Screen Protector with Bent Engaging Part for Bubble-Free Mounting

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Solution Overview

Problem

Existing screen protectors for mobile information terminals are difficult to attach neatly, prone to bubble formation, and can be easily peeled, leading to the need for frequent replacements.

Innovation Solution

A protector with a sheet that covers the screen and an engaging part around the periphery, which is thicker and bent to fit snugly with the terminal's sides, eliminating the need for precise positioning and preventing peeling due to aging degradation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a protection film is attached to the screen, then the screen is protected, but bubbles enter and the film is peeled due to aging degradation

Engineering Contradiction:

Improveprotection film durabilityVSAvoidattachment difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The protection film is divided into a sheet portion and a separate engaging part with bent faces. The engaging part is formed integrally with the sheet but functions as a distinct component that hooks onto the side faces of the terminal, separating the attachment function from the protection function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protection film transitions from a two-dimensional flat sheet to a three-dimensional structure with bent engaging parts that extend perpendicular to the screen surface. This allows the film to attach to the side faces of the terminal, creating anchoring in a new dimensional space.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If a protection film is attached to the screen, then the screen is protected, but a step forms between the film and screen causing fingers to be caught

Engineering Contradiction:

Improvescreen protectionVSAvoidfinger catching hazard

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The engaging part features bent faces with curved surfaces that match the contours of the terminal's side faces. This curvature allows the film to follow the terminal's geometry smoothly, eliminating sharp steps and corners that could catch fingers.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Reliability

If a protection film is attached to the screen, then the screen is protected, but precise positioning is required to prevent bubbles

Engineering Contradiction:

Improveprotection film qualityVSAvoidpositioning precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The engaging part with bent faces automatically positions itself on the side faces of the terminal during attachment. The geometry of the bent faces provides self-alignment, allowing the film to attach correctly without requiring precise manual positioning by the user.

Inventive Principle:

Principle #25Self-service

4Reliability

If a protection film is attached to the screen, then the screen is protected, but the film peels due to aging degradation

Engineering Contradiction:

Improveprotection film longevityVSAvoidprotection film service life

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The engaging part is pre-formed with bent faces that create mechanical interlocking with the terminal's side faces. This preliminary structural configuration ensures that as the film ages and degrades, the engaged edges provide anchoring that resists peeling forces.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10433446B2Protector

Publication Date: 2019.10.01 POWER SUPPORT

AI summary

Provided is a screen protector that can be mounted on a terminal and is not peeled due to aging degradation. A protector mounted on a mobile information terminal includes a sheet configured to cover a screen of the mobile information terminal, and an engaging part formed from a periphery of the sheet and configured to be engaged with side faces of the mobile information terminal while holding the sheet on the screen.