A kind of array substrate and liquid crystal display device

Abstract

Provided are an array substrate and a display apparatus. The array substrate comprises a transparent substrate (6) comprising display pixel areas and peripheral non-display pixel areas. Gate lines (1) and data lines (2) are disposed on the transparent substrate (6) in a mutually crossed manner, and the gate lines (1) and the data lines (2) disposed in a mutually crossed manner divide each pixel area and each peripheral non-display pixel area into multiple pixel element. Each pixel unit comprises a driving thin film transistor (3), pixel electrodes, and common electrodes. The driving thin film transistor (3) comprises a gate (31) connected to the gate line (1), a source (32) connected to the data line (2), and a drain (33). The common electrode is disposed above the pixel electrode, and a passivation layer separates the common electrode from the pixel electrode. Pixel electrodes of each pixel unit are not electrically connected from each other. Common electrodes of the display pixel area are electrically connected to each other. Common electrodes of the peripheral non-display pixel area are electrically insulated mutually from common electrodes of the display pixel area. A via hole is disposed in a passivation layer (8) of each pixel unit of the peripheral non-display pixel area, so that a common electrode corresponding to each pixel unit of the peripheral non-display pixel area is electrically connected to the drain (33) of the driving thin film transistor (3) of a corresponding pixel unit through the via hole.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an array substrate and a liquid crystal display device. Background technique [0002] The advanced ultra-dimensional field switching liquid crystal display device is a horizontal electric field driven liquid crystal display device, which is provided with a common electrode and a pixel electrode on an array substrate to form a horizontal electric field. Such as figure 1 , figure 2 As shown, the high-aperture-ratio advanced ultra-dimensional field switch type liquid crystal display device is provided with the common electrode 5 on the array substrate above the pixel electrode 4, the common electrode is a whole, and slits are provided in the corresponding pixel area. A passivation layer 8 is provided between the common electrode 5 and the pixel electrode 4 for electrically insulating the common electrode 5 and the pixel electrode 4 to form a storage capacitor. Specifically, the...

AI Technical Summary

Problems solved by technology

However, since the test area is set on the periphery of the display pixel area of ​​the substrate, although the structure and shape parameters of the driving thin film transistor and the display area driving thin film transistor are the same, the difference in the micro-environment during the manufacturing process may make the driving thin film in the test area The characteristics of the transistor are quite different from the characteristics of the driving thin film transistor in the display pixel area

In addition, when defects such as afterimages or insufficient contrast occur during the product quality inspection process and the characteristics of the driving thin film transistor need to be tested, since the surrounding test area has been cut off, the driving thin film transistors in the display pixel area and the surrounding non-display pixel area are both Covered by a passivation layer, the characteristics of the driving thin film transistors on the array substrate cannot be detected, which will cause troubles for later product analysis

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