A method for preventing silver migration, array electrode and display panel

Abstract

The embodiments of the present invention relate to the field of display technology, and in particular to a method for preventing silver migration, an array electrode and a display panel, so as to improve the problem of display screen failure caused by silver migration. In the embodiment of the present invention, the first insulating layer is laid on the first region of the first electrode, and the sum of the thicknesses of the first insulating layer and the first electrode is greater than the thickness of the second electrode; the second electrode is adjacent to the first electrode and arranged at intervals On the substrate; laying a silver layer on the second region of the first electrode and the first insulating layer; when the silver layer and the second electrode are connected with an external signal, there is an electric field between them. In this way, compared with the silver layer on the first electrode in the prior art, the height of the silver layer from the first electrode can be increased in the embodiment of the present invention, thereby increasing the shortest distance between the silver layer and the second electrode. When there is an electric field between the layer and the second electrode, the electric field intensity in the direction of the shortest distance can be reduced, thereby improving the failure of the display screen caused by silver migration.

Description

technical field [0001] The embodiments of the present invention relate to the field of display technology, and in particular to a method for preventing silver migration, an array electrode and a display panel. Background technique [0002] In LCD or OLED products, the array electrode (Array Pad) in the Outer Lead Bonding (OLB) area will use Ag as the basis of the contact pad (Pad Contact), and based on the narrow frame requirements, the distance between Array Pad Display products will be made smaller and smaller. [0003] In the existing technology, such as figure 1 The shown OLB area includes electrodes 101, 102, 103, and 104 whose surfaces contain Ag layers. Since the distance between every two array test electrodes in the display screen is very small, under the action of electric field and water, silver is easy to Dissociation produces silver ions, which migrate from high potential to low potential, and form flocculent or dendrite-like extensions at the edge of electrod...

AI Technical Summary

Problems solved by technology

This silver migration phenomenon can easily lead to short circuits between adjacent Array Pads, resulting in poor display, and such poor display is often difficult to detect during the manufacturing process of Array and OLED evaporation packaging, and takes a long time to use in subsequent processes or client lighting. Only then will it be discovered that it belongs to the problem of reliability risk

[0004] Therefore, there is an urgent need for a method to prevent silver migration, so as to improve the display screen failure problem caused by silver migration

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