Patent ID: 8520158
Filing Date: 2013-08-27
Classification: G02F,H01L,H05F

Abstract:
1. A substrate for a display device, the substrate comprising: a display cell including a display cell pad and a signal line, the signal line extending from the display cell pad and being electrically connected to a pixel; a test pad portion, distinct from the display cell pad, projecting from the display cell, electrically connected to the signal line of the display cell and receiving a test signal for detecting an error in the signal lines, the test pad portion comprising at least one data testing pad for detecting an error in data lines of the display cell, at least one gate testing pad for detecting an error in gate lines of the display cell, and a storage testing pad for detecting an error in storage lines of the display cell; an electrostatic preventing pattern, configured to decrease a level of accumulated electrical charge from the test pad portion, electrically connected to the test pad portion, disposed adjacent to the test pad portion, including a plurality of edges and formed from a metal pattern; a connecting line extended from the electrostatic preventing pattern and electrically connected to the display cell pad; a connecting line portion including the connecting line and the electrostatic preventing pattern; and a connecting portion which electrically connects an end portion of the test pad portion to an end portion of the connecting line portion using a transparent electrode pattern.