Resin Composition for Phase-Separated Structures
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Solution Overview
Problem
Current methods for forming patterns using phase-separated structures formed by block copolymers require preparing block copolymers with specific structural periods for each pitch, limiting their application to multiple-pitch designs and increasing the risk of pattern defects.
Innovation Solution
A resin composition for forming a phase-separated structure is developed, comprising a block copolymer A and a block copolymer B, with a specific ratio of their structural periods (L0B/L0A) ranging from 0.70 to 1.20, allowing for the formation of patterns with multiple pitches without defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If block copolymers with specific structural periods are prepared for each pitch, then pattern formation for each pitch is achieved, but the complexity of preparing multiple block copolymers increases and adaptability to multiple-pitch designs is reduced
Solution Approach 1:
The patent applies universality by developing a single block copolymer composition that can form phase-separated structures for multiple different pitches. Instead of preparing separate block copolymers for each pitch requirement, the invention uses one composition with controlled molecular weight distribution that can adapt to form patterns at different scales, thereby reducing preparation complexity while maintaining manufacturing precision across multiple applications
Solution Approach 2:
The patent utilizes parameter changes by adjusting the molecular weight distribution characteristics of the block copolymer to control the structural period. By optimizing the weight average to number average molecular weight ratio (Mw/Mn) and other parameters within specific ranges, the same block copolymer composition can produce phase-separated structures with different structural periods suitable for multiple pitches without requiring different compositions
2Adaptability or versatility
If a single block copolymer composition is used for multiple pitches, then adaptability is improved, but the risk of pattern defects increases due to insufficient process margin
Solution Approach 1:
The patent applies parameter changes by establishing specific ranges for molecular weight distribution (Mw/Mn ratio between 1.05-2.0) and other composition parameters that provide sufficient process margin. These controlled parameter variations ensure that the block copolymer maintains stable phase separation behavior across different processing conditions and pitch requirements, thereby reducing pattern defects while achieving multi-pitch adaptability
Solution Approach 2:
The patent implements beforehand cushioning by pre-optimizing the molecular weight distribution and composition parameters of the block copolymer to create a robust formulation that is inherently resistant to processing variations. This pre-established buffer in the material properties allows for successful pattern formation at multiple pitches even when processing conditions vary, thereby reducing defect risk before problems occur
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 proposed resin composition improves the process margin, enabling the formation of patterns with multiple pitches without generating defects, and allows for greater flexibility in designing nanostructures with controlled position and orientation.
Implementation Method 1
a block copolymer A and a block copolymer B, the block copolymer A being a block copolymer in which a first block a, a second block a, and a third block a are bonded together, the block copolymer B being a block copolymer in which a first block b and a second block b are bonded together
Data Source
AI summary
A resin composition for forming a phase-separated structure that can improve a process margin. A resin composition for forming a phase-separated structure containing a predetermined block copolymer A and a predetermined block copolymer B, the composition having a ratio (L0B/L0A) of L0 of the block copolymer B (L0B) to L0 of the block copolymer A (L0A) of 0.70 or more and 1.20 or less.