Air Path Ventilation in Waterproof Tape for Display Deformation

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Solution Overview

Problem

Portable electronic devices with curved displays face deformation due to thermal expansion and contraction of air trapped inside, which affects the display panel's integrity and performance.

Innovation Solution

Incorporating an air path system within the battery tape and display tape to prevent the formation of airtight chambers, allowing air to circulate and vent outside, thereby mitigating the impact of thermal expansion and contraction on the display panel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the display module is attached to the frame using adhesive tape, then the display module is securely fixed, but air trapped inside forms an airtight chamber causing thermal expansion and contraction that deforms the display panel

Engineering Contradiction:

Improveattachment strengthVSAvoidthermal expansion and contraction

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

A waterproof tape with an air path is introduced as an intermediary between the display module and the frame. This tape maintains the attachment function while the air path allows trapped air to escape, preventing the formation of an airtight chamber and eliminating thermal expansion/contraction issues.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The waterproof tape with an integrated air path functions as a flexible thin film that provides both sealing and ventilation functions. The air path is formed as a through-hole or groove in the tape, allowing air to pass through while the tape itself maintains attachment and waterproofing.

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If the battery mounting structure is sealed to protect internal components, then protection is improved, but air trapped in the chamber cannot escape causing pressure buildup from thermal expansion

Engineering Contradiction:

Improveprotection of internal componentsVSAvoidair pressure from thermal expansion

Core Design Contradiction:

ReliabilityVSStress or pressure

Solution Approach 1:

The waterproof tape with air path acts as a mediator that allows pressure equalization between the internal chamber and external environment. The air path prevents pressure buildup while the waterproof tape maintains protection of internal components.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The waterproof tape effectively functions as a porous material with an integrated air path, allowing selective passage of air molecules while maintaining waterproofing. The air path is designed as a controlled opening that permits gas permeation but blocks liquid water.

Inventive Principle:

Principle #31Porous materials

3Adaptability or versatility

If the display module uses flexible material for curvature, then user experience and grip are improved, but the flexible material is easily deformed by pressure and heat

Engineering Contradiction:

Improvecurved display capabilityVSAvoidstructural stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The air path in the waterproof tape serves as a pressure relief mechanism that prevents excessive pressure buildup on the flexible display module. By allowing air to escape during thermal expansion, the air path reduces stress on the flexible material, maintaining its structural stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The air path system changes the pressure parameter within the chamber, allowing pressure to equalize with the external environment. This prevents pressure differential from causing deformation of the flexible display module while maintaining its curved shape capability.

Inventive Principle:

Principle #35Parameter changes

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 air path system effectively prevents deformation of the display panel, maintaining its integrity and performance by allowing air to circulate and vent outside, thus addressing the issue of thermal expansion and contraction.

Implementation Method 1

display modules may be deformed due to thermal expansion and contraction of air trapped in portable electronic devices

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 2

display modules may be deformed due to thermal expansion and contraction of air trapped in portable electronic devices

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Data Source

PatentUS10778820B2Electronic device for preventing deformation of a display panel

Publication Date: 2020.09.15 SAMSUNG ELECTRONICS CO LTD

AI summary

Provided is an electronic device including: a battery; a housing; a battery tape adhering the battery and the housing; a display screen provided at a front surface of the housing; a display tape adhering the display screen and the housing; a chamber adjacent to the battery; and an air path that connects to the chamber that prevents the chamber from being airtight. Such an electronic device may prevent the display screen from being deformed due to heat and air expansion caused by a temperature change in the chamber.