Offset Printing Composition for Fine Pattern Transfer

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Solution Overview

Problem

The photolithography process for manufacturing electronic devices is complex and generates significant chemical waste, increasing manufacturing costs and degrading product competitiveness, while existing roll printing methods face challenges in producing uniform, fine patterns with mass production and precise adhesion.

Innovation Solution

An offset printing composition comprising a binder resin, a transfer and adhesion improving agent, a low-boiling point solvent, and a high-boiling point solvent is used with a silicone-based blanket, allowing for improved transfer characteristics, adhesion, thermal resistance, and chemical resistance, enabling the formation of fine patterns with reduced residue generation and defects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If photolithography process is used to manufacture electronic devices, then patterns can be formed on substrates, but the manufacturing process becomes complicated and chemical wastes are generated

Engineering Contradiction:
Improvepattern formation precisionVSAvoidmanufacturing process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates the photomask manufacturing step from the photolithography process by directly forming patterns through offset printing. The printing composition itself carries the pattern information, removing the need for separate mask fabrication and reducing process complexity while maintaining pattern formation capability

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses offset printing to create a copy of the desired pattern directly on the substrate through a printing composition. Instead of using a physical photomask that needs to be manufactured separately, the pattern is copied directly from the printing composition during the printing process, simplifying the overall manufacturing process

Inventive Principle:
Principle #26Copying

2Manufacturing precision

If photolithography process is used to manufacture electronic devices, then patterns can be formed on substrates, but chemical etching and stripping processes need to be repeated

Engineering Contradiction:
Improvepattern formation precisionVSAvoidmanufacturing efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent extracts and eliminates the chemical etching and stripping steps from the manufacturing process. The offset printing composition directly forms the final pattern on the substrate without requiring subsequent chemical processing, reducing the number of repeated steps and improving manufacturing efficiency

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces chemical processes (etching and stripping) with a direct mechanical printing process. The offset printing composition transfers the pattern directly to the substrate through mechanical contact and adhesion, eliminating the need for chemical reactions and multiple processing steps

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If gravure printing is used to form patterns, then one-time transfer can be achieved, but uniform thickness and fine patterns are difficult to manufacture

Engineering Contradiction:
Improveone-time transfer efficiencyVSAvoidpattern uniformity and fineness
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by using offset printing technology that can precisely control the pattern formation at the contact interface between the printing composition and substrate. This allows fine patterns to be formed with uniform thickness through controlled material transfer, combining the advantages of both gravure printing and precision patterning

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes the physical and chemical parameters of the printing composition, including using specific binders, solvents, and adhesion promoters. These parameter changes enable the composition to transfer fine patterns with uniform thickness while maintaining the one-time transfer efficiency of gravure printing

Inventive Principle:
Principle #35Parameter changes

4Manufacturing precision

If silicone-based blanket is used for offset printing, then fine patterns can be formed, but transfer characteristics and adhesion need improvement

Engineering Contradiction:
Improvefine pattern formation capabilityVSAvoidpattern transfer and adhesion reliability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent uses composite materials in the printing composition, combining multiple components including binders, solvents, and adhesion promoters. This composite formulation enhances both the transfer characteristics and adhesion reliability of the pattern on the silicone-based blanket, while maintaining fine pattern formation capability

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent optimizes the physical and chemical parameters of the printing composition, including viscosity, boiling point, and adhesion properties. These parameter changes improve the transfer characteristics and adhesion reliability of patterns formed on silicone-based blankets without compromising fine pattern precision

Inventive Principle:
Principle #35Parameter changes

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 offset printing composition effectively implements fine patterns with enhanced adhesion and resistance, minimizing residue formation and line width reduction during etching, thereby reducing defective rates and improving the precision and quality of printed patterns.

Implementation Method 1

a low-boiling point solvent having a boiling point of less than 100° C.

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 2

a high-boiling point solvent having a boiling point of 180° C. or more

Methodology Applied
Scientific EffectThermal resistance: Thermal Insulation

Data Source

PatentUS9868868B2Offset printing composition, printing method using same, and pattern comprising offset printing composition
Publication Date: 2018.01.16 LG CHEM LTD
  • US9868868B2 patent drawing
  • US9868868B2 patent drawing
  • US9868868B2 patent drawing

AI summary

The present specification relates to an offset printing composition, a printing method using the same, and a pattern including the offset printing composition.