Abstract

This study develops a novel high‐thickness BM QD color conversion layer structure and a surface‐planarization process for QD materials after inkjet printing. This process reduces the height differences caused by the multi‐step exposure‐developing process. Following the fabrication of 8μm BM structure and 2μm CF structure, precise inkjet printing of QD materials is conducted within the 100ppi pixel area. we adjusted the surface energy of the color conversion layer by using an organic solution treatment to control the thickness profile and improve the color conversion efficiency. The printed QD materials are covered by a high‐transparency, low‐density polymer. After the color conversion layer component is encapsulated, reliability verification with a reliability assessment of 240 hours at RA (60℃ degrees, 90%RH) demonstrates an encapsulation effect where QD brightness retention rate remains above 90%.

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