Display Spacer Buffer Structure for Foldable Circuit Protection

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Solution Overview

Problem

Electronic devices with displays are prone to damage due to external forces, particularly when the display is flexible or foldable, as the display driving circuitry is vulnerable to bending and stress.

Innovation Solution

Incorporating a spacer with a buffer region on the display panel to protect the display driving circuitry, where the spacer has a lower hardness than other parts, providing cushioning and reducing damage from external forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display is made flexible or foldable to enable portable use, then adaptability is improved, but the display driving circuitry becomes vulnerable to bending and stress

Engineering Contradiction:

ImproveflexibilityVSAvoiddamage vulnerability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies beforehand cushioning by introducing a buffer layer positioned between the display panel and the display driving circuitry. This buffer layer is designed to be softer than both surrounding structures, creating a protective cushion that absorbs impact forces before they can reach the vulnerable circuitry. The buffer layer is formed through a recess in the spacer structure, creating a protective cavity that accommodates this soft protective material.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The buffer layer serves as an intermediary element between the display panel and the display driving circuitry. It mediates the interaction by absorbing and distributing impact forces, preventing direct transmission of stress to the circuitry. The buffer layer acts as a protective intermediary that allows the flexible display to bend while protecting the underlying electronics from damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a spacer is added to protect the display driving circuitry, then reliability is improved, but device complexity increases

Engineering Contradiction:

ImproveprotectionVSAvoidstructure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the spacer structure with the buffer layer by integrating the buffer layer into a recess of the spacer. This combination allows the spacer to serve dual functions: maintaining the rigid structure needed for display protection while simultaneously providing the soft buffer zone through its recessed portion. This merging reduces overall device complexity by combining multiple protective functions into a single integrated component.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The spacer structure applies local quality by having different regions with different properties: the main body of the spacer remains rigid to maintain structural integrity, while the recessed buffer region contains softer material to absorb impacts. This local differentiation allows the same component to provide both structural support and protective cushioning, improving reliability without proportionally increasing complexity.

Inventive Principle:

Principle #3Local quality

3Manufacturing precision

If the spacer has uniform hardness, then manufacturing precision is improved, but protection effectiveness decreases

Engineering Contradiction:

ImproveuniformityVSAvoidimpact absorption

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by creating a spacer structure with distinct regions of different hardness: the main spacer body maintains uniform hardness for structural stability and manufacturing precision, while the buffer region within the recess contains softer material to effectively absorb impacts. This local differentiation allows the spacer to simultaneously achieve manufacturing precision in its structural portions while providing effective impact absorption where needed.

Inventive Principle:

Principle #3Local quality

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 spacer effectively reduces damage to the display driving circuitry by absorbing and distributing external forces, enhancing the durability and longevity of the display.

Implementation Method 1

a buffer region formed to correspond to at least a portion of a region in which the display driving circuitry is positioned

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

the spacer effectively reduces damage to the display driving circuitry by absorbing and distributing external forces

Methodology Applied

Scientific EffectEnergy absorption: Damping

Implementation Method 3

a portion of the spacer corresponding to at least a portion of the second region in which the display driving circuitry is positioned is formed of a material having a lower hardness than another portion of the spacer

Methodology Applied

Scientific EffectHardness differential:

Data Source

PatentUS20250350674A1Electronic device including structure for reducing damage to display

Publication Date: 2025.11.13 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device is provided. The electronic device includes a display panel including a first region, a bending region extending and bent from the first region, a second region extending from the bending region, a spacer disposed on one surface of the second region, and display driving circuitry disposed on or over another surface of the second region, wherein, when viewing the second region from above, the spacer includes a buffer region formed to correspond to at least a portion of a region where the display driving circuit is positioned.