Laser‐driven　projector　puts　forward　urgent　demand　for　light‐conversion　materials　to　achieve　high‐quality　image　display.　Herein,　a　composite　structure　phosphor‐in‐glass　film　(PiGF)　is　fabricated　via　screen‐printing　YAG:Ce　and　low‐melting　glass　on　the　alumina　substrate.　Benefited　from　well‐retained　optical　properties　of　YAG:Ce　in　amorphous　glass　and　high　thermal　conductivity　of　substrate,　PiGF　can　produce　desirable　luminous　flux　of　7169　lm　and　luminous　efficiency　of　192　lm　W−1　at　saturation　threshold　of　13.25　W　mm−2.　Furthermore,　it　is　demonstrated　that　thermal　management　by　using　a　cool　fan　with　aluminum　heat　sink　is　essential　to　reduce　heat　aggregation　and　improve　white‐light　stability　of　PiGF‐based　laser　lighting　source　operated　in　a　reflective　mode.　Accordingly,　a　PiGF‐converted　laser　projection　system　is　successfully　designed　for　the　first　time,　showing　more　vivid　and　brighter　display　feature　benefited　from　high　laser‐driven　luminance　of　LCD　screen　(2180　cd　m−2).　This　work　highlights　the　practical　application　of　PiGF@alumina‐substrate　composite　as　an　efficient　laser‐driven　color　converter　in　high‐brightness　projection　display.