Glass Touch Screen Protector with Opaque Perimeter for Curved Displays

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Solution Overview

Problem

Conventional touch screen protectors often trap air bubbles and dust, and require diligent cleaning to restore the screen's original luster when removed, and struggle to accommodate the curved edges of modern portable electronic devices.

Innovation Solution

A glass touch screen protector with a planar design and an opaque paint layer that conforms to the device's shape, featuring an adhesive layer and an optional anti-shatter membrane, which extends to the device's edges and includes a method for easy installation and removal without leaving residue.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional touch screen protectors (PET or transparent plastic) are used, then the screen is protected, but air bubbles and dust are trapped and the screen's original luster is lost when removed

Engineering Contradiction:

Improvescreen protectionVSAvoidair bubbles and dust trapping

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameter from conventional PET or transparent plastic to glass material. This parameter change fundamentally alters the surface properties, eliminating the trapping of air bubbles and dust while maintaining screen protection. The glass material's smooth, non-porous surface prevents contaminants from being trapped during application and removal.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs a composite structure consisting of multiple layers: a glass layer for protection and glare prevention, an adhesive layer for mounting, and optionally an anti-shatter membrane for enhanced durability. This composite material approach combines the advantages of different materials to achieve superior performance in protecting the screen while avoiding the drawbacks of conventional single-material protectors.

Inventive Principle:

Principle #40Composite materials

2Reliability

If conventional touch screen protectors are applied directly to the screen, then protection is provided, but diligent cleaning is needed to restore the screen's original luster when removed

Engineering Contradiction:

Improvescreen protectionVSAvoidcleaning requirement

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The glass touch screen protector is designed as a disposable protective element that can be easily removed and replaced without damaging the screen. The protector itself becomes the sacrificial element that accumulates dust and contaminants, while the screen remains pristine. This approach eliminates the need for diligent cleaning of the screen, as the protector is simply replaced rather than cleaned.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If touch screen protectors are made to cover the entire screen, then full protection is achieved, but curved edges of modern devices are not accommodated

Engineering Contradiction:

Improvefull screen protectionVSAvoidcurved edge accommodation

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by extending the protective glass layer beyond the active display area to include the curved edges of the device. The protector is designed with different functional zones: a central transparent area for the display and extended peripheral areas that follow the device's curved contours. This local adaptation allows the same glass material to provide both full-screen protection and curved edge accommodation.

Inventive Principle:

Principle #3Local quality

4Illumination intensity

If glass material is used for the touch screen protector, then glare and refraction are prevented, but the material is more fragile

Engineering Contradiction:

Improveglare and refraction preventionVSAvoidmaterial fragility

Core Design Contradiction:

Illumination intensityVSStrength

Solution Approach 1:

The patent uses a composite structure where a glass layer provides glare and refraction prevention, while an anti-shatter membrane layer provides enhanced strength and fracture resistance. This composite approach allows the glass material to perform its optical function while the membrane prevents the fragility issue by holding the glass together even if cracked.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The anti-shatter membrane acts as a pre-applied cushioning layer that prevents the glass from shattering upon impact. This beforehand protective measure ensures that even if the glass layer is subjected to stress or impact, the membrane absorbs and distributes the force, preventing catastrophic failure and maintaining screen protection.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS9760121B2Method for using glass touch screen protector

Publication Date: 2017.09.12 AEVOE INT

AI summary

Method is provided which includes mounting a touch screen protector to the front face of a portable electronic device. The front face has a declining surface portion extending along the outer perimeter thereof. The touch screen protector includes a planar sheet having a front side and a back side, an outer perimeter corresponding in shape to the device, and a transparent window portion. An opaque band is applied around the perimeter of the planar sheet, surrounding the transparent window portion. An adhesive layer is applied to the back side of the planar sheet for mounting the touch screen protector on the device. The planar sheet is sufficiently stiff such that a portion of the glass touch screen protector hangs over the declining surface portion of the front face of the portable electronic device when mounted thereon.