Halogen-Modified Acrylic Adhesive for Optical Clarity and Antistatic Performance

Solution Overview

Problem

Conventional adhesive compositions for flat panel displays that incorporate antistatic agents often compromise optical properties or exhibit insufficient antistatic performance, leading to increased manufacturing time and costs due to the independent formation of antistatic elements and optical films.

Innovation Solution

An adhesive composition comprising a base polymer with a copolymer of (meth)acrylic ester containing a halogen element and (meth)acrylate, combined with an ionic antistatic agent, which provides both effective antistatic and optical properties by maintaining transparency and improving productivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional antistatic agent is used in an adhesive layer of a conventional optical film, then antistatic properties are improved, but optical properties (transparency) are reduced

Engineering Contradiction:

Improveantistatic propertiesVSAvoidtransparency

Core Design Contradiction:

ReliabilityVSIllumination intensity

Solution Approach 1:

The adhesive composition uses a composite system combining a copolymer base polymer containing halogen elements (fluorine or chlorine) with an ionic compound antistatic agent. This composite approach allows simultaneous achievement of antistatic properties and optical transparency, resolving the contradiction between conventional antistatic agents that compromise transparency.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention changes the chemical composition parameters of the adhesive layer by incorporating specific halogen-containing monomers (with fluorine or chlorine) and optimizing the ionic compound content within specific ranges. These parameter changes enable the adhesive layer to achieve both antistatic performance and high transparency, overcoming the limitations of conventional formulations.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If independent formation of antistatic element and optical films is performed, then antistatic performance is improved, but manufacturing time and costs increase

Engineering Contradiction:

Improveantistatic performanceVSAvoidmanufacturing time

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The invention merges the antistatic function with the adhesive layer of the optical film by incorporating an ionic compound into the adhesive composition. This integration eliminates the need for separate antistatic element formation processes, thereby improving manufacturing efficiency and productivity while maintaining effective antistatic performance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The adhesive layer is designed to perform multiple functions simultaneously: providing adhesion between optical films and delivering antistatic properties through the incorporated ionic compound. This multi-functionality approach consolidates what would otherwise require separate components, reducing manufacturing steps and increasing productivity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If independent formation of antistatic element and optical films is performed, then antistatic performance is improved, but manufacturing costs increase

Engineering Contradiction:

Improveantistatic performanceVSAvoidmanufacturing costs

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention merges the antistatic function with the adhesive layer of the optical film by incorporating an ionic compound into the adhesive composition. This integration eliminates the need for separate antistatic element formation processes, thereby improving manufacturing efficiency and productivity while maintaining effective antistatic performance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The adhesive layer is designed to perform multiple functions simultaneously: providing adhesion between optical films and delivering antistatic properties through the incorporated ionic compound. This multi-functionality approach consolidates what would otherwise require separate components, reducing manufacturing steps and increasing productivity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 adhesive composition achieves superior antistatic performance with surface resistance ranging from 1×10^8 to 1×10^13 Ω/□, while maintaining high optical clarity and reducing manufacturing costs, thus enhancing the productivity of optical members.

Implementation Method 1

an antistatic agent, the antistatic agent including an ionic compound

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

a base polymer, the base polymer including a copolymer having at least one (meth)acrylic ester with a halogen element

Methodology Applied

Scientific EffectOptical transparency:

Data Source

PatentUS8168704B2Adhesive composition and optical member including the same

Publication Date: 2012.05.01 HOARDSUN HENGXIN(WUXI) MATERIALS CO LTD

AI summary

An adhesive composition includes a base polymer, the base polymer including a copolymer having at least one (meth)acrylic ester with a halogen element and at least one (meth)acrylate in a copolymeric unit, and an antistatic agent, the antistatic agent including an ionic compound.