Flexible Circuit Board Bending Apparatus with Curved Adhesion Member
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Solution Overview
Problem
Existing display devices face challenges in bending flexible circuit boards while minimizing the load on them, which is crucial for forming curved substrates and maintaining mechanical stability in display devices.
Innovation Solution
A flexible substrate with a main region, a bending region, and a sub-region, where the thickness is greater in the bending region than in the main and sub-regions, is used, along with an apparatus featuring a stage, adhesion member, and bending member to bend the flexible circuit board, minimizing the load by firmly adhering the substrate to a protective member with a curved part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible circuit board is bent to form a curved substrate, then the adaptability for multi-faceted displays is improved, but the mechanical stress and potential damage to the circuit board increase
Solution Approach 1:
The flexible substrate is designed with non-uniform thickness, where the bending region has a greater thickness than the main region and sub-region. This local quality variation allows the substrate to better withstand bending stresses while maintaining the required curvature for multi-faceted displays, thus improving reliability during the bending process.
Solution Approach 2:
An adhesion member is introduced between the flexible circuit board and the bending member to minimize direct contact and reduce mechanical stress. The adhesion member acts as a cushioning layer that protects the flexible circuit board from excessive load during bending, thereby maintaining its mechanical stability and reliability.
2Strength
If the thickness of the flexible substrate is increased in the bending region, then the mechanical strength is improved, but the overall flexibility and ease of bending is reduced
Solution Approach 1:
The flexible substrate features a non-uniform thickness distribution where only the bending region has increased thickness compared to the main region and sub-region. This localized thickening provides the necessary mechanical strength precisely where bending occurs, while the thinner main region maintains overall flexibility and ease of operation.
3Reliability
If an adhesion member is introduced to minimize load on the flexible circuit board, then the mechanical stability is improved, but the device complexity increases
Solution Approach 1:
An adhesion member is introduced as an intermediary component between the flexible circuit board and the bending member. This mediator minimizes direct mechanical contact and reduces the load on the flexible circuit board during bending, thereby improving mechanical stability. The adhesion member is integrated into the existing apparatus structure, minimizing the increase in overall device complexity.
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
This approach allows for the successful bending of flexible circuit boards with reduced load, enhancing the mechanical stability and curvature of display devices, enabling the formation of multi-faceted stereoscopic displays.
Implementation Method 1
firmly adhering the target substrate to the protective member with an adhesion member
Data Source
AI summary
An apparatus for manufacturing a display device includes a stage, an adhesion member disposed above the stage and including a body part and a curved part, and an adhesion driver to rotate and drive the adhesion member, wherein the curved part is disposed on one side of the body part and is bent to have curvature.