Rectangular Dam Alignment for Display Substrate Bonding
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Solution Overview
Problem
The existing methods for bonding a display device, particularly connecting a cover or frame to a display substrate, face challenges with alignment accuracy and even distribution of bonding material due to the use of curved surfaces and dams, leading to errors and inefficiencies.
Innovation Solution
A display arrangement featuring a flat display substrate with a rectangular dam that aligns congruently with the substrate's circumference, allowing for precise positioning and even bonding material distribution, with the dam forming a supportive surface such as a gable roof, dome, or step shape, and optionally integrated with the cover, ensuring no lateral distance and complete contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a curved surface is used for the cover and a dam is used to contain bonding material, then the bonding material can be distributed, but alignment accuracy deteriorates and positioning errors occur
Solution Approach 1:
Instead of placing the dam on the curved cover surface and positioning the flat substrate on top (which causes alignment errors), the invention inverts the approach by placing the flat substrate first and then positioning the dam with its flat side against the substrate. This reversal eliminates the alignment problem between curved and flat surfaces.
Solution Approach 2:
The flat side of the dam is pre-formed during the molding process of the cover, creating a ready-to-use positioning surface before the bonding process begins. This preliminary preparation ensures accurate alignment when the substrate is placed against the dam's flat side.
2Manufacturing precision
If a dam is used to contain bonding material on a curved surface, then bonding material distribution is possible, but uniform distribution deteriorates due to curved surface geometry
Solution Approach 1:
The dam is designed with different geometries for different functions: a flat side for uniform bonding material distribution against the flat substrate, and a curved outer surface to match the cover's curvature. This local differentiation of geometry solves the uniformity problem while maintaining aesthetic integration.
Solution Approach 2:
By inverting the placement sequence and using the flat side of the dam against the flat substrate rather than placing the dam on the curved surface, the invention achieves uniform bonding material distribution despite the overall curved geometry of the cover assembly.
3Manufacturing precision
If lateral distance is maintained between substrate and dam, then positioning flexibility is provided, but bonding completeness deteriorates due to gaps
Solution Approach 1:
The invention inverts the traditional approach by having the dam's flat side contact the substrate directly rather than maintaining lateral distance. This ensures complete bonding contact while the pre-formed flat side provides sufficient positioning guidance without requiring operational flexibility.
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 enhances alignment accuracy and ensures uniform bonding material distribution, improving the bonding process by eliminating lateral gaps and ensuring complete contact between the substrate and the dam, thus enhancing the structural integrity and assembly precision of the display device.
Implementation Method 1
a bonding material or connecting material with which the display substrate (4) is to be bonded to the cover (6)
Data Source
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AI summary
The invention relates to a display arrangement (1) with a substantially rectangular and flat display substrate (4) and a cover (6) with a connection area to which the display substrate (4) is adhesively attached by a bonding material (8) or a connecting material (8), and a rectangular dam (12) containing a bonding material, wherein the display substrate (4) is viewed in a projection with its side edges (11) on the dam (12) in a plane parallel to the display substrate (4), and is positioned along its circumference congruently with the edge of the rectangular dam (12), so that no lateral distance to the dam (12) is formed on any side, but rather a congruent superposition of the circumference of the display substrate (4) with the dam (12) is given.