US 10,320,186 B2 · Display drive chip

Abstract

A display drive chip includes an electrostatic discharge (ESD) protection circuit unit configured to protect a circuit from ESD, an output including output pins for ouputting an output signal from a circuit disposed in an electric circuit region located in a central part of the display drive chip, a main voltage metal line electrically connecting the ESD protection circuit unit and the output to each other in the electric circuit region, an auxiliary voltage metal line that is connected to the ESD protection circuit unit and is disposed in a region of the chip outside the perimeter of the electric circuit region, and connection metal lines electrically connect the auxiliary voltage metal line and the output pins to each other.

Claims20

Dependent claims

A display drive chip comprising:

at least one electrostatic discharge (ESD) protection circuit;
an integrated circuit disposed in an electric circuit region located in a central part of the display drive chip;
an output comprising output pins at which signals from the integrated circuit are output;
a main voltage metal line electrically connecting the ESD protection circuit and the output pins to each other in the electric circuit region such that the output pins are electrically connected to the ESD protection circuit;
at least one auxiliary voltage metal line that is electrically connected to the ESD protection circuit and disposed in a region of the display drive chip outside the perimeter of the electric circuit region;
and
connection metal lines connecting the at least one auxiliary voltage metal line and the output pins to each other.

4 more elements

A display drive chip comprising:

a body having a central electric circuit region and a peripheral region extending around the perimeter of the central electric circuit region;
a display driver integrated circuit (DDI) confined to the central electric circuit region of the body of the chip;
electrostatic discharge (ESD) circuitry comprising an ESD protection circuit disposed in the central electric circuit region of the body of the chip;
a main voltage metal line that is electrically connected to the ESD protection circuit in the central electric circuit region, and to the display driver circuit (DDI);
at least one auxiliary voltage metal line that is confined to the peripheral region of the body of the chip and is electrically connected to the ESD protection circuit;
and
a series of connection metal lines running between and electrically connecting the main voltage metal line and the at least one auxiliary voltage metal line to each other.

4 more elements

Dependencies are inferred from the claim text.

Display drive chip

Life of this patent

Display drive chip

Life of this patent

Abstract

Claims20