Mini LED Terminal Antioxidant Coating for Stable Binding

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Solution Overview

Problem

In the manufacturing of Mini LED backlight modules, conventional antioxidants fail to coat binding terminals effectively, leading to oxidation during high-temperature processes, which affects the binding connection between terminals and drive assemblies.

Innovation Solution

A novel antioxidant composition comprising a film-forming component, such as substituted or unsubstituted acrylic resin, isopropanolamine, and imidazoline, combined with a volatilization-suppressing additive like lead-containing complexes or liquid paraffin wax, which has a higher boiling point than the film-forming component, is applied to terminals to slow volatilization and prevent oxidation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional antioxidant is coated to a binding terminal used for binding a drive assembly, then the terminal is protected from oxidation, but the binding terminal cannot be bound to the drive assembly

Engineering Contradiction:
Improveoxidation resistanceVSAvoidbinding capability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies antioxidant coating to terminals in advance during the manufacturing process, before the binding operation. This preliminary protection allows the antioxidant to be present on the terminal surface when binding occurs, but the coating is formulated to not interfere with the binding mechanism. The antioxidant is applied preliminarily to prevent oxidation during subsequent high-temperature processes while maintaining binding functionality.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent differentiates the antioxidant coating application between different terminal types. Binding terminals receive a coating formulation or application method that preserves binding capability, while other terminals may receive standard antioxidant coating. This local differentiation allows oxidation protection where needed without compromising the binding function of specific terminals.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If no antioxidant is coated to the binding terminal, then the binding terminal can be bound to the drive assembly, but the binding terminal is prone to be oxidized in the manufacturing process

Engineering Contradiction:
Improvebinding capabilityVSAvoidoxidation resistance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The antioxidant coating is applied in advance to binding terminals using a formulation or method that ensures the terminal remains bindable. The coating is applied preliminarily at a stage when the terminal is still to be bound, allowing the antioxidant to form a protective layer that does not prevent subsequent binding operations or interfere with the drive assembly connection.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent modifies the parameters of the antioxidant coating system, such as concentration, viscosity, or composition, to create a coating that provides oxidation protection without preventing binding. By changing the coating parameters, the antioxidant film becomes thin enough or sufficiently non-interfering to allow binding while still providing protection against oxidation during high-temperature manufacturing processes.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If a high-temperature manufacturing process is used, then the manufacturing efficiency is improved, but the binding terminal is prone to be oxidized

Engineering Contradiction:
Improvemanufacturing efficiencyVSAvoidoxidation resistance
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The antioxidant coating is applied in advance to terminals before they undergo high-temperature manufacturing processes. This preliminary protective action counteracts the oxidizing effect of the subsequent high-temperature processing. The antioxidant film is formulated to remain stable and protective during the high-temperature manufacturing steps, preventing oxidation without requiring reduction of the manufacturing temperature.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The antioxidant coating acts as an intermediary protective layer between the terminal surface and the oxidizing environment created by high-temperature manufacturing processes. This intermediate film prevents direct contact between oxygen and the terminal metal during high-temperature processing, allowing efficient high-temperature manufacturing while maintaining oxidation resistance through the protective intermediary layer.

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 antioxidant composition effectively reduces terminal oxidation and maintains a stable binding connection by gradually volatilizing during the manufacturing process, ensuring the integrity of the backlight module's connections.

Implementation Method 1

a film-forming component and a volatilization-suppressing additive, wherein the film-forming component includes at least one of a substituted or unsubstituted acrylic resin, isopropanolamine, and imidazoline

Methodology Applied
Scientific EffectFilm formation: Deposition (physical)

Implementation Method 2

a boiling point of the volatilization-suppressing additive is greater than that of the film-forming component

Methodology Applied
Scientific EffectVolatilization suppression: Evaporation

Data Source

PatentUS20250006867A1Antioxidants, backlight modules and manufacturing method thereof
Publication Date: 2025.01.02 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
  • US20250006867A1 patent drawing
  • US20250006867A1 patent drawing

AI summary

Disclosed are an antioxidant, a backlight module and a manufacturing method thereof. The antioxidant includes a film-forming component and a volatilization-suppressing additive. The film-forming component includes at least one of a substituted or unsubstituted acrylic resin, isopropanolamine, and imidazoline, and a boiling point of the volatilization-suppressing additive is greater than that of the film-forming component.