Flexible Pad Curved Surface Gradient Width Bonding
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Solution Overview
Problem
The existing methods for bonding flexible pads with display panels often result in high bonding pressure due to limited contact surface and width, leading to defects and a shortened service life, increasing the use cost of the flexible pads.
Innovation Solution
A flexible pad design with a contact curved surface and side surfaces that gradually increase in distance from the middle to the sides, featuring uniformly arranged cross sections and pressure-relief vents, which reduces bonding contact pressure and prevents low-pressure areas, thereby enhancing bonding uniformity and extending the service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the flexible pad is profiled through the clip with limited contact curved surface and limited width, then the bonding structure is simplified, but the bonding pressure becomes very high causing defects and shortening service life
Solution Approach 1:
The flexible pad is designed with a curved surface that gradually increases in width from the middle to the two sides, forming a gradient curvature structure. This curved geometry increases the contact area with the display panel during bonding, distributing the bonding pressure more evenly and reducing peak pressure values, thereby preventing bonding defects while maintaining a relatively simple bonding structure.
2Ease of manufacture
If the flexible pad has limited width between third side surface and fourth side surface, then the manufacturing process is simplified, but the bonding contact area is insufficient leading to high pressing amount
Solution Approach 1:
The flexible pad employs a gradient width design where the distance between the third and fourth side surfaces gradually increases from the middle to the two sides. This parameter change creates a progressive expansion of the bonding contact area, allowing sufficient contact surface for effective bonding while maintaining manufacturing simplicity through a continuous gradient structure rather than complex segmented geometry.
3Device complexity
If the flexible pad uses uniform width across the bonding surface, then the structural design is simplified, but pressure distribution becomes uneven creating low-pressure areas and bubbles
Solution Approach 1:
The flexible pad features an asymmetric gradient width profile where the distance between side surfaces varies continuously from the middle to the edges. This asymmetric design creates a pressure distribution gradient that compensates for the natural tendency toward edge effects, ensuring uniform pressure distribution across the bonding surface and preventing bubble formation, while the gradient nature keeps the structural design relatively simple.
Data Source
AI summary
The present disclosure relates to a flexible pad and a display device. The flexible pad includes a bottom surface; a contact curved surface opposite to the bottom surface, wherein the contact curved surface is configured to be bonded with a display panel; a first side surface; a second side surface opposite to the first side surface; a third side surface; and a fourth side surface opposite to the third side surface; wherein a preset connecting line direction between the first side surface and the second side surface is a first direction, and in the first direction, a distance between the third side surface and the fourth side surface gradually increases from a middle to two sides.