Patent ID: 7777857

Claim:
A substrate of a display device for packaging a driving integrated circuit (IC) including input leads and output leads, comprising: an input pad group corresponding to the input lead on the substrate along a first direction; an output pad group corresponding to the output lead on the substrate along a second direction transverse to the first direction, the output pad group including a plurality of output pads; an extra input pad group adjacent to the input pad group along the first direction; and an extra output pad group adjacent to the output pad group along the second direction, the extra output pad group including a plurality of extra output pads, wherein the plurality of output pads are disposed in a first zigzag pattern and the plurality of extra output pads and the plurality of output pads adjacent to the plurality of extra output pads form a second zigzag pattern having a mirror image of the first zigzag pattern, and wherein the second zigzag pattern includes a part of the plurality of output pads of the first zigzag pattern.