Shock Absorbing Laminate for Display Devices

Solution Overview

Problem

Existing shock-absorbing sheets for display devices require adhesive agents or tapes for bonding, leading to increased thickness and reduced flexibility, making it difficult to achieve the required thinness and bendability.

Innovation Solution

A shock-absorbing laminate comprising a shock-absorbing layer with adhesive properties, a heat diffusion layer, and an electromagnetic interference shielding layer, which can be affixed without adhesives, allowing for reduced thickness while maintaining shock absorbency and light shielding properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an adhesive agent layer or two-sided adhesive tape is provided on the shock-absorbing sheet to bond it to the back surface of the display device, then bonding is achieved, but the thickness of the display device increases and flexibility is reduced

Engineering Contradiction:

Improvebonding strengthVSAvoidthickness

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent combines the adhesive agent layer and the shock-absorbing sheet into a single integrated laminate structure. The adhesive layer is applied directly to the back surface of the shock-absorbing sheet, creating a unified component that provides both bonding and shock absorption functions simultaneously, eliminating the need for separate adhesive tapes or additional bonding layers.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention uses a composite laminate structure consisting of multiple layers including the shock-absorbing sheet, adhesive layer, and optional protective film. This composite material approach allows the integration of different functional properties (adhesion, shock absorption, flexibility) within a single bonded assembly, reducing overall thickness compared to using separate components.

Inventive Principle:

Principle #40Composite materials

2Reliability

If an adhesive agent layer or two-sided adhesive tape is provided on the shock-absorbing sheet to bond it to the back surface of the display device, then bonding is achieved, but the flexibility of the display device is reduced

Engineering Contradiction:

Improvebonding strengthVSAvoidflexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent combines the adhesive agent layer and the shock-absorbing sheet into a single integrated laminate structure. The adhesive layer is applied directly to the back surface of the shock-absorbing sheet, creating a unified component that provides both bonding and shock absorption functions simultaneously, eliminating the need for separate adhesive tapes or additional bonding layers.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shock-absorbing sheet itself serves as a flexible bonding medium, replacing rigid adhesive tapes. The sheet's inherent flexibility allows it to conform to the display device's surface while maintaining bonding strength, enabling the device to maintain its bendability and flexibility even when bonded.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If multiple separate layers (shock-absorbing sheet, adhesive layer, protective film) are used, then functional requirements are met, but the overall thickness increases

Engineering Contradiction:

Improvefunctional performanceVSAvoidthickness

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent combines the adhesive agent layer and the shock-absorbing sheet into a single integrated laminate structure. The adhesive layer is applied directly to the back surface of the shock-absorbing sheet, creating a unified component that provides both bonding and shock absorption functions simultaneously, eliminating the need for separate adhesive tapes or additional bonding layers.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shock-absorbing sheet is designed to serve multiple functions: it provides shock absorption, acts as a bonding substrate for the adhesive layer, and can serve as a protective layer for the display device's back surface. This multi-functionality reduces the need for additional separate layers, thereby reducing overall thickness.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 enables a thinner, more flexible shock-absorbing laminate that can be easily affixed to display devices, providing effective shock absorption and electromagnetic interference shielding without the need for additional adhesives, enhancing the device's design and functionality.

Implementation Method 1

a shock absorbing layer having an adhesive property and a stress relieving property

Methodology Applied

Scientific EffectStress relief: Stress Relaxation

Implementation Method 2

a heat diffusion layer having a thermal diffusive property

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12103277B2Shock absorbing laminate and display device

Publication Date: 2024.10.01 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A shock absorbing laminate includes: a shock absorbing layer having an adhesive property and a stress relieving property; a heat diffusion layer having a thermal diffusive property, and a shield layer having electromagnetic interference shielding characteristics. The shock absorbing layer, the heat diffusion layer, and the shield layer are stacked on one another. The shock absorbing laminate which has heat dissipation characteristics and electromagnetic interference shielding characteristics and which can be affixed to another member without using the adhesive layer can be provided.