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Display substrate, manufacturing method thereof, and display device

A technology for displaying substrates and manufacturing methods, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as packaging film cracks, reducing packaging film reliability, and packaging film failure, so as to avoid failure and improve reliability The effect of ensuring the uniformity of film thickness

Active Publication Date: 2021-10-22
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the setting of the isolation structure makes the film layer of the packaging film around the isolation structure thinner. At the same time, the packaging film produces a stress concentration area around the isolation structure. In the stress concentration area, the packaging film is prone to cracks, which eventually leads to the packaging film. failure, reducing the reliability of the encapsulation film in the area around the mounting hole

Method used

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

Examples

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no. 1 example

[0067] The first embodiment of the present invention exhibits a method of fabricating a substrate, the display substrate including a display area, and an open hole region is provided, and the production method includes:

[0068] S1: Preparation of array structural layers;

[0069] S2: A isolation structure disposed around the open cell region is formed on the surface of the array structure layer, the separator structure having a first side wall having a slope angle of no greater than 90 °;

[0070] S3: Forming a stress concentration region for contact with the first side wall and for eliminating inorganic films formed thereon.

[0071] In the present embodiment, prior to S3, further includes forming a pixel definition layer and a light-emitting structure layer; after S3, a first inorganic film forming the filler structure and the isolation structure is further included.

[0072] The method of displaying the substrate is described in detail with the top gate TFT as an example.

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no. 2 example

[0095] The second embodiment of the present invention exhibits a method of fabricating a substrate, the display substrate including a display area, and an open hole region is provided, and the production method includes:

[0096] S1: Preparation of array structural layers;

[0097] S2: A isolation structure disposed around the open cell region is formed on the surface of the array structure layer, the separator structure having a first side wall having a slope angle of no greater than 90 °;

[0098] S3: Forming a stress concentration region for contact with the first side wall and for eliminating inorganic films formed thereon.

[0099] In this embodiment, before S3, it is also included to form a pixel definite layer, a light-emitting structure layer, and a first inorganic film forming the isolation structure; in S3, an organic formed in a region outside the isolation structure is formed. The protective layer; after S3, it is also included to form a second inorganic film that cove...

no. 3 example

[0116] A third embodiment of the present invention provides a display substrate, such as figure 1 with Figure 12 As shown, the display substrate includes a display area, and an open hole region 100 is provided, and an effective display area 200 located outside the opening region 100, the display substrate comprising:

[0117] Array structure layer;

[0118] The isolation structure provided on the surface of the array structure layer and is disposed around the open hole region, the separator structure having a first side wall having a slope angle of no greater than 90 °;

[0119] Contact with the first side wall and is used to eliminate the filling structure 70 of the stress concentrated region of the inorganic film formed thereon.

[0120] Among them, the slope angle of the side wall for carrying the inorganic film is not less than 90 °.

[0121] Wherein, the array structure layer includes a substrate 10, a thin film transistor 20 disposed on the substrate 10, a flat layer 30 dispos...

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Abstract

The invention discloses a display substrate, a manufacturing method thereof, and a display device. The display substrate includes a display area, and an opening area is arranged in the display area. The manufacturing method includes: preparing an array structure layer; forming at least one isolation structure surrounding the opening area on the surface of the array structure layer, and The isolation structure has a first side wall with a slope angle not greater than 90°; a filling structure is formed that is in contact with the first side wall and used to eliminate the stress concentration area of ​​the inorganic thin film formed thereon. The filling structure replaces the isolation structure to carry the inorganic film. The filling structure can eliminate the stress concentration area of ​​the inorganic film formed on it, thereby avoiding the formation of the stress concentration area of ​​the inorganic film, avoiding the failure of the packaging film, and improving the opening of the packaging film. Reliability around the area.

Description

Technical field [0001] The present invention relates to the field of display, and more particularly to a display substrate and a method of fabricating a display device. Background technique [0002] In recent years, organic Light Emitting Diode, OLEDs have become a very popular emerging flat display product at home and abroad, because the OLED display device has self-illuminating, wide viewing angle, short reaction time, high light emitting efficiency, a wide range of color domains, Low operating voltages, panel thin, can make large-sized and flexible panels and procedures simple features, and it also has low cost potential. [0003] The flexible OLED display device can be folded or crushed like a paper, fold the flexible display device edge, and the narrow border display, or even border display, improve the display device screen for accounting. When a narrow border or a border display is applied to a mobile terminal product, there is a need to open the mounting hole in the displ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L21/77
CPCH10K59/1201H10K71/00H10K59/873H01L21/77H10K59/123H10K59/1213Y02E10/549H10K50/844H10K59/12
Inventor 王有为张嵩蔡鹏
Owner BOE TECH GRP CO LTD