High-resolution　(HR)　displays　are　in　much　demand　as　metaverse　makes　near-eye　displays　the　most　important　equipment　in　recent　years.　Based　on　wave　optics,　a　microscale　optical　crosstalk　model　for　HR　display　devices　is　proposed.　It　is　indicated　that　the　pixel　pattern　will　be　distorted　over　long-distance　transmission　in　light-emitting　devices　with　inner　periodic　microstructure,　and　the　optical　distortion　is　related　to　the　size　of　pixels　and　the　distance　from　the　emitting　layer　to　the　outlet.　A　bottom　emissive　HR　red　quantum　dot　light-emitting　diode　(QLED) array　is　introduced　to　confirm　the　model　and　a　top　emission　scheme　is　provided　to　effectively　reduce　the　transmission　distance　and　suppress　the　pixel　distortion.　Optical-crosstalk-free　pixels　are　finally　achieved　by　adopting　the　optimized　top-emission　cathode　thickness　of　30 nm.　This　study　provides　a　direction　for　realizing　high-quality　and　high-resolution　micro-displays.　©　2024　Wiley-VCH　GmbH.