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Display panel, preparation method thereof and display device

A display panel and substrate technology, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as unevenness of the light-emitting layer, height difference, color shift, etc., to improve height uniformity, improve flatness, and avoid color shift problems Effect

Pending Publication Date: 2021-10-22
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a display panel, a preparation method thereof, and a display device, so as to solve the problem that the height difference of the existing display screen due to the wiring in the pixel driving substrate leads to the unevenness of the subsequently prepared light-emitting layer and the occurrence of color shift question

Method used

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  • Display panel, preparation method thereof and display device
  • Display panel, preparation method thereof and display device
  • Display panel, preparation method thereof and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 2 shows a cross-sectional view of a display panel according to Embodiment 1 of the present invention, image 3 shows a cross-sectional view of another display panel according to Embodiment 1 of the present invention, Figure 4 A top view of a display panel according to Embodiment 1 of the present invention is shown. refer to figure 2 and image 3 , the display panel may include a substrate 10, a first insulating layer 20 covering the substrate 10, a wiring layer 30 disposed on the first insulating layer 20, and a second insulating layer covering the wiring layer 30 40, and an anode layer 50 disposed on the second insulating layer 40, the substrate 10 includes a substrate 11, and the display panel includes a pixel opening area A for setting a light emitting device;

[0056] Among them, refer to figure 2 , the wiring layer 30 includes a first wiring portion 31, the orthographic projection of the first wiring portion 31 on the substrate 11 and the orthographic...

Embodiment approach

[0078] For the above first specific implementation manner, since the existing design of the thickness of the first insulating layer can be maintained, there is little change in the manufacturing process of the display panel, which is beneficial to practical use.

[0079] In another optional specific implementation manner, the depth of the groove 21 can also be designed first, and then the thickness of the first insulating layer 20 can be designed to ensure that there will be no defect between the first wiring part 31 and the lower electrode. parasitic capacitance. In this embodiment, the thickness of the first insulating layer 20 can be set thicker than that of the prior art. Specifically, first, the depth of the groove 21 can be designed between 1 / 3-3 / 2 of the thickness of the first wiring part 31, and then the thickness of the first insulating layer 20 between the bottom surface of the groove 21 and the substrate 10 can be designed The thickness is greater than or equal to ...

Embodiment 2

[0088] Figure 5 shows a flow chart of the steps of a method for manufacturing a display panel according to Embodiment 2 of the present invention, Figure 6 A flow chart showing the steps of another method for manufacturing a display panel according to Embodiment 2 of the present invention, refer to Figure 5and Figure 6 , the preparation method comprises the following steps:

[0089] Step 501 : preparing a substrate 10 ; the substrate 10 includes a substrate 11 .

[0090] Optionally, this step may specifically include:

[0091] providing a substrate 11;

[0092] forming a buffer layer 12 on the substrate 11;

[0093] forming an active layer 13 on the buffer layer 12;

[0094] forming a first gate insulating layer 14 covering the active layer 13;

[0095] forming a first gate electrode layer 15 on the first gate insulating layer 14;

[0096] forming a second gate insulating layer 16 covering the first gate electrode layer 15;

[0097] A second gate electrode layer 17...

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Abstract

The invention provides a display panel, a preparation method thereof and a display device, which relate to the technical field of display. A wiring layer of the display panel comprises a first wiring part, the orthographic projection of the first wiring part on a substrate is overlapped with the orthographic projection of a pixel opening area on the substrate, a groove is formed in a first insulating layer, the first wiring part is arranged in the groove, and the height uniformity of the pixel opening area is improved. Or, the wiring layer comprises a second wiring part, the orthographic projection of the second wiring part on the substrate and the orthographic projection of the pixel opening area on the substrate are not overlapped, the third wiring part and the anode layer are arranged on the same layer, and the third wiring part is used as a lap-joint wiring to be connected with a via hole of the second wiring part. While signal conduction is realized, the height uniformity of the pixel opening area is improved. Therefore, when the light-emitting layer material of the light-emitting device is evaporated subsequently, the flatness of the bottom of the light-emitting material is improved, and the color cast problem of the display device is avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] At present, high-resolution and high-quality display products are developing rapidly, and there are many technical problems that follow. Among them, the problem of color shift caused by the film layer difference of the display panel below the light-emitting device is a common problem at present. [0003] Below the light emitting device is the pixel driving substrate, and the flatness of the pixel driving substrate will directly affect the flatness of the light emitting device, especially the flatness of the light emitting layer. At present, the part of the pixel driving substrate corresponding to the pixel opening area contains traces, and the height difference generated by the traces makes the subsequent preparation of the light-emitting layer uneven, which eventually leads to t...

Claims

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Application Information

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IPC IPC(8): H01L27/32
CPCH10K59/124H10K59/12H10K59/131H10K59/1201
Inventor 包征张家祥王明强王康杨皓天刘皓瑜罗淼郝晓东左堃张燚傅晓亮张斌
Owner BOE TECH GRP CO LTD
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