Photosensitive Fluororesin Composition Surface Roughness Control
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Solution Overview
Problem
Fluororesins used as partition wall materials in display manufacturing exhibit inadequate surface roughness after curing, limiting their effectiveness in inkjet methods for organic EL and other displays.
Innovation Solution
A photosensitive resin composition is developed, incorporating a fluorine-containing surface modifier with a specific molecular weight range, combined with a fluororesin having a high fluorine atom content, to improve the surface roughness of cured films and partition walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluororesin is used as partition wall material to enhance liquid repellency, then inkjet printing performance is improved, but surface roughness after curing becomes inadequate
Solution Approach 1:
The patent applies parameter changes by introducing a fluorine-containing surface modifier with specific molecular weight (1,000-15,000) and fluorine content (1-10 mass%) to modify the surface properties of the cured fluororesin film. This chemical parameter modification reduces surface tension and improves surface roughness while preserving the liquid repellency function.
Solution Approach 2:
The patent uses composite materials by combining fluororesin (A) with a fluorine-containing surface modifier in a photosensitive resin composition. The surface modifier acts as an additive that complements the fluororesin's liquid repellent properties while addressing the surface roughness issue, creating a synergistic composite system.
2Reliability
If fluororesin with high fluorine atom content is used to improve liquid repellency, then ink patterning is enhanced, but compatibility with base resin deteriorates
Solution Approach 1:
The fluorine-containing surface modifier acts as an intermediary substance that bridges the fluororesin and base resin. With controlled fluorine content (1-10 mass%) and specific molecular weight, it maintains compatibility with the base resin while still providing the necessary liquid repellency when combined with fluororesin (A).
Solution Approach 2:
By controlling the fluorine content parameter of the surface modifier within 1-10 mass%, the patent achieves optimal balance between liquid repellency and compatibility. This parameter optimization prevents excessive fluorine content that would cause incompatibility while maintaining sufficient hydrophobicity.
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 composition results in fluororesin cured films with improved surface roughness, enhancing the precision of ink patterning in displays by reducing surface tension and improving compatibility between fluororesins and base resins.
Implementation Method 1
a fluorine-containing surface modifier that acts to reduce the surface tension on the surface of a coating film of a resin composition
Implementation Method 2
a photosensitive component reactive with light having a wavelength of 100 to 600 nm
Data Source
AI summary
The present disclosure aims to provide a photosensitive resin composition that can improve the surface roughness of a fluororesin suitable for use as a partition wall material. The present disclosure relates to a photosensitive resin composition containing: a fluororesin having a fluorine atom content of 20 to 60 mass %; a fluorine-containing surface modifier including a fluorine compound having a weight average molecular weight (Mw) of 1,000 to 15,000; a base resin; a solvent; and a photopolymerization initiator.