Flexible Display Module Buffer Layer for Stable Pad Bending
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Solution Overview
Problem
The bending radius of pads in flexible display modules is easily deformed during the pad bending process and subsequent production processes, leading to poor product stability.
Innovation Solution
A display module design featuring a support layer with a buffer layer having a first portion and a second portion of varying rigidity, where the second portion corresponds to the terminal bonding portion, enhancing structural strength and maintaining the bending radius without deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If pad bending is performed to narrow the frame width, then the frame width is reduced, but the bending radius of the pad is easily deformed during the bending process and subsequent production processes
Solution Approach 1:
The buffer layer is designed with non-uniform rigidity distribution, where the second portion corresponding to the terminal bonding portion has greater rigidity than the first portion. This local quality differentiation provides enhanced structural support at the terminal bonding area to maintain bending radius stability during pad bending and subsequent production processes.
Solution Approach 2:
The buffer layer comprises a first portion and a second portion with different rigidity characteristics, forming a composite structure. The first portion has lower rigidity for flexibility, while the second portion has higher rigidity for structural stability, combining the advantages of both material properties to solve the contradiction between frame width reduction and bending radius stability.
2Length of moving object
If the bending radius of the pad is reduced to narrow the frame width, then the frame width is narrowed, but the pad is subjected to large stress causing deformation
Solution Approach 1:
The buffer layer implements local quality enhancement by providing greater rigidity in the second portion corresponding to the terminal bonding portion. This localized structural reinforcement helps the pad withstand large stresses during bending while maintaining overall flexibility for frame width reduction.
Solution Approach 2:
The buffer layer structure is designed in advance to provide structural support and stress distribution before the bending process. The differentiated rigidity configuration pre-establishes a support system that cushions the pad against deformation during subsequent production processes.
Data Source
AI summary
A display module and a display terminal are provided. The display module includes a display panel, a support layer, and a buffer layer, wherein the display panel includes a display portion, a terminal bonding portion, and a bent portion. The support layer is disposed between the display portion and the terminal bonding portion, the buffer layer is disposed on the support layer, the buffer layer includes a first portion and a second portion disposed on a side of the first portion, the second portion corresponds to the terminal bonding portion, and rigidity of the second portion is greater than rigidity of the first portion.