A display panel comprising: a first display substrate including a first base substrate having a top surface and a side surface (BS1-S) extending in a direction intersecting the top surface; a second display substrate including a second base substrate facing the first base substrate; an insulating layer disposed between the first base substrate and the second base substrate; a first insulating structure disposed between the insulating layer and the first base substrate, wherein the first insulating structure is in contact with the insulating layer; a pixel disposed between the first base substrate and the second base substrate; a signal line (PL-D) having a side surface (PL-DS) substantially aligned with the side surface (BS1-S) of the first base substrate, wherein the signal line (PL-D) is disposed on the first base substrate; a second insulating structure overlapping the signal line (PL-D) and being in contact with the first insulating structure, wherein the second insulating structure has a side surface (IS2-S) substantially aligned with the side surface (BS1-S) of the first base substrate; a connection pad being in contact with the side surface (BS1-S) of the first base substrate, the side surface (PL-DS) of the signal line (PL-D), and the side surface (IS2-S) of the second insulating structure; and characterized in that a spacer is disposed between the first display substrate and the second display substrate that is configured to maintain a gap between the first display substrate and the second display substrate, and in that the first insulating structure and the spacer are formed of the same material. a first display substrate including a first base substrate having a top surface and a side surface (BS1-S) extending in a direction intersecting the top surface; a second display substrate including a second base substrate facing the first base substrate; an insulating layer disposed between the first base substrate and the second base substrate; a first insulating structure disposed between the insulating layer and the first base substrate, wherein the first insulating structure is in contact with the insulating layer; a pixel disposed between the first base substrate and the second base substrate; a signal line (PL-D) having a side surface (PL-DS) substantially aligned with the side surface (BS1-S) of the first base substrate, wherein the signal line (PL-D) is disposed on the first base substrate; a second insulating structure overlapping the signal line (PL-D) and being in contact with the first insulating structure, wherein the second insulating structure has a side surface (IS2-S) substantially aligned with the side surface (BS1-S) of the first base substrate; a connection pad being in contact with the side surface (BS1-S) of the first base substrate, the side surface (PL-DS) of the signal line (PL-D), and the side surface (IS2-S) of the second insulating structure; and characterized in that a spacer is disposed between the first display substrate and the second display substrate that is configured to maintain a gap between the first display substrate and the second display substrate, and in that the first insulating structure and the spacer are formed of the same material.