Use of adjusted molecular dynamics method for dot pattern design in large scale light-emitting diode edge-lit backlight unit

摘要

We propose a molecular dynamics method incorporating a variable radius technique to generate the dot patterns printed on the bottom surface of the light guide plate for the large scale edge-lit light-emitting diode (LED) backlight unit. In addition, this method is also incorporated with the cell division technique and r-cut technique to help reduce the computational time for optimization. The process, including adjustment in the dot radius according to the feedback from an illuminance result of the optical software, which compares to the other methods, can reduce the time for computation and the process can be incorporated into an optical design phase quite easily. By employing the above method, the time for obtaining a random dot distribution for a 42-in. LED backlight with a thickness of 4 mm and uniform illuminance of 80%, is significantly shortened.