Rectangular Dam Display Bonding Alignment
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Solution Overview
Problem
Existing bonding methods for displays with curved surfaces face challenges in precise alignment and even distribution of bonding material, leading to errors and inefficiencies.
Innovation Solution
A display arrangement where the flat display substrate is bonded to a cover with a rectangular dam containing bonding material, with the substrate resting along its circumference against the dam's edges, and optionally using spacers with spring elements to ensure proper alignment and pressure, enhancing the bonding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bonding material is applied to the curved surface of the cover to adhere the cover to the flat display substrate, then the cover can be bonded to the display substrate, but alignment errors occur and the process becomes problematic
Solution Approach 1:
The invention divides the bonding system into distinct functional elements: a dam structure that segments the bonding material into a controlled region, and a display substrate that bears directly against the dam edges. This segmentation eliminates the need for precise alignment by creating physical boundaries that contain the bonding material, resolving the contradiction between achieving strong bonding and maintaining alignment precision.
Solution Approach 2:
The dam acts as an intermediary element between the curved cover and the flat display substrate. It provides a stable reference structure that the substrate can bear against, mediating the bonding process and eliminating alignment errors that would otherwise occur when trying to bond directly to the curved surface.
2Manufacturing precision
If a dam is used to keep the bonding material evenly distributed between the display substrate and the cover, then the bonding material distribution is improved, but the substrate placement becomes problematic and errors increase
Solution Approach 1:
Instead of trying to place the substrate precisely onto bonding material (the conventional approach), the invention inverts the process: the substrate is designed to bear directly against the dam edges, and the bonding material is contained within the dam structure. This inversion makes the process easier and more error-free by eliminating the need for precise substrate placement.
Solution Approach 2:
The dam structure is prepared in advance with bonding material contained within it before the substrate is placed. This preliminary action of containing the bonding material within the dam eliminates the risk of misalignment during substrate placement, as the bonding material is already in its correct position and distribution.
3Manufacturing precision
If the display substrate bears directly against the dam with side edges along the entire edge, then alignment precision is improved, but the bonding process becomes more constrained
Solution Approach 1:
The dam structure serves multiple functions simultaneously: it contains the bonding material, provides alignment references for the substrate to bear against, and structurally connects the curved cover to the flat substrate. This multi-functionality reduces overall bonding process complexity while maintaining high alignment precision.
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
Improves the alignment and distribution of bonding material, reducing errors and ensuring a robust and precise adhesion of the display components.
Implementation Method 1
the spacer has at least one spring element that presses the display substrate against the dam with the respective opposite side edge that adjoins the dam
Data Source
Figure 1
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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), when viewed in a projection onto a plane parallel to the display substrate (4), rests along its circumference on the rectangular dam (12) with at least one or two of its side edges (11) directly on the dam (12) or the frame edge of the cover (6) formed by the dam (12).