At ‘an analytical seminar on market entry potential of OLED and Solution Process OLED’ having been held in Seoul Small& Medium Business Center on last October 14th, Professor Lee Chang-hee of Seoul National University and Senior Researcher Bang Ji-won of Korea Institute of Ceramic Engineering and Technology shared opinions about current situations of QLED, development trends, and issues.
Professor Lee Chang-hee said that QLED had excellent color purity because half-width of QLED was narrower than OLED by approximately 20~30nm, and disclosed a fact that QLED was favorable in color reproduction due to high levels of accuracy when manufacturing it, and efficiency of luminescence material reached to regular levels to the degree of catching up OLED. However, he stated technical difficulties of Cd-free QLED which did not use cadmium, a heavy metal, together with securing life stability of QD (Quantum Dot) luminescence materials, and emphasized that investment on QLED is the shortcut of commercialization by saying “The time of commercialization could be moved forward to 5 years or 3 years according to capital and manpower investing scales from the industry.”
Senior Researcher Bang Ji-won pronounced luminescence efficiency of light-emitting materials, stability, non-toxic QD, and approaches by various directions such as QD-LCD which applied QD CCL (Color Change Layer) to blue-LED BLU (Black Light Unit) by using QD, OLED which applied OD-CCL and C/F (Color Filter) to WOLED, OLED that applied QD CCL without C/F to blue-OLED were being progressed.
QLED-related academia discussed about the potential of OLED positively in this way, but CEO Lee Chung-hoon of UBi RESEARCH said “Development of WOLED will be strived too because QLED has already been developed, and if brightness is more enhanced after being evolved to top emission method from current bottom emission one, QLED entry to premium market will become difficult further, and then pronounced “When new technology can enter the market, considerations whether new technology will be good from certain aspects including performance, efficiency, cost etc. shall be made in case of comparing them with the technologies having been commercialized ”