessary, a shiny gift can appear next to one black without affecting the other, creating a general striking contrast for which OLEDs are normally recognized.

And this is not the only benefit. Since the image does not have to pass through an LCD matrix, the viewing angles are wide, while the overall construction of the OLED TV is thin and light due to the simple setting.

The disadvantage of OLED TVs is that they have the difficulty of having the same peak brightness as even the average retirement model, as each gift is limited by its size in the amount of light it can emit and the amount of energy it receives through color commands. is. To fix this, LG started using a WRGB pixel system – adding white pixels to try to increase the brightness. Unfortunately, this is a disadvantage and can break the color of other pixels. Since the optical material in the OLEDs is not completely stable, its life is reduced in proportion to the light it should emit. White pixels can shorten your TV life.

A little more controversial issue with OLEDs is that the organic form of the panel is a potential that can cause image leakage and even burn-in. However, this is not a widespread, widespread problem as some (including Samsung), and we did not find with any of the OLEDs tested or used by our testers. home. But understanding is also a problem for some buyers, and companies take it seriously enough to build into it features to reduce the risk of occurrence.

As previously mentioned, LG is the only manufacturer of OLED TV panels. It naturally uses these for its own programs, but also sells panels to other manufacturers such as Sony, Panasonic and Philips. After a brief exit to the world of OLEDs in 2013, Samsung has focused since the development of competitive technologies such as QLED. He knew that the company had deliberately led to user doubts about the reliability of OLEDs, even going so far as to develop a TV monitoring application and encourage customers to just trade in their OLED for a QLED.

How does QLED work?

QLED stands for Quantum dot Light Emitting Diode and is designed to improve image quality features of OLED (super deep black, amazing contrast, wide viewing angles) along with far superior brightness and colors. A QLED uses LED backlight, a layer of quantum icons, an LCD matrix, and a color filter to create an image.

The quantum dots in QLEDs are small semiconductor particles only a few nanometers in size. These fields convert white light into color light without any energy loss. The color effect depends on the size of the quantum dot itself – the larger ones are at the red end of the spectrum, the smaller ones at the blue end.

In the future, engineers hope to make these semiconductors, such as OLED and MicroLED technology, self-contained, but currently rely on external power.

The advantage of quantum icons is that they offer superior colors especially in comparison to traditional LCDs and perhaps even compared to OLED. At the same time, the backlighting and power consumption of the icons create levels of light that the OLED cannot match. However, it can also not match the deep blacks of the OLED as light can pass from white areas to nearby black pixels.

Samsung has tried to increase the variability of its models by reducing its backlight and switching from standard LEDs to low-back LED headlights for its premium “Neo QLED” televisions. As the name suggests, these backlights use very small LEDs assembled at higher dimensions to allow for more independent dimming areas. These LEDs are very small they look like grains of sand, but for the length at normal dimming, the back-pixel size seems impossible.

How does QD-OLED technology work?

The OLED QDs use a combination of blue OLED materials to illuminate pixels with red and green quantum dots. Each OLED pixel is divided into three pixels: a blue pixel made from original blue OLED material, a red pixel with red-colored quantum dots, and a green pixel fraction created by green body-friendly quantum dot. . These can then be combined to create a true white light.

In contrast to the use of filters, the color changes of the quantum dots lose no light energy. With this method of OLED lighting, new QD OLEDs should appear brighter than current OLED televisions and also be able to be completely dimmed. So why don’t OLEDs just use red, blue and green emission material and cut off light attenuating commands? This is primarily due to the practicality of making true RGB panels in the dimensions required for modern televisions. In fact, Samsung’s only OLED, S9C, tried to do this but it felt unprofitable in business before it retired quickly.

If successful, QED OLEDs can offer both OLED contrast and QLED brightness and vibration. Samsung said its QD OLED 4K resolutions will include approximately 8.3 million (3840 x 2160) separate light sources that enable a high resolution of 1,000,000: 1 and offer superior image information and better HDR performance. In terms of color, the company says QD-OLED will offer one of the widest color expressions among its current displays. Based on BT.2020 specifications, QD-OLED will deliver more than 80% color range, publicly delivering 0.0005 nits black and 1000 nits peak white.

How much does QD-OLEDs cost?

Insiders have suggested that QD OLED TVs will sit between Samsung’s six-digit Super-Premium MicroLED TV and its flagship QLED TVs, meaning they may be more expensive than LG’s OLED TVs. According to reports, QD OLEDs will hit the market first in 55-inch and 65-inch sizes, with larger 70-inch models coming the next day without knowing whether they are set to 4K or 8K.

Samsung shows that it is believed to have invested $ 11.7 billion in QD technologies since 2019. With the company’s plan to halt LCD production by 2022, there will certainly be a significant return on investment for new business soak. Since QD OLEDs are simpler in design and use fewer materials, production costs can technically fall under those of OLED, which in the long run may make them cheaper to buy.

At Sony, the prices are still TBC, but the A95K will replace the A90J, which comes in 55-inch sizes for £ 2699 and £ 3499 for a 65-inch screen.


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What Is a QD-OLED Display?
What Is a QD-OLED Display?
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