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通过合理选材并优化机械结构,设计了一款低功耗的118cm(47in)LED背光源。对膜材进行筛选,采用1层扩散膜、2层棱镜膜和1层双层增亮膜(DBEF)进行搭配,保证了背光源的亮度。根据试验确定了LED之间的距离、LED发光面到导光板(LGP)入光面之间的距离和LED发光面与LGP入光面两者的垂直距离。依据上述试验数据进行样品制作并与同类产品对比测试,结果表明:在满足同等光学特性的前提下,所设计的LED背光源具有低功耗的优点。
By reasonably selecting and optimizing the mechanical structure, a low-power 118-cm (47in) LED backlight has been designed. Films were screened using a 1-layer diffusion film, 2-layer prism film and 1 layer double brightness enhancement film (DBEF) to ensure the brightness of the backlight. According to the experiment, the distance between LEDs, the distance between the LED luminous surface and the light incident surface of the LGP, and the vertical distance between the LED luminous surface and the LGP light incident surface are determined. Based on the above experimental data, sample preparation and comparison with similar products were conducted. The results show that the designed LED backlight has the advantages of low power consumption while meeting the same optical characteristics.