Inkjet　printing　has　been　used　as　an　additive　manufacturing　method　to　fabricate　organic　light　emitting　diode　(OLED).　By　changing　the　type　and　proportion　of　the　solvent　of　the　inks　and　adjusting　the　printing　parameters　of　the　ink　droplets,　uniform　ejection　of　multi-nozzle　is　achieved　and　the　volume　deviation　of　the　jet　is　controlled　at　about　5%　when　poly(3,4-ethy　lenedioxythiohene):　poly　(styrenesulfonate)　(PEDOT:PSS),　as　the　hole　injection　layer　materials,　was　dissolved　in　isopropanol　and　ethylene　glycol　(volume　ratio　2:　1).　Moreover,　the　OLED　devices　of　monochrome　pixel　was　fabricated　based　on　the　multi-nozzle,　and　the　turn-on　voltage　is　reduced　to　3.1v　along　with　the　improvement　of　the　brightness　and　efficiency　of　the　device.　©　2021,　John　Wiley　and　Sons　Inc.　All　rights　reserved.