According to UBI Research from Korea, Samsung Display has managed to improve its quantum dots nanorod LED (QNED) technology, and the company aims to start buying production equipment next year.

Apparently SDC's plan is to replace the fluorescent blue emitters in its QD-OLED TV production process, which will of course turn these TV panels into QD-QNED ones.

Whether SDC will actually manage to commercialize QNED displays is still an open question. UBI estimates that SDC made drastic improvement in the technology in the last few years, but even when ready, will it make commercial sense?

UBI says that a QNED pixel will require a 7T2C (7-transistors, 2 capacitors) TFT structure, as the LED will require more complicated driver to align and adjust it and it requires an oscillator transistor not used in any other display structure in addition to a transistor that is used to repair cases where the nanorods (placed using an inkjet printing process) are not aligned correctly. This is a more complicated design compared to the 3T1C structure used in LG's OLED TVs.

All this means that this technology seems to add further complicates to Samsung's already complex QD-OLED structure.



Quantum dots technical possibilities ?

I am no expert and I have a naive question : would it be possible to engineer quantum dots that can switch reflective color in a bistable way through maybe electric field, and have at the same time still have the possibility to emit light through electric current (electroluminescence) ? 

Basically the goal would be to create a display that have the combined functionalities of an e-ink color bistable display (that could be controled maybe through an electric field), and a color emitting display (like OLED / micro-LED) that could be activated through electric current.

From there, it would be possible to create a display that display a static color image when turned off (kind of billboard), and be a dynamic light emitting display when turned on...

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