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Display substrate, display device and manufacturing method thereof

A display substrate and manufacturing method technology, applied in identification devices, organic semiconductor devices, instruments, etc., can solve problems such as box thickness, light leakage, and affecting display effects

Pending Publication Date: 2020-08-25
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiments of the present invention provide a display substrate, a display device and a manufacturing method, the main purpose of which is to solve the problem that when quantum dots are applied in a flexible OLED display device, the conventional cell alignment method is likely to cause large cell thickness and light leakage. Problems that affect the display effect

Method used

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

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Embodiment 1

[0041] Reference attached figure 1 , the display substrate provided by the embodiment of the present invention, which includes a TFT substrate 1, a pixel defining layer 2, an electroluminescent device layer 3, a connection layer 4, a first encapsulation layer 5, and a quantum dot layer 6; the pixel defining layer 2 is set On the TFT substrate 1, and surround several pixel pits 21;

[0042] Each of the pixel pits 21 is sequentially stacked with an electroluminescent device layer 3, a connection layer 4, a first encapsulation layer 5, and a quantum dot layer 6, and the connection layer 4 in the adjacent pixel pit 21 is The side of the pixel defining layer 2 that is away from the TFT substrate 1 is in contact with each other, and is used for electrically connecting the electroluminescent device layers 3 in two adjacent pixel pits 21 .

[0043] Specifically, in order to solve the problem that when quantum dots are applied in flexible OLED display devices, the conventional box-ali...

Embodiment 2

[0063] Further, an embodiment of the present invention provides a display device, which includes the display substrate described in the above embodiments.

[0064] It can be understood that, the display substrate in this embodiment can directly use the display substrate described in Embodiment 1, and its detailed structure can refer to the content of the above embodiment.

Embodiment 3

[0066] Reference attached Figure 4 , an embodiment of the present invention provides a method for manufacturing a display substrate based on Embodiment 1, which includes the following steps:

[0067] 101. Making a TFT substrate 1;

[0068] Specifically, it is not difficult for those skilled in the art to fabricate a thin film transistor (TFT) circuit on a base substrate according to the conventional technology, so details will not be repeated here.

[0069] 102. Fabricate a pixel defining layer 2 on the TFT substrate 1, and surround several pixel pits 21;

[0070] Specifically, a directional thermal expansion material is selected as the pixel defining layer 2, and the pixel defining layer 2 is fabricated on the TFT substrate 1 by inkjet printing, and several pixel pits 21 are formed.

[0071] 103. Arranging an electroluminescent device layer 3 on the side of the pixel defining layer 2 away from the TFT substrate 1;

[0072] Specifically, the electroluminescent device layer...

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Abstract

The invention discloses a display substrate, a display device and a manufacturing method thereof, and relates to the technical field of the display. In order to solve the problem that when quantum dots are applied to a flexible OLED display device, the display effect is affected by large box thickness, light leakage and the like easily caused by a conventional box aligning mode, the main technicalscheme is that the display substrate comprises a TFT substrate, a pixel defining layer, electroluminescent device layers, connecting layers, first packaging layers and quantum dot layers, wherein thepixel defining layer is arranged on the TFT substrate and defines a plurality of pixel pits, an electroluminescent device layer, a connecting layer, a first packaging layer and a quantum dot layer are sequentially stacked in each pixel pit, and the connecting layers in the adjacent pixel pits are connected at one side, deviating from the TFT substrate, of the pixel defining layer and are used forelectrically connecting the electroluminescent device layers in the two adjacent pixel pits. According to the display substrate, the integrated arrangement of the display substrate is achieved, box alignment and gluing are not needed, and the problems of surface light leakage and uneven brightness are avoided.

Description

technical field [0001] The present invention relates to the technical field of display devices, in particular to a display substrate, a display device and a manufacturing method. Background technique [0002] With the advancement of display technology, flexible OLED display products have been rapidly applied and promoted, and quantum dots (Quantum Dots, QDs) have also been applied to flexible display products due to their light-emitting characteristics; the current quantum dot display structures are all made by using Two substrates are boxed together. One of the substrates is provided with traditional TFT and EL structures, and the other substrate is provided with a quantum dot color film. Then, the two substrates are boxed together by colloidal bonding to finally form a quantum dot display. structure. [0003] However, the method of aligning the box requires high precision of the box, and the thickness of the box is large, which is likely to cause poor display problems suc...

Claims

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Application Information

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IPC IPC(8): H01L27/32G09F9/30
CPCG09F9/301H10K59/122H10K59/1201H10K2102/331H10K59/38H10K50/828H10K71/00
Inventor 王琳琳
Owner BOE TECH GRP CO LTD
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