Micro-lens　array　(MLA)　with　high　aspect　ratio,　precise　alignment　and　great　uniformity　of　focusing　are　crucial　to　the　integral　imaging　3D　display　systems.　In　this　work,　we　employed　the　square　micro-lens　array　(SMLA)　with　ideal　aspect　ratio　of　100%,　to　realize　high　performance　integral　imaging　3D　display　systems.　The　parameters　of　SMLA　and　the　according　reconstruction　performances　were　first　simulated　using　TracePro　software,　it　was　shown　that　the　SMLA　can　effectively　reduce　the　effects　of　stray　light　on　the　reconstruction　image,　while　keeping　the　brightness　due　to　the　high　aspect　ratio　compared　to　that　using　circular　MLA　and　pinhole　array,　thus　to　achieve　high　quality　reconstruction　image.　Polymer　SMLA　with　great　converging　performance　and　aspect　ratio　of　around　88%,　were　then　successfully　fabricated　using　screen　printing　technique.　An　integral　imaging　3D　display　system　with　high　brightness,　little　color　moire　patterns　and　clear　image　was　demonstrated　using　the　fabricated　SMLA,　exhibiting　good　reconstruction　performance.　(C)　2017　Elsevier　GmbH.　All　rights　reserved.