基于导光板底面直接熔合微棱镜取代目前背光系统平面反射膜和网点两层结构，推导了棱镜底角和出射亮度方向角之间的关系，提出导光板出射亮度方向角与棱镜远近光源底角的解析公式。用LightTools软件对导光板进行建模仿真，通过改变棱镜两个底角，得到出射亮度峰值方向和底角之间的变化规律。理论值与模拟仿真值基本符合，为背光模组一体化的研究提供理论和实验依据。依据上述规律，设计出一体化导光板结构，其中，微棱镜近光源角为86°，远光源角为37°，亮度达到现行3M背光系统指标。

Based on an integrated light guide plate (LGP) with fused micro-prisms replacing the common plane reflective film and the dot structures in the existing backlight system (BLS), the expressions of the bottom angles of the prisms and the direction of the emitting luminance are derived by using the geometric optics equations. The LGP with micro-prisms is modeled in Light Tools software. The relation between the bottom angles and the direction of peak emitting luminance is established. Simulation results are consistent with the analytical ones. Based on the analytical derivation and simulation, an integrated LGP is designed with the micro-prisms close angle of 86° and the far angle of 37°. The luminance of the integrated LGP meets the demand of the existing 3M BLS.