Quantum dots

Additive manufacturing technology that will allow to deposit quantum dots material with unparalleled precision, versatility and simplicity.

Quantum dots are light-emitting nanocrystals that absorb light of one wavelength and convert it to another. The increasing demand for quantum dots results from their growing implementation in numerous applications due to their miniature property, high influence on quality of new generation devices as well as on their energy efficiency features and enabling application of their less- or non-toxic types.

Typically, those tiny crystals are implemented in high-quality display devices, but further applications – such as flat-panel screens, digital cameras, smartphones, gaming consoles and personal digital assistant devices – are more and more common. Higher efficiency and enhanced color quality are the advantages sought after both by manufacturers and users of quantum dots based displays. When the typical blue LED light is shone through a layer of quantum dots, the crystals break down the light and produce a richer white light that contains all the colors of the spectrum. This light then results in a better picture quality with darker blacks and more vibrant non-blue colors. It is worth underlining that quantum dot displays use around 20-30% less power in comparison to LCDs of the same screen size. Furthermore, QLEDs emit up to 90% less blue color light than LCDs and therefore are much human-eye friendly. If the TV is edge-lit, quantum dot technology will be incorporated into tubes on the edge of the display where the light shines through. But in most cases quantum dots will be implemented on another layer of film just above the backlight.

PROBLEM

 

  • colour-filter layers based on quantum dots are currently produced using material- & time-consuming subtractive methods
  • available technologies for quantum dots deposition are expensive, complex, limited & slow
  • constant pursuit of miniaturization of pixels and increased luminous efficiency of display devices further magnifies these limitations

SOLUTION

XTPL additive manufacturing technology will allow to deposit quantum dots material with unparalleled precision, versatility and simplicity, reducing overall manufacturing cost. Deposited microdots currently obtained on the market usually have about 50 um, the minimum is 20 um – while XTPL currently achieves microdots with diameter of 1 um, and plans to go even below this limit. This level of precision cannot be obtained by any other printing method in the world.

VALUE PROPOSITION

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