Patent ID: 9710081
Date: 2017-07-18
CPC Classifications: G06F

Claim:
1. A signal transmit channel integrated with electrostatic discharge (ESD) protection, comprising: a transmit switch having a first end coupled to receive a transmit signal, the transmit switch being controlled by an associated scanning signal such that the transmit switch is closed to pass the transmit signal at a specific time; and an ESD protection circuit having a first input end electrically coupled to a second end of the transmit switch and having a second input end coupled to receive the associated scanning signal; wherein the ESD protection circuit comprises: a first N-type transistor and a first P-type transistor that are connected in series and respectively connected to ground and power; a second P-type transistor having a source and a drain respectively connected to the power and a gate of the first P-type transistor; a first resistor-capacitor circuit having an output fed to a gate of the second P-type transistor; a switching controller and a second N-type transistor that are connected in series and respectively connected to the power and the ground, an input end of the switching controller being coupled to receive the associated scanning signal and an output end of the switching controller being connected to a gate of the first N-type transistor; and a second resistor-capacitor circuit having an output fed to a gate of the second N-type transistor.