Light Emitting Apparatus Adhesion Member Corrosion Protection

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Solution Overview

Problem

The existing light emitting devices face issues with luminous intensity degradation due to metal corrosion caused by exposure to external gases and environmental conditions, as the molding members used in packaging are gas permeable, leading to corrosion of metallic components.

Innovation Solution

Incorporating an adhesion member with hydroxy groups or benzotriazole (BTA) in the light emitting apparatus to prevent acid-induced corrosion by capturing or neutralizing acidic substances, thereby protecting the metallic parts and maintaining the luminous intensity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a molding member is used to package the light emitting device, then the device is protected and can represent various colors, but the molding member is gas permeable which allows external gas to penetrate and corrode the metal, causing luminous intensity to decrease

Engineering Contradiction:

Improveprotection of light emitting deviceVSAvoidgas penetration and metal corrosion

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

An adhesion member is introduced as an intermediary layer between the molding member and the metal components. This adhesion member contains acid capture materials that neutralize acidic substances penetrating through the molding member, preventing them from corroding the metal. The mediator captures harmful substances before they reach the metal surface.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The acidic substances that penetrate the molding member are converted from harmful factors into beneficial ones by using acid capture materials in the adhesion member. These materials capture and neutralize the acidic substances, transforming the harmful penetration effect into a controlled chemical reaction that protects the metal components.

Inventive Principle:

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

2Adaptability or versatility

If the metal in the light emitting device package is exposed to external gas, then gas exchange occurs, but the exposed metal corrodes due to acidic substances, causing luminous intensity to decrease

Engineering Contradiction:

Improvegas permeabilityVSAvoidmetal corrosion resistance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The adhesion member serves as a protective intermediary between the gas-permeable molding member and the metal components. It allows gas exchange to occur while simultaneously capturing acidic substances through acid capture materials, thereby protecting the metal from corrosion despite the permeable packaging.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The adhesion member provides localized protection specifically at the metal components where corrosion risk is highest. The acid capture materials are positioned in the adhesion member to create a localized chemical environment that neutralizes acidic substances before they reach the metal surface.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If the light emitting device is exposed to various environmental conditions such as temperatures and humidities, then the device operates in diverse environments, but the metal corrodes due to environmental exposure, causing luminous intensity to decrease

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoidenvironmental corrosion

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The adhesion member acts as a mediator between the light emitting device and the external environment. It allows the device to operate in diverse environmental conditions while the acid capture materials in the adhesion member neutralize harmful substances generated under these conditions, preventing metal corrosion.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The adhesion member with acid capture materials provides beforehand protection against environmental corrosion. By positioning the acid capture materials in advance in the adhesion member, the system is pre-prepared to neutralize acidic substances that may be generated under various environmental conditions before they can corrode the metal.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 use of adhesion members with hydroxy groups or benzotriazole effectively reduces metal discoloration and maintains the luminous intensity of light emitting devices by preventing acid-induced corrosion, enhancing their operational reliability.

Implementation Method 1

an adhesion member having hydroxy group (-OH) or benzotriazole (BTA)... the adhesion member includes at least one of benzotriazole and hydroxy group... effectively reduces metal discoloration and maintains the luminous intensity of light emitting devices by preventing acid-induced corrosion

Methodology Applied

Scientific EffectAcid capture: Absorption (physical)

Data Source

PatentEP2908354B1Light emitting apparatus

Publication Date: 2019.04.03 LG INNOTEK CO LTD

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AI summary

Disclosed is a light emitting apparatus which includes at least one light emitting device; a substrate under the light emitting device; a bonding member between the light emitting device and the substrate; and an adhesion member under the substrate, wherein the adhesion member includes at least one of benzotriazole and hydroxy group.