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A flexible display device and preparation method thereof

A flexible display device and flexible technology, applied in the direction of final product manufacturing, climate sustainability, sustainable manufacturing/processing, etc., can solve the problems of reducing the overall bending deformation of the screen, increasing the bending strength of the screen, and poor film formation , to achieve improved reliability and use effect, good flexible bending effect, and improved bending resistance

Active Publication Date: 2020-02-28
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the flexible display prepared by the above method, since the inorganic barrier layer is a rigid film, the elastic modulus is small, and the bending deformation is small, so it is difficult to achieve a small bending radius
This leads to an increase in the bending strength of the entire screen and reduces the overall bending deformation of the screen
At the same time, because the barrier layer is usually an inorganic material, the film-forming property is poor, and it is easy to form defects such as pinholes and cracks. When the screen body is bent, the defect area is easy to induce cracks and even cause the film to break, which in turn affects the reliability of the package. The effect of the display

Method used

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  • A flexible display device and preparation method thereof
  • A flexible display device and preparation method thereof
  • A flexible display device and preparation method thereof

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Embodiment 1

[0052] This embodiment provides a method for preparing a flexible display device, such as Figure 2-8 shown, including the following steps:

[0053] Step S11 , dividing the flexible substrate 1 into a pixel area 101 and a non-pixel area 102 .

[0054] Specifically, such as Figure 3-4 As shown, the flexible substrate 1 can be divided into a stacked two-layer structure, and a plurality of grooves 103 are formed on the upper flexible substrate 1 through a patterning process, and the region of the groove 103 is the pixel region 101, and the rest of the region is the non-pixel region. District 102. On the one hand, the recognition degree of the pixel area 101 and the non-pixel area 102 is improved, which is conducive to accurately distinguishing the pixel area 101 and the non-pixel area 102 during the preparation process, improving the preparation accuracy and reducing the difficulty of preparation; on the other hand, thinning The overall thickness of the display device is redu...

Embodiment 2

[0079] This embodiment provides a flexible display device prepared according to the preparation method in Embodiment 1, such as Figure 3-8 As shown, it includes a flexible substrate 1, a rigid buffer layer 2, a driving circuit layer 3, a flexible first isolation layer 4, a connection layer 5, a flexible second isolation layer 6, a light emitting device layer 8, a rigid packaging layer 9 and a flexible cover plate 10 .

[0080] The flexible substrate 1 is divided into a pixel area 101 and a non-pixel area 102 , and the rigid buffer layer 2 and the driving circuit layer 3 are sequentially stacked in the pixel area 101 of the flexible substrate 1 . The rigid buffer layer 2 can be an inorganic non-metallic material layer, generally, materials such as silicon nitride and silicon oxide can be used.

[0081] The flexible first isolation layer 4 is formed on the driving circuit layer 3 and covers the pixel area 101 and the non-pixel area 102 at the same time.

[0082] The connectio...

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Abstract

The invention relates to the field of display technology, and discloses a method for preparing a flexible display device comprising: dividing a flexible substrate into a pixel area and a non-pixel area; sequentially forming a stacked rigid buffer layer and a driving circuit layer in the pixel area; A flexible first isolation layer that covers both the pixel area and the non-pixel area is formed on the layer; a connection layer is formed on the first isolation layer; a flexible second isolation layer that only covers the non-pixel area is formed on the connection layer; In the pixel area, stacked light-emitting device layers and rigid encapsulation layers are sequentially formed; a flexible cover plate is formed. In the preparation method of the flexible display device provided by the present invention, the rigid buffer layer and the driving circuit layer are only formed in the pixel area, and only the flexible first isolation layer, the connection layer and the flexible second isolation layer are formed in the non-pixel area, and the stress is mainly concentrated in In the non-pixel area, the flexible bending effect is better, and the characteristics of the device are not changed due to bending, which improves the reliability and use effect of the flexible display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible display device and a preparation method thereof. Background technique [0002] At present, the successful mass production of flexible displays is not only beneficial to the new generation of high-end smartphone industry, but also has a profound impact on the application of wearable devices due to its low power consumption and bendable characteristics. And in the future development, flexible screens will be widely used with the continuous penetration of personal smart terminals. [0003] Organic light-emitting functional materials for flexible displays are very sensitive to water and oxygen. Therefore, packaging technology is one of the key technologies for flexible displays. Existing methods for preparing flexible displays such as figure 1 As shown, it mainly includes the following steps: first prepare a layer of inorganic barrier layer 2' on the flexible substrate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H01L51/00H01L27/32H10K99/00
CPCH10K59/12H10K77/111H10K71/00Y02E10/549Y02P70/50
Inventor 周茂清张庆超
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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