Foldable Display Support Structure for ESD Discharge

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Solution Overview

Problem

Existing support structures for foldable display screens fail to effectively discharge static electricity, leading to potential damage from Electro-Static Discharge (ESD) during the folding process, resulting in defective screens with issues like poor lines or abnormal displays.

Innovation Solution

A support structure comprising a flexible conductive first support plate and spaced, rigid conductive second support plates with recessed contact regions filled with adhesive, allowing for electrical connection and discharge of static electricity, preventing accumulation and damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If rigid support plates are used to provide structural support, then the support strength is improved, but static electricity accumulates causing ESD damage

Engineering Contradiction:
Improvesupport strengthVSAvoidESD damage
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The rigid support plate is divided into multiple isolated contact regions that are spaced apart, allowing static electricity to be discharged at multiple discrete points rather than accumulating on a continuous rigid surface

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the support structure are given different properties: the first support plate provides overall structural support while the second support plate provides localized rigid support at specific contact regions, combining the benefits of both flexible and rigid materials

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If flexible support plates are used to allow folding, then the adaptability is improved, but the support strength is reduced

Engineering Contradiction:
Improvefolding capabilityVSAvoidsupport strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The support structure combines flexible conductive material (first support plate) with rigid conductive material (second support plate) to create a composite structure that exhibits both flexibility for folding and localized rigidity for support

Inventive Principle:
Principle #40Composite materials

3Strength

If adhesive is filled in recess regions, then the bonding strength is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvebonding strengthVSAvoidmanufacturing complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

Recess regions are pre-formed in the second support plate before bonding, creating prepared zones that guide adhesive placement and ensure optimal bonding areas without requiring complex real-time alignment during assembly

Inventive Principle:
Principle #10Preliminary action

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 ensures full discharge of static electricity, protecting the foldable display screen from ESD damage and enhancing its operational reliability by bonding the rigid support plates securely with the flexible plate, thus preventing defects.

Implementation Method 1

The recess is filled with adhesive for bonding the first support plate and the second support plate

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 2

at least a part of surface of each of the second support plates being in contact with the first support plate

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS11697265B2Support structure and manufacturing method thereof, and foldable display screen
Publication Date: 2023.07.11 CHENGDU BOE OPTOELECTRONICS TECH CO LTD
  • US11697265B2 patent drawing
  • US11697265B2 patent drawing
  • US11697265B2 patent drawing

AI summary

The present disclosure provides a support structure and a manufacturing method thereof, and a foldable display screen. The support structure includes: a first support plate made of flexible conductive material; at least two second support plates arranged on the first support plate with interval, the second support plates being made of rigid conductive material, at least a part of surface of each of the second support plates being in contact with the first support plate.