Curved Display Bonding Apparatus with Wire Stage Support
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Solution Overview
Problem
Existing curved display bonding apparatuses face challenges in stabilizing the curved glass during bonding, especially when the display unit is not made of flexible material, making it difficult to apply the bonding process effectively.
Innovation Solution
The apparatus uses a combination of a flexible stage and a wire stage to support the curved glass, allowing it to be seated on a plurality of wires for high stability, and includes an upper and lower adsorption mechanism to position and bond the curved glass and display unit with optical adhesive resin in between, ensuring reliable bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a flat bonding apparatus is used for curved displays, then the apparatus structure is simple, but the bonding precision and quality are poor due to inability to match the curved surface
Solution Approach 1:
The bonding apparatus employs a curved bonding surface that matches the curvature of the display panel. The curvature radius of the bonding surface is designed to be substantially equal to or smaller than the curvature radius of the display panel, enabling precise bonding of curved surfaces while maintaining reasonable structural complexity
Solution Approach 2:
The apparatus allows adjustment of the curvature radius of the bonding surface to match different display panel curvatures. By changing the geometric parameters of the bonding surface, the apparatus can adapt to various curved display requirements while maintaining bonding precision
2Ease of manufacture
If the bonding surface curvature radius is large, then the apparatus is easier to manufacture, but the bonding quality on highly curved displays deteriorates
Solution Approach 1:
The curvature radius of the bonding surface is optimized to be substantially equal to or smaller than the curvature radius of the display panel. This parameter adjustment ensures that the bonding surface can closely match the display curvature, achieving high bonding quality without excessive manufacturing complexity
Solution Approach 2:
The bonding surface is designed with specific local curvature characteristics that match the display panel's curvature. This localized optimization of the bonding surface geometry ensures high bonding quality at the critical bonding interface while keeping the overall apparatus structure manageable
3Reliability
If conventional bonding methods are used, then the process is simple, but organic solvent residue remains in the adhesive layer causing reliability issues
Solution Approach 1:
A drying chamber is introduced as an intermediary component in the bonding process. This separate chamber provides a controlled environment for drying the adhesive layer, enabling effective solvent removal through temperature and humidity control, thereby improving display reliability
Solution Approach 2:
The bonding process is extended to include a continuous drying step in the drying chamber. This continuous action ensures complete solvent evaporation and residue removal, eliminating reliability issues while maintaining a streamlined integrated process
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 provides high reliability in bonding curved glass and display units while accommodating various sizes of curved displays, reducing manufacturing costs and ensuring stable support for the curved glass during the bonding process.
Implementation Method 1
heating unit that heats the adhesive layer
Implementation Method 2
drying chamber that dries the adhesive layer by controlling temperature and humidity
Implementation Method 3
drying chamber that dries the adhesive layer by controlling temperature and humidity
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A curved display bonding apparatus for includes an upper adsorption mechanism to which the display unit is adsorbed, a flexible stage having a deformable outer appearance, and a wire stage on which the curved glass is seated, wherein the wire stage includes a plurality of wires, at least some of which is located above the flexible stage, such that the curved glass is seated on outer surfaces of the wires, at least a pair of the plurality of wires are spaced apart from each other, and the plurality of wires are seated on the flexible stage or are spaced apart from the flexible stage.