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Electroluminescent device, manufacturing method of electroluminescent device, display substrate and display device

A technology for electroluminescent devices and manufacturing methods, applied in semiconductor/solid-state device manufacturing, electric solid-state devices, electrical components, etc., can solve problems such as inconsistent thickness of electroluminescent layers, achieve the effect of improving performance and ensuring uniformity

Active Publication Date: 2015-01-21
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides an electroluminescent device and its manufacturing method, a display substrate and a display device to solve the problem of inconsistent thicknesses of electroluminescent layers of the same color in the prior art

Method used

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  • Electroluminescent device, manufacturing method of electroluminescent device, display substrate and display device
  • Electroluminescent device, manufacturing method of electroluminescent device, display substrate and display device
  • Electroluminescent device, manufacturing method of electroluminescent device, display substrate and display device

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Embodiment 1

[0072] Figure 4 The flow chart of the manufacturing method of the electroluminescent device provided by Embodiment 1 of the present invention, such as Figure 4 shown, including:

[0073] Step 101: Form a pixel defining layer above the substrate, the pixel defining layer encloses a matrix of pixel openings, and at least one connecting channel is formed on the pixel defining layer, and the connecting channel is used to connect pixels in the same row or column in the matrix of openings And corresponding to at least two pixel openings of the electroluminescent layer of the same color.

[0074] Optionally, step 101 includes:

[0075] Step 1011: forming a pixel defining layer substrate on the substrate;

[0076] Step 1012: Patterning the pixel defining layer substrate to form a matrix of pixel openings and connection channels.

[0077] Figure 5a It is a schematic structural diagram of the pixel defining layer in Embodiment 1 of the present invention, as shown in Figure 5a ...

Embodiment 2

[0094] The electroluminescent device prepared in this embodiment includes electroluminescent layers of three colors, that is, the predetermined colors include: a first color, a second color and a third color.

[0095] Image 6 The flow chart of the manufacturing method of the electroluminescent device provided for the second embodiment of the present invention, such as Image 6 shown, including:

[0096] Step 201: forming a pixel defining layer above the substrate, the pixel defining layer is surrounded by a matrix of pixel openings, at least one horizontally arranged connecting channel is formed on the pixel defining layer, and a row of pixel openings corresponds to two horizontally arranged connecting channels, Two laterally arranged connection channels are respectively located on both sides of the corresponding row of pixel openings, one connection channel is connected to at least two pixel openings in the same row and corresponding to the electroluminescent layer of the f...

Embodiment 3

[0121]The electroluminescent device prepared in this embodiment includes electroluminescent layers of three colors, that is, the predetermined colors include: a first color, a second color and a third color.

[0122] Figure 9 The flowchart of the manufacturing method of the electroluminescent device provided for the third embodiment of the present invention, such as Figure 9 shown, including:

[0123] Step 301: forming a pixel defining layer above the substrate, the pixel defining layer is surrounded by a matrix of pixel openings, at least one vertical connection channel is formed on the pixel defining layer, and a row of pixel openings corresponds to two vertical connection channels, Two vertical connection channels are respectively located on both sides of the pixel opening in the corresponding column, one connection channel is connected to at least two pixel openings in the same column and corresponding to the electroluminescent layer of the first color, and the other co...

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Abstract

The invention discloses an electroluminescent device, a manufacturing method of the electroluminescent device, a display substrate and a display device. The electroluminescent device comprises the substrate and a pixel definition layer which defines a pixel opening matrix. At least one connection channel is formed in the pixel definition layer. An electroluminescent layer with a preset color is formed in each pixel opening in the pixel opening matrix. At least two pixel openings which are located in the same row or column of the pixel opening matrix and correspond to the electroluminescent layers with the same color are connected through the connection channels. According to the technical scheme, the connection channels are formed in the pixel definition layer, so that when electroluminescent material solution is instilled into the pixel openings, the storage amounts of the electroluminescent material solution in the pixel openings which are located in the same row or column and correspond to the electroluminescent layers with the same color are the same, the thicknesses of the electroluminescent layers formed after drying are the same, and then the light emitting evenness of the electroluminescent device is guaranteed, and the performance of the electroluminescent device is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an electroluminescent device and a manufacturing method thereof, a display substrate and a display device. Background technique [0002] In recent years, in the field of electroluminescence, when the coating of electroluminescent materials is realized by inkjet method, in order to limit the coating area and prevent the solution of electroluminescent materials from flowing into adjacent pixels, it is necessary to A pixel defining layer is formed in a luminescent device. [0003] figure 1 is a cross-sectional view of an electroluminescent device in the prior art, figure 2 for figure 1 top view of image 3 It is a schematic diagram of the structure of the pixel definition layer in the prior art, such as Figure 1 to Figure 3 As shown, the electroluminescent device includes: a substrate 1 and a pixel defining layer 2 formed on the substrate 1, and a pixel opening matrix is ​​f...

Claims

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Application Information

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IPC IPC(8): H01L27/02H01L21/77
CPCH10K59/35H10K59/122H10K59/173H10K71/135H10K50/11H10K59/1201H10K71/00H01L21/77
Inventor 井口真介廖金龙高雪
Owner BOE TECH GRP CO LTD
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