Samsung already has QLED screens out, but those evidently employ the lesser of two existing technologies: photoluminescent and electroluminescent. BOE’s new QLED screens utilize the latter, which is emissive, meaning that the sub-pixels light themselves and no backlight is required, making them similar to OLED. Electroluminescent QLEDs have some exclusive advantages such as better color gamut and cheaper production, however. Unfortunately, it will be at least five years until these “true” QLEDs take off.



Electroluminescent QLED is an emissive technology, like OLED and plasma before it. That means each sub-pixel generates its own light instead of relying on a backlight and is able to shut off completely. This results in ultra-deep black levels as well as an ability to display extremely sharp contrast transitions such as individual stars in a starfield without blooming and halo artifacts. The demonstration of a functional electroluminescent QLED is tremendous news for AV enthusiasts who are eagerly awaiting the next generation of flat panel TV technology. This flavor of QLED promises the same “infinite” contrast as OLED while offering (theoretical) advantages in terms of longevity, color gamut, and peak luminance.

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Source: [H]ardOCP – World’s First Working Emissive QLED Screen Unveiled