Adaptive Pressing Pad for Bonding Curved Display Windows
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Solution Overview
Problem
Challenges exist in securely attaching windows with both flat and curved portions to display panels, particularly in curved display devices, due to the difficulty in evenly bonding these components during the lamination process.
Innovation Solution
A pressing apparatus with an adsorption portion, pad portion, body portion, and pressing portion that allows for the movement of the pressing portion to change the shape of the pad portion, enabling secure attachment of windows with both flat and curved portions to display panels using electrostatic and vacuum forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a window with both flat and curved portions is attached to a display panel, then the user experience and image immersion are improved, but the bonding uniformity and attachment reliability deteriorate
Solution Approach 1:
The pressing portion is designed to move outward from the center of the body portion, dynamically changing the shape of the pad portion from a substantially circular shape to an elliptical shape. This dynamic adjustment allows the pad portion to adapt to both flat and curved portions of the window, ensuring uniform pressing force distribution and reliable bonding across different window geometries
Solution Approach 2:
The hardness of the pad portion is specifically controlled to be between 30 and 70 shore hardness, creating an optimal parameter range that balances flexibility and pressing force. This parameter optimization enables the pad portion to conform to curved surfaces while maintaining sufficient bonding pressure, resolving the contradiction between adapting to various window shapes and ensuring reliable bonding
2Force
If a rigid pressing structure is used, then the pressing force is sufficient, but the ability to conform to curved surfaces deteriorates
Solution Approach 1:
The pad portion is designed as a flexible element with controlled hardness (30-70 shore hardness) that can deform and conform to curved surfaces. When the pressing portion moves outward, the pad portion flexes to match the curvature of the window while still transmitting sufficient pressing force, thus maintaining both force and adaptability
Solution Approach 2:
The pressing portion is designed to move outward from the center of the body portion, dynamically changing the shape of the pad portion from a substantially circular shape to an elliptical shape. This dynamic adjustment allows the pad portion to adapt to both flat and curved portions of the window, ensuring uniform pressing force distribution and reliable bonding across different window geometries
3Manufacturing precision
If additional shaping processes are used to prepare the window, then the attachment quality is improved, but the manufacturing complexity and time increase
Solution Approach 1:
The pad portion automatically conforms to the shape of the window surface through its inherent flexibility and the movement of the pressing portion. The system performs self-adjustment without requiring external shaping processes, achieving high attachment quality while maintaining simple manufacturing processes
Solution Approach 2:
The hardness of the pad portion is specifically controlled to be between 30 and 70 shore hardness, creating an optimal parameter range that balances flexibility and pressing force. This parameter optimization enables the pad portion to conform to curved surfaces while maintaining sufficient bonding pressure, resolving the contradiction between adapting to various window shapes and ensuring reliable bonding
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
Ensures even and secure bonding of windows with both flat and curved portions to display panels without the need for additional shaping processes, enhancing the manufacturing efficiency and quality of display devices.
Implementation Method 1
the adsorption portion may include a first electrode and a second electrode that are arranged side by side with each other. polarity of the first electrode and polarity of the second electrode may be different from each other
Implementation Method 2
the apparatus may further include a vacuum pad extending through the first hole of the adsorption portion
Data Source
AI summary
A pressing apparatus includes: an adsorption portion having an adsorption surface, a pad portion located along an edge of the adsorption portion, a body portion under the pad portion, the bod portion supporting the adsorption portion and the pad portion, and a pressing portion covering at least a portion of a side surface of the body portion and attached to the pad portion. The shape of the pad portion is changeable with movement of the pressing portion.