Method for preventing silver migration, array electrode and display panel

Abstract

The embodiment of the invention relates to the technical field of display, in particular to a method for preventing silver migration, an array electrode and a display panel, which are used for realizing improvement of the problem of display screen failure caused by silver migration. In the embodiment of the invention, a first insulating layer is laid in a first region of a first electrode, the sumof the thickness of the first insulating layer and the thickness of the first electrode is larger than the thickness of a second electrode; the second electrode and the first electrode are adjacent to each other and are arranged on the substrate at an interval; a silver layer is laid on a second region of the first electrode and the first insulating layer; and an electric field exists between thesilver layer and the second electrode when external signals are connected. Therefore, 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, and then the nearest distance between the silver layer and the second electrode is increased, when an electric field exists between the silver layer and the second electrode, the electric field intensity in the closest range direction can be reduced, and further, the problem of display screen failure caused by silver migration can be solved.

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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