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Display substrate, manufacturing method thereof, display panel and display device

A technology of a display substrate and a manufacturing method, which are applied in the fields of display devices, display substrates and manufacturing methods thereof, and display panels, can solve the problems of the influence of the yield rate of display devices, the large step difference at the via holes of the film layer, etc., so as to avoid the liquid sealing effect, Good film quality, good for continuity and uniformity

Active Publication Date: 2019-03-01
BOE TECH GRP CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a display substrate and its manufacturing method, a display panel, and a display device, which are used to solve the problem that in the existing display devices, the step difference at the via hole of the film layer is relatively large, which easily affects the yield rate of the display device The problem

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  • Display substrate, manufacturing method thereof, display panel and display device
  • Display substrate, manufacturing method thereof, display panel and display device
  • Display substrate, manufacturing method thereof, display panel and display device

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Embodiment Construction

[0039] In order to further explain the display substrate and the manufacturing method thereof, the display panel, and the display device provided by the embodiments of the present invention, a detailed description will be given below in conjunction with the accompanying drawings of the specification.

[0040] As described in the background art, existing display substrates generally include a thicker film layer. When a film layer via is formed in the film layer, such as figure 1 The film vias with a size of a×b shown in the section will have the following problems:

[0041] 1. The size of the produced film via hole is limited.

[0042] 2. The depth of the film layer via hole is large, and other film layers formed in the film layer via hole are prone to breakage or poor film uniformity.

[0043] In more detail, such as figure 2 with image 3 As shown, exemplarily, the display substrate includes: a base substrate 1, and a first insulating layer 2, an active layer 3, a first conductive pa...

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Abstract

The invention discloses a display substrate, a manufacturing method of the display substrate, a display panel and a display device, and relates to the technical field of display, for solving the problem that for the existing display devices, the segment difference at film via holes is relatively large, so that influences are easily caused to the yield of the display devices. The display substratecomprises a function layer, film via holes are arranged in the function layer, each film via hole comprises at least two sub via holes in sequential communicating, along the direction from being far away from a backing substrate of the display substrate to being close to the backing substrate, the diameters of the at least two sub via holes are reduced in sequence, and a step is formed between each two adjacent sub via holes. The display substrate provided by the invention is used for the display panel.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a display substrate, a manufacturing method thereof, a display panel, and a display device. Background technique [0002] At present, in order to ensure the working performance of the display device, a flattening layer for flattening the in-plane step caused by various layer patterns on the substrate is generally made in the display device. However, the thickness of the flattening layer is relatively thick. When making a via hole on the planarization layer, a large step difference will be generated at the via hole, so that when other layers are made on the planarization layer, the other film layers are easily broken at the via hole, affecting the display device The yield rate. Summary of the invention [0003] The purpose of the present invention is to provide a display substrate and a manufacturing method thereof, a display panel, and a display device, which are used to solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/00
CPCG09F9/00
Inventor 陈丽雯王文超徐姗姗唐金波
Owner BOE TECH GRP CO LTD