Samsung is still working on the "real" self-emitting QLEDs

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If Samsung has somewhat misused the term Qled with the release of its LCD TVs using quantum dot filters, the South Korean manufacturer is still working on the "real" self-emitting QLED technology.

Before the introduction of Samsung's Qled TVs in January 2017, the technology of the same name referred to Quantum-LED technology. We had talked a lot about it in 2016 and Samsung seemed to be at the forefront in the development of Quantum-LED autoemissives (the "real" QLEDs). By QLED, we were talking about the technology that sought to compete with the Oled by replacing the light source of the quantum dot filters with an electrical source. Each sub-pixel Quantum Dot would then be able to emit its own light, in the manner of the Oled technology.

Unfortunately, Samsung has somewhat misused the term QLED with the release of its TVs. Indeed, Samsung Qled TVs do not exploit the technology that we presented in 2016. They simply use a VA-type LCD panel and an Edge-LED or Full-LED backlight system depending on the model. Fortunately, great progress has been made this year with the release of Q80R / Q85R / Q90R / Q950R models, which feature a new anti-glare filter to reduce blooming, but Samsung's Qled can not yet claim to be true QLED.

However, the South Korean manufacturer continues to work on the development of self-emitting QLEDs as shown in this scientific publication published in the famous journal Nature. A team led by Dr. Eunjoo Jang, a Samsung Scholar, and Dr. Yu-Ho Won, senior scientist at the Samsung Advanced Institute of Technology, has succeeded in replacing cadmium (a toxic substance now banned) with indium phosphide. The new structure avoids the oxidation of the core and allows to use a thicker and symmetrical envelope avoiding current leakage and thus improving energy efficiency. This composition would make self-emitting QLED screens up to a peak brightness of 100,000 cd / m² and a lifetime of one million hours (at 100 cd / m²).

Samsung continues to work on two main lines for the televisions of the future: the Micro-Led whose first prototype of 75-inch Ultra HD TV was presented at CES 2019, and the real "QLED". In the next decade, one of these two technologies will probably replace the Oled, which seems to be showing its limits today … unless LG Display has a surprise for CES 2020.

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