Foldable Display Support Layer With Holes And Dummies

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Solution Overview

Problem

Existing foldable display devices face challenges in maintaining structural integrity and protecting internal components during folding and unfolding operations, which can lead to mechanical stress and potential damage.

Innovation Solution

The proposed display device incorporates a support layer with strategically defined holes and a reinforcing part with dummies, which are designed to absorb shocks and distribute mechanical stress evenly, thereby enhancing the device's durability and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display device is made foldable to improve flexibility and portability, then ease of carrying is improved, but structural integrity and resistance to mechanical stress deteriorate

Engineering Contradiction:

ImproveflexibilityVSAvoidstructural integrity

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The support layer is divided into multiple sections with strategically positioned holes, creating a segmented structure that allows flexible folding while maintaining strength through the distributed hole pattern. The reinforcing part with dummies further segments the stress distribution across the foldable structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Holes are selectively positioned in specific regions of the support layer rather than uniformly distributed. The reinforcing part with dummies is located at critical stress points, creating local variations in structural properties that optimize both flexibility and strength at different locations.

Inventive Principle:

Principle #3Local quality

2Weight of moving object

If holes are defined in the support layer to reduce weight, then weight is reduced, but structural strength deteriorates

Engineering Contradiction:

ImproveweightVSAvoidstructural strength

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The support layer incorporates holes throughout its structure, creating a porous configuration that reduces material usage and weight. The strategic positioning and distribution of holes maintain structural integrity while achieving weight reduction.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The device uses a composite structure combining the support layer with holes and a reinforcing part with dummies. This composite approach allows the holes to reduce weight while the reinforcing part compensates for strength loss, achieving both weight reduction and maintained structural integrity.

Inventive Principle:

Principle #40Composite materials

3Measurement precision

If the digitizer module sensitivity is improved, then measurement precision is improved, but the device becomes more susceptible to electrical interference and eddy currents

Engineering Contradiction:

Improvedigitizer module sensitivityVSAvoidelectrical eddy currents

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The holes in the support layer, which could potentially increase eddy current susceptibility, are strategically positioned to actually reduce harmful electrical interference. The reinforcing part with dummies further mitigates eddy current effects, converting potential harm into benefit by protecting the sensitive digitizer module.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

This configuration effectively reduces the generation of electrical eddy currents, improves the sensitivity of the digitizer module, and minimizes weight while ensuring the display device remains lightweight and robust, capable of withstanding multiple folding and unfolding cycles.

Implementation Method 1

a reinforcing part disposed below the first support layer. The reinforcing part includes a reinforcing layer disposed below the first support layer and a plurality of dummies extending from the reinforcing layer and disposed into the plurality of first holes

Methodology Applied

Scientific EffectShock absorption: Damping

Implementation Method 2

This configuration effectively reduces the generation of electrical eddy currents, improves the sensitivity of the digitizer module

Methodology Applied

Scientific EffectEddy current reduction: Eddy Currents

Data Source

PatentUS12339705B2Display device

Publication Date: 2025.06.24 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes a display panel including a first non-folding area, a folding area, and a second non-folding area that are arranged in a first direction, a first support layer which is disposed below the display panel and in which a plurality of first holes overlapping the first non-folding area and the second non-folding area are defined, and a reinforcing part disposed below the first support layer. The reinforcing part includes a reinforcing layer disposed below the first support layer and a plurality of dummies extending from the reinforcing layer and disposed into the plurality of first holes.