Array substrate and display panel

Abstract

The invention provides an array substrate and a display panel. The type of array substrate is composed of a bent region and a non-bent region. The non-bent region comprises a flexible substrate layer,a composite buffer layer, a source-drain layer, a flat layer and a pixel definition layer, which are stacked. The bent region comprises a flexible substrate layer, a source-drain layer, a flat layerand a pixel definition layer, which are stacked. Or the thickness of the composite buffer layer located in the bent region is smaller than the thickness of the composite buffer layer located in the non-bent region. The display panel comprises the array substrate. According to the invention, the distance between a metal trace and the substrate is reduced, so that the source-drain layers approachesor even reaches a stress balance line; the stress received by the metal trace can be reduced, and even the metal trace is substantially free from the own stress; if the metal trace is not stressed, the fracture risk thereof is reduced; and the bending resistance of a screen is improved.

Description

technical field [0001] The present invention relates to the display field, in particular to an array substrate and a display panel. Background technique [0002] With the vigorous rise of the organic light-emitting diode (OLED) business, foldable products are booming, and among them, bending technology has become a bottleneck restricting the further development of products. [0003] like figure 1 as shown, figure 1 It is a structural schematic diagram of an existing array substrate after being bent. The array substrate 90 includes a bending area 91 and a non-bending area 92 , and the array substrate 90 includes a flexible substrate layer 901 , a composite buffer layer 902 , a source-drain layer 903 , a flat layer 904 and a pixel definition layer 905 . Usually, after the bending area 91 is bent, the thickness of the array substrate 90 is generally 12-20um, and the thickness of the metal wiring (ie, the source and drain layer 903) located in the bending area 91 is 0.6-1um, ...

AI Technical Summary

Problems solved by technology

But in fact, due to insufficient bending process capability, external force interference, etc., the bending angle is not ideal, and the bending angle will be deformed inward, or the bending angle will be shifted to one side, so that the source and drain in the bending area Layer stress concentration increases, resulting in cracks or fractures, and the cracks extend through the entire cross-section of the line, so the signal transmission fails, resulting in abnormal images

[0005] If the line cracks are not solved, the yield rate cannot be guaranteed, and mass production is not feasible.

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