手机侧背光照明导光板设计模拟

Side backlighting light guide plate of mobile phone

为了提高手机侧背光照明导光板的亮度及亮度均匀性,对上表面为41 mm×26 mm的楔形导光板进行了模拟仿真,并对导光板底面不同的印刷式散射网点排布、不同的楔形导光板底面角度及不同的球缺形凸包网点排布进行了研究。结果显示,导光板底面排布印刷式散射网点时,导光板上表面亮度分布的均匀性较差,而出射光通量的百分比小于26%;当导光板底面排布球缺形凸包网点时,导光板上表面亮度分布的均匀性得到提高,出射光通量的百分比提高10%。楔形导光板底面角度81°时的出光效果优于85°时的效果。

In order to improve the luminance and brightness uniformity of mobile phone side backlighting light guide plates（LGP）,a wedge-shaped LGP with the upper surface of 41mm×26mm was simulated.The printing scattered dots on bottom surface,the wedge angle of LGP underside and hemispherical convex hull arrangement on the surface were researched.The results showed that the brightness uniformity of upper surface was poor and the percentage of output luminous flux was less than 26% when the LGP bottom was printed with scattered dots,the brightness uniformity of upper surface was improved and the percentage of output luminous flux is increased by 10% when the hemispherical convex hulls were arranged on the LGP bottom.The lighting effect of LGP with 81° wedge angle was better than 85°.