Abstract
This study is concerned with the dynamic response of TFT-LCD modules that are struck by a half-sine impact acceleration through the bolts connecting with the LCD display module. Then, an improvement is performed by redesigning the parts that may possibly be damaged under the impact. First, we establish a simplified model of the panel structures of the TFT-LCD by several reasonable assumptions, and then develop the dynamic equations by Lagrange’s method for the purpose of understanding the impact dynamic characteristics. We also construct the finite element model of the panel structures of the TFT-LCD by the professional finite element software, ANSYS LS-DYNA, and set the boundary conditions and impact forces in accordance with the impact experiment. By analyzing the results of the impact simulation, we can observe the displacements and distributions of von-Mises stresses of each component of TFT-LCD modules. Comparing the half-sine impacting simulation with experiment, the joints between the frame and bezel around the TFT-LCD panel modules occur to separate. In this study, according to the causes of separation reason and the constraints of the motion degrees of freedom, we employ a material with higher rigidity to replace the original material of the bezel, and design a block on the joint to constrain another degrees of freedom to prevent the joints from separation.