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Flexible substrate, flexible display screen and manufacturing method

A flexible substrate and manufacturing method technology, applied in semiconductor/solid-state device manufacturing, instruments, electrical components, etc., can solve the problems of easy peeling of the film layer, extrusion deformation at the bending position, low product performance reliability, etc., to meet the display requirements. effect, improve reliability, and prevent peeling

Pending Publication Date: 2022-01-11
TRULY HUIZHOU SMART DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a flexible substrate, a flexible display screen and a manufacturing method, which effectively solve the problem of the existing flexible display screen being bent, causing internal extrusion deformation at the bending position, easy peeling of the film layer, poor display effect, and product performance reliability. low technical issues

Method used

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  • Flexible substrate, flexible display screen and manufacturing method
  • Flexible substrate, flexible display screen and manufacturing method
  • Flexible substrate, flexible display screen and manufacturing method

Examples

Experimental program
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specific Embodiment 1

[0039] as attached figure 1 As shown, the present invention provides a flexible substrate, which includes a surface layer with functional wiring and a bottom layer without functional wiring. The bottom layer of the flexible substrate includes a bending area 1 and a non-bending area 2. In the bending area The bottom layer is provided with a buffer position, the buffer position has a gap 3, the upper surface of the flexible substrate surface is kept flat, and the length of the bending area is determined according to the thickness of the product and the bending angle. Long bending area, when the display screen is relatively thin, set a shorter bending area; when the angle formed by bending is large, set a shorter bending area; when the angle formed by bending is small, set Longer flex zone. The bending area can be in the display area or in the non-display area; it can be in the binding area or in the non-binding area.

[0040] as attached Figure 6 As shown, the non-functional...

specific Embodiment 2

[0043] as attached figure 2 As shown, the structure different from the specific embodiment 1 lies in the shape of the notch, and the rest of the structure is the same as the specific embodiment 1. In this embodiment, the gap of the buffer position is triangular, and the maximum thickness in the bending area is equal to that of the non-bending area. Thickness, that is, the bottom surface of the bending area and the bottom surface of the non-bending area are on the same horizontal plane, and there are one or more gaps. In this embodiment, the buffer position is composed of a plurality of triangles with the same shape and size arranged end-to-end.

specific Embodiment 3

[0045] as attached image 3 As shown, the structure different from the specific embodiment 1 lies in the shape of the notch, and the rest of the structure is the same as the specific embodiment 1. In this embodiment, the gap of the buffer position is rectangular, and the maximum thickness in the bending area is equal to that of the non-bending area. Thickness, that is, the bottom surface of the bending area and the bottom surface of the non-bending area are on the same horizontal plane, there are one or more gaps, and there is an interval between the gaps. In this embodiment, the buffer position is composed of multiple shapes and sizes. The rectangles and spacers are arranged end to end.

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Abstract

The invention provides a flexible display screen. The flexible display screen comprises a flexible substrate, a bottom plate circuit layer, a light-emitting layer and a packaging layer are sequentially arranged on the surface layer of the flexible substrate, the bottom plate circuit layer is attached to the flexible substrate, the flexible substrate comprises a bending area and a non-bending area, a buffer position is arranged on the bottom layer of the bending area, a notch is formed in the buffer position, and the upper surface of the surface layer of the flexible substrate is kept flat. According to the flexible substrate, the notch is formed in the bending area of the bottom layer of the flexible substrate, the buffer area is arranged for the bending area, the internal space is filled with the material of the bending area, the tension of the outer surface of the flexible substrate is reduced, the stress between the flexible substrate and the film layers and the stress between the film layers are reduced, and stripping of the flexible substrate or the film layers can be prevented; and the upper surface of the surface layer of the flexible substrate is kept flat, the uniformity and accuracy of functional wiring are kept, the electrical property requirement of a device is met, the display effect is met, meanwhile, the bending buffer area is arranged on the bottom layer of the flexible substrate, and the reliability of the bending position can be effectively improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a bendable flexible substrate, a flexible display screen and a manufacturing method. Background technique [0002] With the development of display technology, flexible displays have been gradually commercialized and marketed, and foldable and bendable displays are increasingly used in electronic products. During the bending process of the existing flexible display, due to the stress of different film layers in the bending area and the difference in inner and outer diameters, the material at the bending position will be deformed inward with the external extrusion, which will easily cause the film layer to peel off and damage the display. The circuit function affects the display effect and product reliability. Later, in order to solve the impact of bending on the product, there was a way to fill the bending position with buffer glue. For example, the patent number is "20181078823...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/12H01L27/32H01L21/84G09F9/30G09F9/33
CPCH01L27/1218H01L27/1266G09F9/301G09F9/33H10K59/12H10K59/1201
Inventor 安北燕罗锦钊
Owner TRULY HUIZHOU SMART DISPLAY