A micro-molded sheet for a backlight module, characterized in comprising: a base material layer formed from a transparent material; a coating, formed on an upper surface of the base material layer and having a thickness of 0.1 to 3 μm after the coating is hardened through a drying module and a UV-hardening module, the coating containing an adhesive and nano-particles wherein the adhesive comprises a polyacrylate resin or a urethaneacrylate resin and further comprises a photopolymerization initiator, the nano-particles are ball-shaped and have a particle diameter of 10 to 100 nm, and the coating contains 5 to 50 parts by weight of the nano-particles relative to 100 parts by weight of the adhesive; and a micro-molded array layer comprising: a first layer, formed on an upside of the coating by applying a liquid resin on the hardened coating and having a planarization light incident surface being in alignment with the adhesive; and a plurality of microlens on top of the first layer forming micro-molded patterns, wherein the plurality of microlens is formed by using a patterned member to press the liquid resin onto the hardened coating, and the liquid resin is hardened through a hardening member, wherein at least one of the plurality of microlens is a spherical lens with a sphere coefficient or an elliptical lens with an ellipse coefficient, and the plurality of nano-particles produces scattering, to effectively conceal or offset dark spots observable when there are defects in the micro-molded array layer and the micro-molded sheet, the micro-molded array layer has a height of 16 to 24 μm and a width of 35 to 48 μm; a part of upper surfaces of the first layer and upper surfaces of the plurality of microlens form a light exiting surface formed with micro-molded patterns thereon; and the micro-molded patterns occupy 70-90% of the surface of the micro-molded array layer, whereby the micro-molded sheet is provided with excellent diffusing effect, enabling effective concealment or offset of defects of a light guide plate and optical sheets at the same time of avoiding loss of luminance. a base material layer formed from a transparent material; a coating, formed on an upper surface of the base material layer and having a thickness of 0.1 to 3 μm after the coating is hardened through a drying module and a UV-hardening module, the coating containing an adhesive and nano-particles wherein the adhesive comprises a polyacrylate resin or a urethaneacrylate resin and further comprises a photopolymerization initiator, the nano-particles are ball-shaped and have a particle diameter of 10 to 100 nm, and the coating contains 5 to 50 parts by weight of the nano-particles relative to 100 parts by weight of the adhesive; and a micro-molded array layer comprising: a first layer, formed on an upside of the coating by applying a liquid resin on the hardened coating and having a planarization light incident surface being in alignment with the adhesive; and a plurality of microlens on top of the first layer forming micro-molded patterns, wherein the plurality of microlens is formed by using a patterned member to press the liquid resin onto the hardened coating, and the liquid resin is hardened through a hardening member, wherein at least one of the plurality of microlens is a spherical lens with a sphere coefficient or an elliptical lens with an ellipse coefficient, and the plurality of nano-particles produces scattering, to effectively conceal or offset dark spots observable when there are defects in the micro-molded array layer and the micro-molded sheet, the micro-molded array layer has a height of 16 to 24 μm and a width of 35 to 48 μm; a part of upper surfaces of the first layer and upper surfaces of the plurality of microlens form a light exiting surface formed with micro-molded patterns thereon; and the micro-molded patterns occupy 70-90% of the surface of the micro-molded array layer, whereby the micro-molded sheet is provided with excellent diffusing effect, enabling effective concealment or offset of defects of a light guide plate and optical sheets at the same time of avoiding loss of luminance. a first layer, formed on an upside of the coating by applying a liquid resin on the hardened coating and having a planarization light incident surface being in alignment with the adhesive; and a plurality of microlens on top of the first layer forming micro-molded patterns, wherein the plurality of microlens is formed by using a patterned member to press the liquid resin onto the hardened coating, and the liquid resin is hardened through a hardening member, wherein at least one of the plurality of microlens is a spherical lens with a sphere coefficient or an elliptical lens with an ellipse coefficient, and the plurality of nano-particles produces scattering, to effectively conceal or offset dark spots observable when there are defects in the micro-molded array layer and the micro-molded sheet, the micro-molded array layer has a height of 16 to 24 μm and a width of 35 to 48 μm; a part of upper surfaces of the first layer and upper surfaces of the plurality of microlens form a light exiting surface formed with micro-molded patterns thereon; and the micro-molded patterns occupy 70-90% of the surface of the micro-molded array layer, whereby the micro-molded sheet is provided with excellent diffusing effect, enabling effective concealment or offset of defects of a light guide plate and optical sheets at the same time of avoiding loss of luminance.