Further, the traces W further includes several grounding traces b-G The grounding traces b-G are adjacent to the power trace b-P, and serve as reference ground to the power trace b-P, to construct a loop. The grounding traces b-G also serve as a shield against electromagnetic interference by adjacent electronic devices. In one embodiment, there are three grounding traces b-G. One of the grounding traces b-G is disposed outside the second power trace b-P2 away from the display region 101, and serves as the reference ground to the second power trace b-P2 away from the display region 101. Another grounding trace b-G is disposed outside of the second power trace b-P2 adjacent to the display region 101 and the third power trace b-P3, and serves as the reference ground to the second power trace b-P2 adjacent to the display region 101. The third grounding trace b-G is disposed between the first power trace b-P1 and the third power trace b-P3, and serves as a reference ground to the first power trace b-P1 and the third power trace b-P3. A width of the grounding trace b-G is in a range from 10 μm to 2.35 mm.

The display panel 10 sets grounding traces b-G adjacent to power trace b-P, thus, the grounding traces b-G serve as reference ground to the power trace b-P for avoiding distortion of the high-speed signal traces b-S. The grounding traces b-G also serve as shields against electromagnetic interference from the external electronic devices, thus a display effect of the display panel 10 is improved. The grounding traces b-G are fundamental in establishing an electromagnetic induction with the electromagnetic fields from an external electronic device. The grounding width of the grounding traces b-G is 10 μm or 20 μm can reduce a frame width of the display panel 10.