Folded Display Module Lamination for Narrow Bezel Compression Resistance
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Solution Overview
Problem
Conventional terminal bending processes for display modules to achieve a narrow bezel effect result in excessive thinning of the buffer layer, leading to decreased compression resistance and visible prints on the adhesive layer, affecting the appearance of the display module.
Innovation Solution
A display module design with a substrate, support layers, and adhesive layers arranged to increase the lamination area, ensuring the distance from the end of the adhesive layer to the non-display region is greater than or equal to the distance from the end of the buffer layer, and using pressure-sensitive adhesive materials to enhance adhesion and reduce pressure during lamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the buffer layer is excessively thinned to achieve a narrow bezel effect, then the bezel width is reduced, but the compression resistance of the buffer layer decreases and visible prints appear on the adhesive layer
Solution Approach 1:
The patent extends the adhesive layer in the longitudinal direction (along the bending section) to compensate for the reduced thickness of the buffer layer in the thickness direction. This dimensional compensation ensures sufficient bonding area and compression resistance even when the buffer layer is thinned to achieve a narrow bezel.
Solution Approach 2:
The patent changes the spatial parameters of the adhesive layer by extending it along the bending section to cover a longer distance. This parameter adjustment (increasing length while maintaining or reducing thickness) compensates for the reduced compression resistance caused by buffer layer thinning.
2Length of stationary object
If the buffer layer thickness is reduced to achieve a narrow bezel effect, then the display module becomes thinner, but the compression resistance decreases leading to visible prints on the adhesive layer
Solution Approach 1:
The patent compensates for the reduced buffer layer thickness by extending the adhesive layer in the longitudinal direction along the bending section. This dimensional compensation ensures sufficient bonding area and compression resistance even when the buffer layer is thinned to achieve a thinner display module.
Solution Approach 2:
The patent adjusts the spatial parameters of the adhesive layer by increasing its length along the bending section to compensate for the reduced thickness of the buffer layer, thereby maintaining compression resistance and preventing visible prints.
3Strength
If the adhesive layer is extended along the bending section to increase lamination area, then compression resistance is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the adhesive layer with the support layer structure by forming the adhesive layer on the support layer and extending it along the bending section. This integration ensures the adhesive layer is positioned correctly and maintains structural coherence, reducing manufacturing complexity despite the extended configuration.
Solution Approach 2:
The patent forms the adhesive layer on the support layer before the final assembly steps, preliminarily establishing the extended adhesive structure. This preliminary action simplifies subsequent manufacturing steps by pre-positioning the adhesive layer correctly along the bending section.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively increases the lamination area, reducing pressure and preventing visible prints on the adhesive layer, thereby improving the appearance yield of the display module.
Implementation Method 1
using pressure-sensitive adhesive materials to enhance adhesion and reduce pressure during lamination
Data Source
AI summary
A display module, a manufacturing method thereof and a display apparatus are provided. The display module includes a substrate, a display function layer, a support layer, a buffer layer and a first adhesive layer, wherein the substrate includes a display section and an extending section that are arranged oppositely, and a bending section that is bent to connect the display section and the extending section and is located in the non-display region. A distance from an end of the first adhesive layer away from the non-display region to the non-display region is greater than or equal to a distance from an end of the buffer layer away from the non-display region to the non-display region.