Touch Screen Protector with Conformable Perimeter for Curved Devices
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Solution Overview
Problem
Existing touch screen protectors often trap air bubbles and dust, and fail to conform to the curved edges of modern portable electronic devices, requiring diligent cleaning when removed and not accommodating the device's design effectively.
Innovation Solution
A touch screen protector comprising a glass sheet with a conformable perimeter portion that matches the device's curved edges, made of materials like metal, plastic, or silicone, which allows for easy mounting and repeated attachment without leaving residue, and includes an adhesive system to maintain contact only under excessive force, preventing interference fringes and ensuring capacitive functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid glass sheet is used for the touch screen protector, then protection strength is improved, but the ability to conform to curved edges deteriorates
Solution Approach 1:
The touch screen protector is divided into two distinct parts: a rigid glass sheet for the touch-sensitive area and a separate conformable perimeter portion for the curved edges. This segmentation allows each part to have optimized properties - the glass provides strength while the perimeter portion provides conformability to curved surfaces.
Solution Approach 2:
Different regions of the touch screen protector have different material properties. The central glass sheet region is rigid for protection, while the perimeter region is made of a softer, more flexible material to conform to curved edges. This local differentiation of material quality resolves the contradiction between rigidity and conformability.
2Strength
If adhesive is applied to ensure contact with the touch screen, then attachment strength is improved, but the ability to remove and reattach without residue deteriorates
Solution Approach 1:
The adhesive's bonding parameters are optimized to provide strong initial attachment while maintaining reversibility. The adhesive strength is calibrated to hold the protector firmly during use but allow clean removal and reattachment without leaving residue, balancing permanent fixation with reusability.
3Reliability
If the glass sheet is placed in direct contact with the touch screen, then protection effectiveness is improved, but air bubble trapping and dust accumulation worsen
Solution Approach 1:
The conformable perimeter portion acts as an intermediary element between the rigid glass sheet and the curved touch screen surface. It creates a gradual transition zone that facilitates proper alignment and contact, reducing the formation of air bubbles and dust pockets that would occur with direct rigid-to-curved contact.
4Adaptability or versatility
If the touch screen protector is designed to conform to curved edges, then adaptability to device shape is improved, but manufacturing complexity worsens
Solution Approach 1:
The protector is segmented into a standard glass sheet and a separate perimeter portion, allowing the complex curved conforming function to be isolated to one component. This simplifies manufacturing by enabling the glass sheet to be produced using standard flat glass processes, while only the perimeter portion requires specialized shaping for curved surfaces.
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
The solution effectively prevents air bubble trapping and dust accumulation, conforms to the device's shape, and allows for easy removal and reattachment without residue, maintaining capacitive functionality and preventing interference fringes during normal use.
Implementation Method 1
an adhesive provided along at least a portion of the conformable perimeter portion facing the portable electronic device and having adhesive strength enabling repeated removal and reattachment
Implementation Method 2
the touch screen portion allows a capacitive value on the touch screen portion when touched on the glass sheet
Data Source
AI summary
A touch screen protector for a portable electronic device has a front face that includes a touch screen portion and a declining outer perimeter. The touch screen protector includes: a glass sheet having front and back sides that corresponds in size to the touch screen portion; a conformable perimeter portion that corresponds to the declining outer perimeter of the front face of the portable electronic device; and an adhesive provided along at least a portion of the conformable perimeter portion facing the portable electronic device and having adhesive strength enabling repeated removal and reattachment. The touch screen portion allows a capacitive value on the touch screen portion when touched on the glass sheet.