Patent ID: 8928826
Filing Date: 2015-01-06
Classification: G02F,H01L

Abstract:
1. A thin film transistor liquid crystal display (TFT-LCD) array substrate, comprising: a display area comprising a gate line, a data line and a common electrode line, a pixel electrode and a first thin film transistor (TFT) formed in each sub-pixel area defined by the gate line and data line which are crossed with each other; and a test area located at the peripheral of the display area and comprising a first test line, a second test line, a testing electrode and a second TFT, and the common electrode line extending to the test area from the display area, wherein a part of the second test line constitutes a gate electrode of the second TFT; the source electrode of the second TFT is electrically connected with the first test line; a drain of the second TFT is electrically connected with the common electrode line; and the common electrode line is connected with the testing electrode, wherein the common electrode line, the data line, and the source and drain electrodes of the second TFT are formed on a same layer, the common electrode line comprises a plurality of common electrode strips and a plurality of second connecting electrodes with one common electrode strip formed in each sub-pixel area; among the sub-pixel areas in one row, the common electrode strips in two adjacent sub-pixel areas are connected with an intermediate second connecting electrode; and one end of the common electrode strip in the test area is connected with the drain electrode of the second TFT, and wherein the common electrode line and the data line cross with each other, and the second connecting electrodes are provided at intersections between the common electrode line and the data line, and wherein the common electrode strips are located in a same layer as the data line and not connected with the data line, and the second connecting electrodes are located in a different layer from the common electrode strips and cross over the data line so as to connect common electrode strips in adjacent sub-pixel areas.