20‐3: <i>Invited Paper:</i> Development of Functional Polymer Materials Based on Inkjet Printing for Next‐Generation OLEDs

Studies on next‐generation OLEDs are actively being conducted to achieve high‐efficiency and high‐resolution displays. In particular, the development of high‐efficiency, long‐lifetime blue materials and devices, as well as the development of functional polymer materials applied to panels, is necessary. We developed a low‐viscosity quantum dot ink capable of high efficiency (PCE &gt;40%) and high color purity (FWHM &lt; 31 nm) by converting the color of blue backlight. Additionally, we developed a thermosetting material with a high refractive index (RI 1.60) for light extraction. Finally, we confirmed the commercial applicability by developing an inkjet polymer material with a low dielectric constant (Dk2.6) for device encapsulation.