Fluororesin Surface Modifier for Partition Wall Roughness

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Solution Overview

Problem

Fluororesins used as partition wall materials in display manufacturing exhibit surface roughness issues post-curing, which affect the precision and quality of ink patterning in displays like organic EL and quantum dot displays.

Innovation Solution

Incorporating a fluororesin with a specific structure as a surface modifier in a photosensitive resin composition, which includes a fluororesin with a crosslinking site and a photopolymerization initiator, to improve the surface roughness of partition walls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fluororesin is used as partition wall material in inkjet method, then liquid repellency is improved, but surface roughness deteriorates

Engineering Contradiction:

Improveliquid repellencyVSAvoidsurface roughness

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent changes the chemical composition parameters of the fluororesin by incorporating specific monomer units (formula 1) with controlled fluorine content (5-30 mass%) and molecular weight (500-10,000), thereby adjusting the surface properties to achieve both liquid repellency and smooth surface finish

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite fluororesin system combining polymerization unit (b1) with fluorinated alkyl groups and polymerization unit (b2) with ethylenic double bonds, where the synergistic interaction between these units provides both the desired liquid repellency and surface smoothness

Inventive Principle:

Principle #40Composite materials

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 the modified fluororesin composition results in partition walls with enhanced surface roughness, enabling precise ink patterning and improved display performance.

Implementation Method 1

a photosensitive resin composition, which includes a fluororesin with a crosslinking site and a photopolymerization initiator

Methodology Applied

Scientific EffectPhotopolymerisation: Photopolymerisation

Data Source

PatentUS20240134278A1Surface modifier, photosensitive resin composition, cured product, and display

Publication Date: 2024.04.25 CENT GLASS CO LTD

AI summary

The present disclosure aims to provide a novel surface modifier that can be introduced into a photosensitive resin composition to improve the surface roughness of a fluororesin suitable for use as a partition wall material. The present disclosure relates to a surface modifier containing a fluororesin (A) having a structure represented by the following formula (1):wherein each Ra independently represents a C1-C6 linear, C3-C6 branched, or C3-C6 cyclic alkyl group or a fluorine atom, and any number of hydrogen atoms in the alkyl group are replaced with fluorine atoms.