Perovskite　quantum　dots　(PeQDs)　are　seen　as　the　credible　alternative　to　traditional　QDs　ascolor　converter　in　liquid　crystal　display　(LCD).　Unfortunately,　PeQDs　sufferfrom　instability　and　color　separation,　and　the　prepared　PeQDs　enhanced　films(PQDFs)　need　the　protection　of　expensive　barrier　layers,　which　significantly　increases　price　and　limits　their　application.　Herein,　large-area　yellow　monolithic　PQDF　is　fabricated　with　both　green　CsPbBr3　and　red　CsPbBr1I2QDs　encapsulated　in　the　dual　matrices　of　inorganic　glass　and　polypropylene　(PP)　via　an　industrialized　melt　extruding　&　rolling　method.　The　PQDF　shows　high　photoluminescence　quantum　yield　(PLQY)　of　92%　and　narrow　full　width　at　half　maximum　(FWHM)　of　19　nm　(green)　and　33　nm　(red).　Importantly,　the　bare　PQDF　without　barrier　layers　can　pass　harsh　aging　test　at　85　°C/85%　RH　and　reach　anoperating　T90　lifetime　over　1000　h.　Finally,　a　white　backlit　unit　is　designed　by　coupling　yellow　monolithic　PQDF　with　blue　light　guide　panel,　and　the　constructed　prototype　display　shows　superior　color　rendering　performance　forits　narrow　green/red　emissions,　reaching　a　color　gamut　of　110%　National　Television　System　Committee　(NTSC).　This　work　provides　a　novel　and　easy-to-industrialize　route　to　prepare　PQDFs　to　realize　their　commercial　application　in　backlit　display.　©　2024　Wiley-VCH　GmbH.