DISPLAY PANEL HAVING PROCESS KEY THEREIN

摘要

In a display panel which includes a display region where at least one thin film transistor is formed in a pixel region, and a non-display region where at least one power supply line part for applying power to the display region is formed, part of the power supply line part is opened to form an opening part. A process key including a key pattern is formed in the opening part. According to the present invention, a process key used in various processes in the display panel of a display device is formed in a power supply line part which has a relatively large width or thickness and is arranged in the non-display region of the panel. Thereby, the efficiency of manufacturing a glass substrate can be improved.