Display panel and manufacturing method thereof

A method for manufacturing a display panel, comprising:

• forming a plurality of signal lines and a plurality of pixels connected thereto on a display portion;
• forming a test pad for testing the signal lines;
• forming a connecting wire for connecting the signal line and the test pad;
• and
• forming a dummy pad to which the connecting wire is not connected,
• wherein:
• the signal lines, the pixel, the test pad, or the connecting wire is formed by a photolithography process using a divided exposure method for dividing into a plurality of shots and exposing the same by use of a same mask;
• the divided exposure method comprises:
• exposing a shot to perform an initial exposure stage;
• placing an intermediate shot so that there is an overlapping portion where part of the shot of the initial exposure stage is overlapped, and exposing the intermediate shot to thus perform an intermediate exposure stage;
• placing a final shot so that there may be an overlapping portion where part of the shot of the intermediate exposure stage is overlapped;
• and
• exposing the final shot to thus perform a final exposure stage;
• and
• patterns of the overlapping portions correspond to each other.