Patent ID: 8053293
Filing Date: 2011-11-08
Classification: G02F

Abstract:
1. A method of manufacturing a display substrate, comprising: forming a signal transmission line that transmits an image signal to a switching element on an insulating substrate; forming a first insulating layer on the insulating substrate to cover the signal transmission line, the first insulating layer having a contact hole through which the signal transmission line is partially exposed; forming a test signal pad having an extended portion on the first insulating layer, the extended portion electrically and directly connected to the signal transmission line through the contact hole, the extended portion being extended in a direction toward an inner portion of the surface area of the insulating substrate, the test signal pad and the extended portion being formed from a same conductive layer; testing the switching element and the signal transmission line by applying a test signal to the test signal pad; and disconnecting the test signal pad from the signal transmission line by irradiating the extended portion adjacent to the test signal pad with a laser beam.