Inkjet printing of OLED displays has been in development for many years, driven by the potential of this deposition technology to reduce the cost of OLED display manufacturing.
Currently, the vast majority of AMOLED, WOLED, and QD-OLED production relies on evaporation methods to deposit OLED layers. In these processes, OLED molecules are evaporated and then deposited onto the required substrates. For AMOLED displays, precise subpixel patterning is necessary, which requires the use of a fine metal mask (FMM). While subpixel patterning is less complex for WOLED and QD-OLED production, these technologies still depend on material evaporation.
Evaporation-based OLED deposition has enabled the large-scale production of high-quality, affordable OLED displays found in wearables, smartphones, tablets, laptops, monitors, and TVs. This approach forms the foundation of today’s OLED industry, which exceeds $40 billion in value.