Bonding Device Diaphragm for Display Panel Adhesion
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Solution Overview
Problem
The existing technologies face challenges in preventing bonding failures between display panels and windows in display devices, particularly when bonding curved surfaces and flat surfaces, which can lead to incomplete adhesion and structural integrity issues.
Innovation Solution
A bonding device comprising a support system with a diaphragm that expands pneumatically to securely bond the display panel's bent and flat portions to the window's corresponding surfaces, using a combination of panel supports and fastening units to ensure uniform pressure and adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bonding methods are used to bond display panel and window, then the bonding process is simple, but bonding failures occur between curved surfaces and flat surfaces leading to incomplete adhesion
Solution Approach 1:
The support is divided into a first support portion and a second support portion, with the diaphragm disposed between them. This segmentation allows independent control and adjustment of each support portion, enabling precise adaptation to both curved and flat surfaces during the bonding process, thereby improving bonding reliability without excessive overall complexity.
Solution Approach 2:
The diaphragm is designed to be expandable, transitioning from a collapsed state to an expanded state during bonding. This dynamic capability allows the diaphragm to adapt its shape and pressure distribution to match both curved and flat surfaces, ensuring complete adhesion and preventing bonding failures while maintaining a compact storage form.
2Manufacturing precision
If uniform pressure is applied during bonding of curved and flat surfaces, then adhesion quality improves, but it becomes difficult to accommodate both surface types simultaneously
Solution Approach 1:
The diaphragm provides locally adapted pressure distribution, conforming to the specific geometry of each surface being bonded. When bonding curved portions, the diaphragm expands to match the curvature, and when bonding flat portions, it maintains uniform contact, ensuring high adhesion quality for each local area while accommodating different surface types.
Solution Approach 2:
The diaphragm's physical parameters (volume, pressure, shape) are dynamically changed during the bonding process. By controlling the expansion degree and pressure distribution, the system adapts to different surface geometries, maintaining optimal adhesion quality across both curved and flat surfaces without requiring separate bonding processes.
3Ease of operation
If the diaphragm is disposed on the through-hole, then pneumatic expansion capability is enabled, but the structure becomes more complex
Solution Approach 1:
The through-hole serves multiple functions: it provides pneumatic access for diaphragm expansion, acts as a structural connector between the first and second support portions, and facilitates pressure distribution throughout the diaphragm. This multi-functionality enables pneumatic control capability while minimizing the addition of separate components, thereby limiting the increase in overall structural 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 solution effectively prevents bonding failures by ensuring strong, uniform adhesion between the display panel and the window, enhancing the structural integrity and display quality of the device.
Implementation Method 1
a diaphragm disposed on the first panel support and extending along the first panel support, the diaphragm being disposed between the first panel support and the second panel support
Data Source
AI summary
A bonding device includes a first panel support, a second panel support disposed below the first panel support, a diaphragm disposed on and extending along the first panel support, the diaphragm being disposed between the first panel support and the second panel support, and a window fixing chuck disposed on the diaphragm, the window fixing chuck including a groove facing the diaphragm. A through-hole extends from the second panel support to the first panel support, and the diaphragm is disposed on the through-hole.