An electroluminescent display panel and a display device

Abstract

The invention discloses an electroluminescence display panel and a display device, which are used for improving the uniformity of light emission of the electroluminescence display panel. An electroluminescent display panel, including a base substrate, a pixel circuit on the base substrate, and a plurality of conductive traces electrically connected to the pixel circuit, wherein at least part of the conductive traces are directly above or directly below the conductive connection wires ; The conductive trace is electrically connected to the conductive connecting wire arranged directly above or directly below the conductive trace; and the difference between the first thickness value and the second thickness value is less than or equal to a preset value; the first thickness value is conductive The sum of the thickness value of the wiring and the thickness value of the conductive connecting line arranged directly above or directly below the conductive wiring; the second thickness value is the thickness value of the gate layer included in the pixel circuit and the source layer included in the pixel circuit. The sum of the thickness values ​​of the drain layer.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an electroluminescence display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) display technology has the advantages of self-illumination, wide viewing angle, high contrast ratio, low power consumption, high response speed, etc., and has been more and more applied to the display field. In the specific production process of OLED devices, the film layer such as the light-emitting film layer of OLED devices is usually produced by solution process. The solution process can use spin coating (Spin Coating), slot coating (Slot Die Coating), nozzle printing (Nozzle Printing) , Inkjet Printing, Spray Coating and other methods. [0003] The OLED device is an electroluminescent device, and the electroluminescent device has high requirements on the thickness uniformity of the film layer produced by the solution process. The OLED device with a t...

AI Technical Summary

Problems solved by technology

However, due to the design of the backplane of the OLED device, there will be areas with uneven film distribution, so that when the film layer is fabricated through the solution process, the produced film layer will be uneven, which will eventually lead to the problem of uneven light emission of the OLED device.

[0004] In order to solve the above problems, the method commonly used in the prior art is to make a flat layer on the OLED device backplane before making the film layer in the solution process. However, due to the limitation of the characteristics of the flat layer, the thickness of the flat layer formed is generally Between 1 micron (μm) and 3 μm, if there is a level difference such as metal lines under the flat layer, the flat layer will not be able to achieve a flat effect, and the OLED device still has the problem of uneven light emission.

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