Patent ID: 6057579
Filing Date: 2000-05-02
Classification: H01L

Abstract:
A transistor structure of an ESD protection device, comprising:a substrate;a gate structure located above the substrate with a plurality of protecting parts and a connecting part located on one side of the gate structure to connect each of the protecting parts, wherein:the protecting parts further comprise of a first protecting part and a second protecting part that is wider than the first protecting part, wherein the first protecting part is located in the middle of the gate structure and the second protecting part is located farther from the middle of the gate structure compared to the first protecting part;a plurality of sources and drains alternating with the protecting parts in the substrate, wherein the sources further comprise of a first source isolated from the drain by the first protecting part and a second source isolated from the drain by the second protecting part;a substrate junction located in the substrate and in contact with the second source with a butting face; anda butting contact located above the butting face wherein the butting contact connects to the second source and the substrate junction.