Display backboard, manufacturing method thereof and display device

Abstract

The invention provides a display backboard, a manufacturing method thereof and a display device. In the display backboard, a light-emitting structure comprises a first electrode layer, a light-emitting layer and a second electrode layer, at least part of the light-emitting structure is located in an opening of a pixel definition layer, and the first electrode layer is arranged close to a substrate; the isolation structure is located on the side, away from the opening, of the pixel definition layer; one part of the second electrode layer extends to the side surface, close to the pixel definition layer, of the isolation structure from the opening of the pixel definition layer along the pixel definition layer through a gap between the pixel definition layer and the isolation structure, and the second electrode layer is electrically connected to the isolation structure; the light-emitting layer is not connected at the gap between the pixel definition layer and the isolation structure; in the direction perpendicular to the substrate, the height of the isolation structure is larger than that of the first electrode layer. The thickness of the first electrode layer is small, the problem that a metal film layer of the reflection first electrode layer swells or falls off can be smoothly solved, and then the display effect and the product yield of the product are remarkably improved.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a display backplane, a manufacturing method thereof, and a display device. Background technique [0002] Transparent display products are widely used in in-vehicle displays such as automobiles / subways and window displays in hotels / clothing stores. Large-scale transparent display products will make the cathode very thin in order to improve the transparent effect, but this will lead to the problem of large IR drop (voltage drop) of the cathode. An effective solution is to connect the cathode with the conductive structure on the backplane. Effectively overlap, thereby greatly reducing the IR drop problem. The current effective lap joint method is to prepare an "I"-shaped Rib structure on the backplane, so that the protruding Tip corner on the upper end can smoothly cut off the vapor-deposited EL luminescent material, and then the cathode can be deposited in and smooth...

AI Technical Summary

Problems solved by technology

Therefore, an object of the present invention is to provide a display backplane, which can well solve the problem of large voltage drop of the second electrode layer, or improve the stability of the structure of the first electrode layer in the light emitting structure

Images