Micro LED Encapsulation Structure for Electrostatic Breakdown Protection

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Solution Overview

Problem

Micro light-emitting diode displays are susceptible to damage from charge accumulation during manufacturing, leading to electrostatic discharge and malfunction due to the accumulation of static electricity on support layers and encapsulation surfaces.

Innovation Solution

Incorporating electrically conductive material layers with specific sheet resistances and functional materials in the micro light-emitting diode display structure to dissipate static charges and reduce surface resistance of the encapsulation layer, thereby preventing electrostatic breakdown.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the support layer is made of plastic film material, then the flexibility and ease of manufacture are improved, but charge accumulation occurs leading to electrostatic discharge

Engineering Contradiction:

Improveease of manufactureVSAvoidcharge accumulation

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

An electrically conductive material layer is introduced as an intermediary between the plastic film support layer and the optical adhesive layer. This conductive layer acts as a mediator that dissipates static charges accumulated on the support layer, preventing electrostatic discharge while maintaining the flexibility and ease of manufacture of the plastic film material.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The support structure becomes a composite system combining the plastic film support layer with an electrically conductive material layer. This composite structure integrates the flexibility of plastic film with the charge-dissipating properties of conductive materials, resolving the contradiction between ease of manufacture and charge accumulation prevention.

Inventive Principle:

Principle #40Composite materials

2Device complexity

If the encapsulation layer surface accumulates charges, then the manufacturing process is simplified, but electrostatic discharge damages the display

Engineering Contradiction:

Improvedevice complexityVSAvoidreliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

An electrically conductive material layer is introduced as an intermediary between the support layer and optical adhesive layer to dissipate static charges before they can accumulate on the encapsulation layer surface, preventing electrostatic discharge while maintaining manufacturing simplicity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The conductive material layer performs preliminary charge dissipation action during the manufacturing process, preventing charge accumulation on the encapsulation layer before it can reach critical levels that would cause electrostatic discharge and damage.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If charges accumulate on the encapsulation layer surface, then no additional protective measures are needed, but dust adsorption increases and electrostatic discharge occurs

Engineering Contradiction:

Improvedevice complexityVSAvoiddust adsorption

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The electrically conductive material layer serves as an intermediary that continuously dissipates static charges, preventing the electrostatic attraction that would otherwise cause dust adsorption on the encapsulation layer surface, thereby maintaining cleanliness without adding complex protective measures.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 effectively prevents static electricity accumulation, protecting the flexible thin film transistor array module and enhancing the display's reliability by reducing the risk of electrostatic discharge and improving light extraction efficiency.

Implementation Method 1

at least one electrically conductive material layer disposed on one side away from the flexible thin film transistor array module

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

an optical adhesive layer... improving light extraction efficiency

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS20240194839A1Shape-shifting, optical-electrical adjustment and protection stretch-seal structure design

Publication Date: 2024.06.13 GENERAL INTERFACE SOLUTION

AI summary

A micro light-emitting diode display is based on a conventional micro light-emitting diode display and includes at least one electrically conductive material layer or at least one functional material added to an encapsulation layer, so as to achieve antistatic effect. The micro light-emitting diode display solves the problem that the conventional micro light-emitting diode display is easily damaged by electrostatic breakdown.