This　paper　presents　the　design,　simulation　and　fabrication　of　edge-lit　Light-Guide　Plates　(LGPs)　using　laser　micro-machining　technique　for　Liquid　crystal　display　backlights.　The　optical　structure　of　the　LGP　is　established　in　an　optical　software,　and　simulated　by　tracing　rays　using　Monte　Carlo　method.　The　designed　microstructures　with　gradually　changing　desity　are　proved　to　offer　output　homogeneous　illuminance.　Based　on　the　simulation　results,　Laser　Micro-machining　Technique　(LMT)　fabrication　is　performed　for　verification.　The　measured　size　of　the　fabricated　microstructure　is　approximately　30.14　μm　under　100×　magnification,　which　is　close　to　the　prescribed　size　of　30　μm.　The　3D　surface　morphology　of　the　fabricated　microstructure　is　also　available.　Ten　groups　of　edge-lit　LED　display　backlight　prototypes　equipped　with　the　LGPs　fabricated　by　LMT　and　Screen　Printing　Technique　(SPT)　are　developed　and　analyzed.　Comparison　results　show　that　LGPs　fabricated　by　LMT　can　provide　better　optical　uniformity　(6.2%　higher)　and　lower　color　difference　(0.0027　lower)　than　conventional　method　(SPT).　Besides　the　advantages　of　faster　and　simpler,　LMT　is　entirely　environmentally-friendly　during　the　machining　process.　With　the　characteristics　of　good　performance,　automatic　production　and　thinning　tendency,　it　is　reasonably　believed　that　LMT　will　have　bright　prospect　in　the　near　future,　and　may　be　a　promising　alternative　method　for　SPT　in　display　applications.　©　2015,　Chinese　Optical　Society.　All　right　reserved.