Patent ID: 7375374
Filing Date: 2008-05-20
Classification: G02F,H01L

Abstract:
1. A method for repairing a thin film transistor array substrate, in particular, for repairing a thin film transistor array substrate comprising a substrate; a plurality of scan lines disposed on the substrate; a plurality of data lines disposed on the substrate such that the data lines and the scan lines together define an array of pixel areas on the substrate; a plurality of common lines disposed in parallel to and alternate with the scan lines on the substrate, wherein the respective sides of each common line have a plurality of outward extending branches and each branch is disposed next to a corresponding data line; a plurality of thin film transistors disposed inside the respective pixel areas and electrically connected to their corresponding scan line and data line; a plurality of pixel electrodes disposed inside the respective pixel areas and electrically connected to their corresponding thin film transistor; and a plurality of repairing lines disposed over at least one scan line and laid alternately with the data lines, wherein the two ends of each repairing line partly overlap with the two adjacent common lines beside the scan line, each branch has a protruding portion that extends to an area above a corresponding data line and overlaps with part of the data line; wherein the thin film transistor array substrate has a defect in a common line that leads to a broken connection in the common line, wherein the repairing method comprises the steps of: electrically connecting the two ends of the defective common line to a first repairing line and a second repairing line respectively; and electrically connecting the first repairing line and the second repairing line to another common line.