Home »Technology Observation» Manufactured Quantum Dots Aimed at Next-Generation Displays

KAIST scientists have developed encapsulated quantum dots, which reduces the number of quantum dots required to revolutionize the display industry.

«Previously: QD film covered with siloxane can block heat and moisture  

The joint KAIST research team of Professor Byeong-Soo Bae from the Department of Materials Science and Engineering and Professor Doh Chang Lee from the Department of Chemistry and Biomolecular Engineering has developed a technology that can accommodate embedded quantum dots and block heat and moisture. The sol-gel condensation reaction process of the silane precursor is applied to quantum dots, and then applied to siloxane polymers to overcome the limitations of quantum dots.

QD displays currently on the market have a thin film inserted to separate them from the heat-generating LEDs. However, the high unit cost of this protective layer increases the overall cost of the display and reduces their price competitiveness in the market.

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If this technology is used, the overall price of the display will be reduced by producing stable QD films without additional protective barriers. In the future, QD films can be directly applied to blue LED light sources. Therefore, it will be possible to develop a QD display that can reduce the number of required QDs and improve its performance.

Professor Bae said: "We have proposed a method that allows quantum dots to overcome their limitations and have a wide range of applications because they are being developed for the next generation of displays. Our technology will make a significant contribution to the country’s display industry. ."

  Figure 2 and Figure 3: The above figure shows the So-gel condensation reaction between methacryloxypropyltrimethoxysilane (MPTS) and diphenylsilane diol (DPSD) in the silane precursor. The illustration shows a photo of QD-oligosiloxane resin under indoor light (left) and ultraviolet light (λ = 365nm) (right). The figure below shows the radical addition reaction between the carbon double bond of the methacrylic functional group and oleic acid. The illustration shows a photo of QD-silox film under indoor light (left) and ultraviolet light (λ = 365nm) (right).  

  «Previously: QD film covered with siloxane can block heat and moisture

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