The Structural Design And Optimization Of Edge LED Light Guide Plate

Aiming at two inches light guide plate, based on the specific formulation of the designing and optimization process, this paper finally accomplishes the work of designing and optimization of six light guide plate structures by the simulation using optical design software TracePro. First, through introducing the development and industry trends of the FPD industry and backlight module, we confirm the purpose and significance of the study; second, we introduce the relevant principles, then present the working principles and actions of each films and components through expounding the structure of the backlight module; third, this paper develops a process for structure designing and optimization of the light guide plate. In this process a model is built using the software TracePro, then structures are optimized with regional division method, finally a high evenness light guide plate structure is obtained; Finally, in order to measure the error of uniformity caused by the dispersion in full-color display, we simulate LGP optimized under the dominant wavelengths of RGB, then calculate the error through the analysis of illumination map. In these six structures optimized, LGP structure with cuneiform double-extended light source has the smallest dispersion error 2. 35%; the structure with cuneiform four-extended light source has the highest uniformity, and the evenness of RGB distribution graphics have reached higher than 80 percent; while the LGP structure which has the spherical framework for light extending has the best symmetry; and the LGP structures with cuneiform double-extended and double-extended light source have the better exportable characteristics.