Inkjet　printing　technology　is　one　of　the　most　attractive　methods　for　the　realization　of　full-color　patterning　for　displays.　In　this　work,　we　successfully　introduce　this　technology　into　fabricating　pixelated　light-emitting　electrochemical　cells　(LECs).　By　carefully　controlling　the　poly　(3,4-ethylenedioxythiophene)-poly　(styrenesulfonate),　and　cationic　Ir(III)　complexes　ink　formulation,　as　well　as　their　inkjet　printing　properties,　patterned　LEC　pixels　in　ultrahigh　definition　TV　format　was　fabricated,　leading　to　a　resolution　of　73　pixels　per　inch.　The　as-resulted　inkjet-printed　LEC　exhibits　a　maximum　luminance　and　a　current　efficiency　of　3402　cd/m2,　and　7.5　cd/A,　respectively,　which　is　close　to　that　of　the　spin-coated　one.　This　work　paves　a　new　way　for　the　fabrication　of　low-cost　material-efficient,　pixelated　light-emitting　electrochemical　cells.　©　2019　Elsevier　B.V.