Partial Glass Edge Encapsulation to Prevent Warping
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Solution Overview
Problem
Existing glass encapsulation assemblies suffer from warping and deformation due to shrinkage and deformation of the hard encapsulation, leading to quality issues in extreme environments.
Innovation Solution
A glass encapsulation assembly design where the hard encapsulation only partially wraps the periphery of the glass substrate, with snap-fit portions such as grooves or protrusions to prevent separation and enhance bonding, reducing material consumption and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hard encapsulation wraps the entire periphery of the glass substrate, then the bonding strength between encapsulation and glass is improved, but the glass substrate experiences warping and deformation due to shrinkage
Solution Approach 1:
The periphery of the glass substrate is divided into a wrapped portion and an exposed portion. The hard encapsulation wraps only the wrapped portion (e.g., three sides or specific edges) rather than the entire periphery, segmenting the bonding interface to reduce overall shrinkage stress while maintaining localized bonding strength through snap-fit portions.
Solution Approach 2:
Snap-fit portions (grooves or protrusions) are strategically positioned at specific locations such as corners or along edges of the wrapped portion. These localized structural features concentrate bonding strength at critical positions without requiring full periphery wrapping, thereby preventing warping while ensuring firm bonding where most needed.
2Strength
If the hard encapsulation wraps the entire periphery of the glass substrate, then the bonding strength is improved, but the consumption of raw materials increases
Solution Approach 1:
The encapsulation structure is segmented to wrap only the necessary portion of the glass periphery rather than the entire circumference. This reduces the volume of hard encapsulation material required while maintaining adequate bonding through strategic placement of snap-fit portions at critical locations.
Solution Approach 2:
Instead of fully wrapping the entire periphery (excessive action), the hard encapsulation applies partial wrapping coverage. This partial action is sufficient to achieve the required bonding strength when combined with snap-fit portions, thereby reducing material consumption without compromising performance.
3Strength
If the hard encapsulation wraps the entire periphery of the glass substrate, then the bonding strength is improved, but the cost increases
Solution Approach 1:
The encapsulation design segments the wrapped portion from the exposed portion, reducing the total amount of hard encapsulation material needed. This directly lowers material costs while the snap-fit portions ensure adequate bonding strength is maintained at critical positions.
Solution Approach 2:
By concentrating snap-fit portions at specific strategic locations rather than distributing bonding features uniformly around the entire periphery, the design achieves firm bonding where most critical while minimizing overall material usage and manufacturing cost.
Data Source
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AI summary
A glass encapsulation assembly, including a glass substrate and a first encapsulation. The glass substrate has a periphery, a portion of which is wrapped by the first encapsulation to form a wrapped edge, and the other portion of which is exposed outside the first encapsulation to form an exposed edge. The wrapped edge is provided with at least one snap-fit portion, which is snap-fitted with the first encapsulation to prevent the first encapsulation from being separated from the wrapped edge. The present disclosure can solve the problem of warping and deformation of glass caused by shrinkage deformation of the encapsulation.