Electrostatic discharge protection apparatus
AssigneeWinbond Electronics Corp.
InventorsChien-Ti Hou, Fu-Chien Chiu, Wei-Fan Chen
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Abstract
The present invention reveals an electrostatic discharge protection apparatus including a silicon controlled rectifier, a triggering voltage adapter network and a holding voltage adapter network. Additionally, the triggering voltage adapter network and the holding voltage adapter network are coupled to the silicon controlled rectifier. The present invention can change the characteristic of current vs. voltage by adjusting the triggering voltage and the holding voltage of the silicon controlled rectifier to meet the special requirement of various chips, and effectively prevent the chips from being damaged caused by the electrostatic discharging.
Claims12
An electrostatic discharge protection apparatus, comprising:
- a substrate exhibiting a first conductive type, including:
- (a) a first region exhibiting a second conductive type, having a fourth region exhibiting said first conductive type;
- (b) a second region exhibiting said first conductive type;
- (c) a third region exhibiting said second conductive type;
- (d) a fifth region exhibiting said second conductive type;
- a triggering voltage adapter network electrically connected to said second, said third and said fourth regions;
- a holding voltage adapter network electrically connected to said second, said third, said fourth and said fifth regions:
- and
- a gate electrically connected to said triggering voltage adapter network.
Dependencies are inferred from the claim text.