Display substrate, electroluminescence display panel and manufacturing method thereof

Abstract

Embodiments of the present invention provide a substrate for display, an electroluminescent display panel and a preparation method thereof, which relate to the field of display technology and can be used to detect whether there is water inside the electroluminescent display panel. The display substrate includes a plurality of light-emitting regions and non-luminous regions; the display substrate includes: a bottom plate and a first electrode layer, a pixel defining layer, a light-emitting functional layer and a second electrode layer arranged sequentially on the bottom plate; the pixel defining layer includes multiple Each opening area defines a light-emitting area; the first electrode layer includes a plurality of first electrodes, and one opening area exposes one first electrode; the light-emitting functional layer is at least located in the opening area; the display substrate also includes: on the photoluminescent layer located in the non-luminescent region; the photoluminescent layer is used to emit light under the excitation of excitation light, and after the photoluminescent layer reacts with water, the luminous intensity of the photoluminescent layer decreases.

Description

Display substrate, electroluminescence display panel and preparation method thereof technical field The present invention relates to the field of display technology, and in particular to a display substrate, an electroluminescence display panel and a manufacturing method thereof. preparation method. Background technique [0002] The electroluminescent display panel has the advantages of self-luminescence, low power consumption, wide viewing angle, fast response speed and high contrast ratio, etc. Therefore, it has become the mainstream development trend of the current display panel. However, if there is water inside the electroluminescence display panel, the water will electrochemically react with the cathode to make the cathode oxygen , resulting in an increase in cathode resistance and an increase in voltage drop, so that the center brightness of the electroluminescent display panel is opposite to the edge The brightness of the edge decreases, and the center of the...

AI Technical Summary

Problems solved by technology

[0003] However, if there is water inside the electroluminescent display panel, the water will electrochemically react with the cathode to oxidize the cathode, which will increase the resistance of the cathode and increase the voltage drop. Reduced, the center of the electroluminescent display panel is black, that is, there is a phenomenon that the center black group is bad and the edge is displayed normally.

In addition, the water in the electroluminescent display panel will also lead to the failure of the luminescent functional layer, affecting the normal luminescence of the luminescent functional layer.

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