Touch Panel Attachment on Curved Translucent Panels
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Solution Overview
Problem
There is a need for an electronic device with a stable attachment method for a touch panel to a translucent panel featuring a curved portion, as existing solutions often result in line breaks due to the touch panel's bending at small radii of curvature.
Innovation Solution
A flexible touch panel is used with a larger radius of curvature than the translucent panel's curved portion, and an adhesive sheet is applied only to the flat surface of the translucent panel, allowing the touch panel to gently abut the curved portion without fully following its shape, reducing the likelihood of disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch panel fully follows the curved portion shape with small radius of curvature, then the attachment to the translucent panel is stable, but line breaks occur due to excessive bending
Solution Approach 1:
The patent changes the radius of curvature parameter of the touch panel's curved portion to be larger than that of the translucent panel's curved portion. This parameter modification allows the touch panel to gently abut the curved portion without fully following its shape, thereby preventing line breaks while maintaining stable attachment.
2Area of stationary object
If the touch panel is made flexible to conform to the curved surface, then the surface area for user interaction is increased, but the risk of disconnection at small radii of curvature increases
Solution Approach 1:
The patent modifies the geometric parameter (radius of curvature) of the touch panel's curved portion to be larger than the translucent panel's curved portion. This enables the touch panel to maintain flexibility for increased surface area while avoiding excessive bending that would cause disconnection.
3Area of stationary object
If the adhesive sheet is applied to the entire surface including the curved portion, then the attachment coverage is maximized, but the manufacturing complexity increases
Solution Approach 1:
The patent extracts the adhesive application area by applying the adhesive sheet only to the flat surface portion of the translucent panel and excluding the curved portion. This simplifies the manufacturing process while maintaining adequate attachment coverage on the flat area where the touch panel is positioned.
Data Source
AI summary
An electronic device according to the present disclosure includes a translucent panel including a front surface and a back surface, the translucent panel including a curved portion at an end portion, the curved portion being curved toward the back surface with respect to a central portion of the translucent panel. The electronic device also includes a touch panel located on the back surface of the translucent panel and configured to be covered with the central portion and the curved portion. The distance between the curved portion and the touch panel is shorter than the distance between the central portion of the translucent panel and the touch panel.