Patent ID: 8199268

Claim:
A method of manufacturing a display panel, the method comprising: forming a first display substrate including a plurality of pixel electrodes, a plurality of test signal lines, and a plurality of test pads; forming a second display substrate including a common electrode; forming a short point on at least one of the test pads; dividing the common electrode into a plurality of regions insulated from each other; aligning and attaching the first display substrate and the second display substrate to each other; removing an edge portion of the first display substrate to expose an edge portion of the second display substrate; applying a first voltage to the first display substrate and the second display substrate in a first region of the plurality of regions through a first voltage application portion on the exposed edge portion of the second display substrate, wherein the first voltage application portion is connected to a first portion of the common electrode, and the first voltage is applied to the first display substrate through the first portion of the common electrode, the short point and the at least one of the test pads; and applying a second voltage to the second display substrate in a second region of the plurality of regions insulated from the first region, through a second voltage application portion on the exposed edge portion of the second display substrate, wherein the second voltage application portion is connected to a second portion of the common electrode insulated from the first portion, and the second voltage is not applied to the first display substrate.