The present invention relates to a printed circuit board and an image display device including same. The printed circuit board according to an embodiment of the present invention includes a power pattern layer, a ground pattern layer, and a wiring pattern layer on which circuit elements are disposed, wherein the wiring pattern layer includes a signal line pattern through which an electrical signal is transmitted, and a ground pattern electrically disconnected from the signal line pattern and having at least one via hole formed therein which is electrically connected to the ground pattern layer, wherein the signal line pattern comes into contact with a first end of an overvoltage cutoff element that operates in response to an overvoltage, greater than or equal to a predetermined voltage value, being applied to the signal line pattern, wherein the ground pattern includes a first detailed pattern coming into contact with a second end of the overvoltage cutoff element, a second detailed pattern having the via-hole formed therein, and a plurality of third detailed patterns electrically connecting the first detailed pattern and the second detailed pattern, wherein the via hole is formed in a remaining region except for a plurality of first regions of the second detailed pattern that extend from each of the third detailed patterns in a length direction of each of the plurality of third detailed patterns. Various other embodiments are possible.

An over-voltage circuit protection device includes a voltage-dependent resistor component, and a printed circuit board (PCB) component connected to the voltage-dependent resistor component through first and second conductive lead layers. The PCB component includes a PCB body, a first conductive portion, a second conductive portion, at least one first conductive via and at least one second conductive via. The first and second conductive portions are disposed on the PCB body, and are electrically insulated from each other. The first and second conductive vias extend through the PCB body, and are defined by via-defining walls respectively covered by the first and second conductive portions.

The present invention relates to a printed circuit board and an image display device including same. The printed circuit board according to an embodiment of the present invention includes a power pattern layer, a ground pattern layer, and a wiring pattern layer on which circuit elements are disposed, wherein the wiring pattern layer includes a signal line pattern through which an electrical signal is transmitted, and a ground pattern electrically disconnected from the signal line pattern and having at least one via hole formed therein which is electrically connected to the ground pattern layer, wherein the signal line pattern comes into contact with a first end of an overvoltage cutoff element that operates in response to an overvoltage, greater than or equal to a predetermined voltage value, being applied to the signal line pattern, wherein the ground pattern includes a first detailed pattern coming into contact with a second end of the overvoltage cutoff element, a second detailed pattern having the via-hole formed therein, and a plurality of third detailed patterns electrically connecting the first detailed pattern and the second detailed pattern, wherein the via hole is formed in a remaining region except for a plurality of first regions of the second detailed pattern that extend from each of the third detailed patterns in a length direction of each of the plurality of third detailed patterns. Various other embodiments are possible.

A transient voltage protection device includes an element body; a first external electrode disposed on a surface of the element body; a second external electrode disposed on the surface of the element body; a first internal electrode; and a second internal electrode. The first internal electrode is disposed in the element body and connected to the first external electrode. The second internal electrode is opposed to the first internal electrode in the element body and is connected to the second external electrode. The first internal electrode includes a first end connected to the first external electrode, and a second end positioned in the element body and separated from the surface of the element body. The second end includes a corner portion including an edge opposed to the second internal electrode. The edge has a curved shape in a plan view of the first internal electrode.