Convex Glass Screen Protector with Spacer

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Solution Overview

Problem

Conventional touch screen protectors often trap air bubbles and dust, are in direct physical contact with the screen, and require frequent cleaning, leading to reduced display quality and visual appeal due to fingerprint smudges.

Innovation Solution

A glass touch screen protector with a convex transparent window and a spacer system that maintains a near-contact distance from the screen, using a strong adhesive for secure attachment and easy removal, and an anti-static micro-particle coating to prevent interference fringes and static electricity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a transparent plastic protector is used to protect the display screen, then the screen is protected from damage, but air bubbles and dust are trapped between the protector and the screen

Engineering Contradiction:

Improvescreen protectionVSAvoidair bubbles and dust

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent employs a convex curved surface design for the transparent protector instead of a flat surface. This curvature creates a dome shape that prevents air bubbles and dust from becoming trapped between the protector and the screen, as the curved geometry allows air and particles to escape to the edges during application.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Ease of operation

If the touch screen protector is in direct physical contact with the touch screen, then touch sensitivity is maintained, but fingerprint smudges accumulate and require frequent cleaning

Engineering Contradiction:

Improvetouch sensitivityVSAvoidfingerprint smudges

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The convex curved surface creates a slight air gap between the protector and the screen surface, reducing direct contact points where fingerprints would accumulate. This curvature design allows the protector to maintain touch sensitivity while minimizing fingerprint adhesion areas.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent incorporates an anti-reflective coating on the transparent protector that reduces glare and improves visibility. This coating also helps mask minor fingerprint smudges and maintains display quality by reducing reflections that would otherwise be visible.

Inventive Principle:

Principle #32Color changes

3Reliability

If adhesive is used to attach the screen protector, then secure attachment is achieved, but adhesive residue remains upon removal and cleaning is required

Engineering Contradiction:

Improveattachment securityVSAvoidremoval cleanliness

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The patent uses a repositionable adhesive with controlled adhesive strength parameters that allow for secure attachment during normal use but enable clean removal without residue. The adhesive formulation is specifically designed to change its bonding characteristics over time, providing strong initial attachment that becomes easier to remove after curing.

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If a flat transparent protector is used, then manufacturing is simple, but interference fringes appear due to static electricity

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidinterference fringes

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The convex curved surface design eliminates interference fringes by preventing parallel surfaces from forming a capacitor-like structure that generates static electricity. The non-parallel geometry of the curved surface disrupts electric field formation, thereby preventing the appearance of interference patterns on the display.

Inventive Principle:

Principle #14Spheroidality (Curvature)

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 prevents air bubble and dust trapping, reduces fingerprint smudges, maintains display quality, and allows for easy installation and removal without adhesive residue, ensuring the touch screen's original luster and functionality.

Implementation Method 1

an anti-static micro-particle coating to prevent interference fringes and static electricity

Methodology Applied

Scientific EffectAnti-static effect: Electrostatics

Implementation Method 2

using a strong adhesive for secure attachment and easy removal

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS10824195B2Glass touch screen protector

Publication Date: 2020.11.03 AEVOE

AI summary

A glass touch screen protector for a portable electronic device having a front face including a touch screen portion and an outer perimeter. The touch screen protector can include a glass sheet having front and back sides, an outer perimeter that corresponds to that of the device, and a transparent window portion; and a spacer provided along the outer perimeter of the glass sheet surrounding the transparent window portion, having a thickness sufficient to space the glass sheet near but not in contact with the touch screen portion, and an exposed adhesive for removably mounting the protector upon the outer perimeter of the front face to form an enclosed air space between the transparent window portion of the plastic film, the spacer and the touch screen portion of the device. The glass sheet can be convex in shape with respect to the touch screen portion of the portable electronic device.