The phenomenon illustrated on this slide is known as ElectroStatic Discharge (ESD). Pure static electricity accumulation will not cause damage to the IC electronic products. It is because of the process of discharging that damage will be formed. For example, when humans walk, their bodies accumulate a considerable amount of static electricity. If an IC chip is touched by someone with a build up of static electricity, it forms a static discharge path that will cause serious damage to the IC chips. ESD is characterized by high current discharge with ampere rating and the discharge time is as fast as the nano second time scale. Therefore, it has a strong capability to destroy the IC chip.