Patent attributes
The present application belongs to field of integrated circuit and discloses an electrostatic discharge protection circuit comprising a first N-type transistor and a second N-type transistor. The first N-type transistor comprises a first gate terminal coupled to a ground terminal; a first electrode terminal coupled to the first gate terminal; and a second electrode terminal. The second N-type transistor comprises a second gate terminal coupled to a metal pad; a third electrode terminal coupled to the second gate terminal; a fourth electrode terminal, coupled to the second electrode terminal; and a first deep N well, disposed under the third electrode terminal and the fourth electrode terminal. The ESD protection circuits provided by the embodiments of the present application have advantages of small circuit area and good ESD protection.
