Light　Guide　Plate　(LGP)　plays　an　irreplaceable　role　in　Liquid　Crystal　Display　(LCD)　backlight.　LGP　with　quantum-dot　(QD)　shows　promise　in　the　development　of　next-generation　displays　because　of　QDs＇　beneficial　characteristics.　In　this　paper,　we　present　a　novel　QD　LGP　for　LCD　backlight　based　on　QD　scattering　microstructure　array　(SMA),　in　which　the　QD　net　dots　are　located　discretely　and　arranged　in　arrays　on　the　bottom　surface　of　LGP.　The　paper　first　introduces　the　QD　backlight　briefly,　then　discusses　the　preparation　and　fabrication　process　of　the　proposed　prototype,　and　finally　presents　a　systematic　photometric　approach　to　reveal　the　remarkable　advantages　of　QD　backlight.　The　white-balance　is　achieved　by　adjusting　the　proportion　of　the　QDs　in　the　mixture　and　optimizing　the　R-QD　/　G-QD　ratio.　The　apparent　morphology　of　QD　SMA　is　characterized　by　OLYMPUS　laser　microscope,　while　the　optical　properties　of　QD　backlight　are　investigated　by　F-4600　fluorescence　spectrophotometer　and　SRC-200M　spectrum　color　luminance　meter,　respectively.　Experimental　results　show　that　the　white　balance　can　be　achieved　when　the　QDs　account　for　a　certain　proportion　about　7%　within　the　mixture,　and　the　ratio　of　R-QD　/　G-QD　is　optimized　to　about　1:　12.　The　proposed　system　offers　an　alternative　and　feasible　method　for　fabricating　QD　backlight,　which　may　have　great　application　prospects　in　the　future.