As we all know, Samsung is the first to launch the qled technology, which is one of the first echelon screen technologies in the industry. Now Samsung claims to have developed the industry-leading blueqled technology.
Samsung claims that since blue is the most difficult color to realize among the three primary colors of qled (red, blue and green), the completion of this technology marks another demonstration of Samsung’s achievements in the field of quantum dot technology after the development of red qled technology by Samsung in November last year.
Samsung’s qled TV may not be able to provide natural and pure black color like LG’s OLED TV, but it can provide higher brightness (high HDR) and no screen burning problem.
It home knows that quantum dots (QDs) are semiconductor particles with a diameter of several nanometers. When they are illuminated, they will re emit light of a certain color according to their size. Among the three primary colors, the blue QD with the largest band gap will oxidize rapidly after exposure to external light source, resulting in short service life and low luminous efficiency.
“Samsung’s unique quantum dot technology once again breaks through the limitations of existing technology in the industry,” said Samsung researcher eunjoo Jang. “I hope this research can continue to help accelerate the commercialization of quantum dot light emitting diodes (qled)
Samsung said that in order to better stabilize the QD material and ensure long-lasting light response, the researchers applied a structure with a double emitting layer of quantum dots and a shorter ligand on the blue QD surface, and also improved the current injection rate.
Thanks to this, Samsung R & D center sait (Samsung Institute of Technology) has developed the highest performance cd free blue qled technology. It provides a luminous efficiency of 20.2%, a maximum brightness of 88900 nits and a service life of 16000 hours (measured at half brightness at 100 NITS). The results were published last week in the journal Nature in a study called “efficient and stable blue quantum dot light emitting diodes.”.
“This study is significant because we have not only established the performance of quantum dot LEDs, but also demonstrated that the technology can provide first-class performance at the element level,” said Dr. taehyung Kim, lead researcher and first author of the paper
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