Lead line structure and display panel having the same

A display panel having a display region and a non-display region, the display panel comprising:

• a pixel array located in the display region;
• at least one driving device located in the non-display region;
• a plurality of first lead lines located in the non-display region and electrically connected to the pixel array and the at least one driving device;
• a first insulating layer covering the first lead lines, the first insulating layer having a plurality of trenches therein;
• a plurality of second lead lines located in the non-display region and electrically connected to the pixel array and the at least one driving device, the second lead lines and the first lead lines being alternately arranged, the second lead lines being disposed in the trenches of the first insulating layer;
• a second insulating layer covering the first insulating layer and the second lead lines, wherein a height of the second insulating layer above the second lead lines is smaller than a height of the second insulating layer above the first lead lines.