With　the　ever-growing　demand　for　a　greater　number　of　pixels,　next-generation　displays　have　challenging　requirements　for　resolution　as　well　as　colour　gamut.　Here,　to　meet　this　need,　quantum-dot　light-emitting　diodes　(QLEDs)　with　an　ultrahigh　pixel　resolution　of　9,072–25,400　pixels　per　inch　are　realized　via　transfer　printing　combined　with　the　Langmuir–Blodgett　film　technology.　To　reduce　the　leakage　current　of　the　devices,　a　honeycomb-patterned　layer　of　wide-bandgap　quantum　dots　is　embedded　between　the　light-emitting　quantum-dot　pixels　as　a　non-emitting　charge　barrier　layer.　Red　and　green　QLEDs　are　demonstrated.　Notably,　the　red　devices　achieve　a　brightness　of　up　to　262,400　cd　m−2　at　an　applied　voltage　of　8　V　and　a　peak　external　quantum　efficiency　of　14.72%.　This　work　provides　a　promising　way　for　achieving　ultrahigh-resolution　QLED　devices　with　high　performance.　©　2022,　The　Author(s),　under　exclusive　licence　to　Springer　Nature　Limited.