Folded Display Substrate Bonding Region for Narrow Bezel Modules
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Solution Overview
Problem
The challenge in flexible display technology is to reduce the volume and space occupied by the flexible display module to enhance the competitiveness of flexible display products, particularly in achieving a narrow bezel design.
Innovation Solution
A display substrate design that includes a bonding region with a first and second bending area, allowing the bonding pin area to be bent towards the display region's back surface, reducing the thickness and volume of the flexible display module by optimizing the space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conducting Pad bending is used to achieve narrow bezel design, then the bezel width is reduced, but the volume and space occupied by the flexible display module increases
Solution Approach 1:
The patent transitions the bonding pin area from a planar arrangement to a three-dimensional folded structure. By introducing first and second bending areas that fold the bonding region toward the display region, the design utilizes the Z-dimension (thickness direction) to relocate bonding pins, thereby reducing their footprint in the X-Y plane and enabling narrow bezel design without increasing overall module volume.
Solution Approach 2:
The bonding pin area is nested within the folded structure by folding the bonding region toward the display region. The first bending area folds the transition connection area and second bending area toward the display region, and the second bending area further folds the bonding pin area toward the display region, creating a nested, space-efficient configuration that minimizes the volume occupied by the flexible display module.
2Volume of moving object
If bonding pin area is folded toward display region, then space utilization is improved, but the structural complexity increases
Solution Approach 1:
The bonding region is segmented into distinct functional areas: transition connection area, first bending area, second bending area, and bonding pin area. This segmentation allows each area to perform its specific function independently while maintaining overall structural integrity, making the complex folded structure manageable and manufacturable.
Solution Approach 2:
The patent employs curved bending areas with controlled radii to achieve the folded configuration. The first bending area and second bending area are designed with specific curvature characteristics that enable smooth folding of the bonding region toward the display region, reducing stress concentrations and facilitating the complex spatial transformation while maintaining structural reliability.
Data Source
AI summary
A display substrate and a display apparatus, the display substrate includes a display region and a bonding region located on a side of the display region, the bonding region includes a first bending area close to the display region, and a transition connection area, a second bending area and a bonding pin area connected sequentially along a direction away from the first bending area, the transition connection area connects the first bending area with the second bending area; the transition connection area, the second bending area and the bonding pin area are bent to a side of the display region facing away from a display side through the first bending area; the bonding pin area is bent toward a surface of the display region facing away from the display side through the second bending area, and the bonding pin area is in bonding connection with an external circuit board.