Pixel unit and manufacturing method thereof, array substrate and display device

Abstract

The invention provides a pixel unit. The pixel unit includes a thin film transistor, a pixel electrode, a first insulating layer, a second insulating layer, a common electrode and common electrode wires; the common electrode wires are electrically connected to the common electrode, the first insulating layer is disposed between a drain electrode of the thin film transistor and the pixel electrode,and the pixel electrode is electrically connected to the drain electrode through a via hole running through the first insulating layer; the second insulating layer is disposed between the pixel electrode and the common electrode wires to insulate and separate the pixel electrode from the common electrode wires, and a part of the second insulating layer and a part of the common electrode wires both are located in the via hole. The invention also provides an array substrate, a display device and a manufacturing method of the pixel unit. When bright spot abnormality occurs in the pixel unit, a dark spot repair operation can be conveniently performed on the pixel unit.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, to a pixel unit, a method for manufacturing the pixel unit, an array substrate including the pixel unit, and a display device including the array substrate. Background technique [0002] The display panel includes a plurality of pixel units, figure 1 Shown in is a schematic cross-sectional view of a pixel unit of a display panel. As shown in the figure, the pixel unit includes a thin film transistor 100 formed on a base substrate 800 , a first insulating layer 500 , a common electrode 300 and a pixel electrode 200 . The thin film transistor 100 includes a drain 110 , a source 120 , a gate 140 and an active layer 130 . It is easy to understand that there is an insulating space between the gate 140 and the active layer 130 . The provision of the first insulating layer 500 can reduce parasitic capacitance and line delay, and generally the first insulating layer 500 is made...

AI Technical Summary

Problems solved by technology

[0006] However, if figure 1 As shown, there is very little overlap between the pixel electrode 200 and the common electrode 300, and it is difficult to electrically connect the two without affecting the normal display.

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