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Display back plate, preparation method thereof and display device

A display backplane and lining technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., and can solve problems affecting pixels of display devices, etc.

Pending Publication Date: 2021-02-19
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a display backplane to solve the problem that the pixels of the display device are affected due to the large distance between the source and the drain in the display backplane

Method used

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  • Display back plate, preparation method thereof and display device
  • Display back plate, preparation method thereof and display device
  • Display back plate, preparation method thereof and display device

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] refer to figure 2 , showing a schematic structural view of a display backplane provided by an embodiment of the present invention, including:

[0049] liner 21;

[0050] a source layer 22, the source layer 22 is disposed on the substrate 21;

[0051] a first passivation layer 23, the first passivation layer 23 is disposed on the side of the source layer 22 away from the substrate 21;

[0052] Drain layer 24, the drain layer 24 is arranged on...

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Abstract

The embodiment of the invention provides a display back plate, a preparation method thereof and a display device. The display back plate comprises a lining plate; a source electrode layer arranged onthe lining plate; a first passivation layer arranged on the source electrode layer; a drain electrode layer arranged on the first passivation layer, wherein first grooves are formed in the source electrode layer, the first passivation layer and the drain electrode layer; and the width of the opening of each first groove is larger than that of the bottom of the first groove; and a semiconductor layer which is arranged on the inner wall of each first groove. In the embodiment of the invention, the source electrode layer and the drain electrode layer are arranged on different layers, the first grooves are formed, and the semiconductor layer is arranged on the inner wall of the first grooves and is connected with the source electrode layer and the drain electrode layer, so that the length of the semiconductor layer between the source electrode layer and the drain electrode layer can be ensured to meet the condition that a channel effect does not occur; the aperture opening ratio of the display device can be improved, and then the pixel of the display device is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display backplane, a preparation method thereof, and a display device. Background technique [0002] refer to figure 1 , is a display backplane in the prior art, which includes: a gate layer 11, an insulating layer 12 and a semiconductor layer 13 stacked in sequence; and a drain electrode 14 and a source electrode 15 arranged on both sides of the semiconductor layer 13 , the source 15 and the drain 14 are arranged in the same layer; wherein, the distance between the source 15 and the drain 14 is W1. [0003] Wherein, in the above-mentioned display backplane in the prior art, there will be a channel effect because the distance W1 between the source electrode 15 and the drain electrode 14 is too small, and when the distance W1 is large, the display device including the display backplane will The aperture ratio is smaller, which in turn makes the pixels of the display device lo...

Claims

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Application Information

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IPC IPC(8): H01L27/12H01L21/77
CPCH01L27/1222H01L27/1248H01L27/127
Inventor 王利忠周天民
Owner BOE TECH GRP CO LTD
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