LCD panel apparatus and testing method using the same

An LCD panel apparatus, comprising:

• a pixel array comprising a plurality of pixels;
• a first common electrode terminal;
• a second common electrode terminal;
• and
• a plurality of common lines connected to common electrodes of the pixels, a first side of each of the common lines extending out of the pixel array and being connected to a first current directional device in series, and a second side of each of the common lines extending out of the pixel array and being connected to a second current directional device in series;
• wherein a first end of each of the first current directional devices is connected to the first common electrode terminal, a second end of each of the first current directional devices is connected to the first side of each of the common lines and the second common electrode terminal, a first end of each of the second current directional devices is connected to the second side of each of the common lines, and a second end of each of the second current directional devices is connected to the first common electrode terminal;
• by setting the first current directional devices and the second current directional devices, currents in each of the common lines flow from the first side to the second side of each of the common lines to detect any defect in the common lines.

A testing method for LCD panel apparatus, the LCD panel comprising a pixel array and a first common electrode terminal for detecting any defects in common lines of the pixel array, the testing method comprising:

• (a) providing a first current directional device and connecting the first current directional device in series between a first side of each of the common lines and the first common electrode terminal;
• (b) providing a second current directional device and connecting the second current directional device in series between a second side of each of the common lines and the first common electrode terminal;
• (c) providing a second common electrode terminal electrically connected between each of the first current directional devices and the first side of each of the common lines;
• and
• (d) supplying different voltages to the first common electrode terminal and the second common electrode terminal, thereby currents flowing through each of the common lines are in a same direction.