Method of manufacturing components of display panel assembly from same mother substrate

A method of manufacturing a display panel assembly, the method comprising:

• preparing a mother substrate on which are defined a plurality of first regions and a plurality of dummy regions which is respectively between adjacent first regions;
• forming a plurality of pixel driving lines and a plurality of pixels which is connected to the pixel driving lines on each of the first regions of the mother substrate in a same process at the same time as forming a plurality of circuit connection lines on each of the dummy regions of the mother substrate;
• connecting a driving element which drives the plurality of pixels to the circuit connection lines of the dummy regions of the mother substrate;
• dividing the mother substrate including the pixel driving lines, the pixels and the circuit connection lines formed thereon to separate the first regions with the pixel driving lines and the pixels thereon and the dummy regions with the circuit connection lines thereon from each other,
• each of the separated first regions with the pixel driving lines and the pixels thereon defining a thin film transistor board of the display panel assembly, and each of the separated dummy regions with the circuit connection lines thereon defining a driving circuit board of the display panel assembly;
• and
• connecting the driving circuit board with the circuit connection lines thereon to the thin film transistor board with the pixel driving lines and the pixels thereon.