Electrification and space charge under electric stress in high temperature on epoxy resin

The semiconductor devices which used the electric field effect have the possibility to cause the malfunction due to the electrification. There is a case in which the anti-static additives (ASA) are used in order to avoid malfunction due to the electrification of the epoxy resin. In this report, the electrification phenomena under electric field stress in a high temperature (3-6 kV/mm, 100-155degC) in epoxy resin have been observed on the effect of ASA by using one-and two- dimensional space charge distribution measurement system. From the results of space charge measurement, it was found that the epoxy resin with ASA have made the following effect to the space charge formation by the high-temperature(100,155degC) and electric field charging (10 kV/1.5 mm, 6 kV/1.5 mm). It is considered that the ASA reduce the hetero electric field near the electrode interface; the appropriate quantity addition of the ASA to the epoxy resin is effective for relaxation of the electrification of the epoxy resin in the high temperature.