Chip Level EMI Approach for LCD TV Panels

In this paper, chip level approach is accomplished for solving EMI problems of LCD TV panel. All the EMI noises from 30 [MHz] to 1[GHz] are classified into three groups by its noise sources, that is the, IC blocks generating the signals. Then, IC level solution is applied in order to reduce the noises and it is proved that this approach is more powerful and essential than the traditional countermeasure such as gasket tape or shielding method. Finally, this method is applied to a real LCD module and it is verified that the proposed method have excellent effects on eliminating EMI troubles from LCD TV panels.