基于Tracepro软件的LCD TV直下式背光源均匀性仿真

Uniformity Simulation of LCD TV Direct Backlight Based on Tracepro

采用Tracepro软件模拟背光源不均匀现象时,模拟结果与人眼实际观察之间存在差异。分析了造成二者之间差异的原因,根据韦伯定律最小可觉差概念,提出了应用于判断液晶显示器背光源均匀性的公式。将该公式拟合得到的人眼实际观察图与Tracepro的模拟追迹图相对比,以二者吻合度判断Tracepro参数设置的正确性。该仿真方法将Tracepro软件模拟与人眼实际观察结合起来,可帮助设计者在开发阶段更好地对产品进行评估。

This paper researches the difference between tracepro simulation and human eyes observation in uniformity of LCD TV direct backlight. In order to make the simulation result reflects the true situation, the data simulated by tracepro was put into the formula that adapt to the human eyes observation, the Weber coefficient of each sampling point was calculated. Comparing with the vision＇s Weber coefficient 0. 017, it is determined whether or not there will be nonuniformity, then re-fitting the new graph of backlight uniformity. This can help the designer evaluate the product better in design step.