Hardmask Composition for Semiconductor Pattern Formation
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Solution Overview
Problem
Current hardmask compositions face challenges in achieving sufficient etch resistance and solubility while maintaining a high carbon content, which is crucial for forming fine patterns in ultra-fine semiconductor techniques.
Innovation Solution
A hardmask composition incorporating a compound represented by Chemical Formula 1, with specific aromatic and heteroaromatic groups, is used, along with a solvent, to enhance carbon content and solubility, resulting in improved etch resistance and crosslinking characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the carbon content of the hardmask composition is increased to improve etch resistance, then the etch resistance is improved, but the solubility decreases
Solution Approach 1:
The patent changes the chemical structure parameters of the hardmask composition by incorporating specific aromatic compounds (biphenyl, terphenyl, quadruphenyl groups) and controlling molecular weight distribution. This structural parameter change enables the composition to achieve high carbon content (improving etch resistance) while maintaining adequate solubility through the specific aromatic group configurations and molecular weight ranges (300-5000 g/mol).
Solution Approach 2:
The patent creates a composite hardmask composition by combining multiple aromatic hydrocarbon compounds with different molecular weights and structural characteristics. The composite includes compounds with biphenyl, terphenyl, and quadruphenyl groups in specific ratios, which collectively provide both high etch resistance (through high carbon content) and maintained solubility (through molecular weight distribution and structural diversity).
2Manufacturing precision
If traditional deposition methods are used to achieve fine patterns, then the pattern formation precision is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces complex mechanical deposition systems with a simplified spin-coating process. By formulating a hardmask composition with optimized solubility and etch resistance characteristics, the patent enables fine pattern formation (comparable to deposition methods) using only solution-based spin-coating, thereby eliminating expensive deposition equipment and processes while maintaining manufacturing precision.
Solution Approach 2:
The patent changes the physical-chemical parameters of the hardmask material to enable spin-coating compatibility. By controlling molecular weight (300-5000 g/mol) and incorporating specific aromatic groups that provide appropriate viscosity and solubility characteristics, the composition can be applied via simple spin-coating to achieve fine patterns, replacing complex deposition methods and reducing manufacturing costs.
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 achieves excellent etch resistance and solubility, allowing for effective pattern formation and transfer in semiconductor manufacturing, comparable to traditional deposition methods while maintaining economic efficiency.
Implementation Method 1
heat-treating the hardmask composition to form a hardmask layer
Implementation Method 2
improved etch resistance and crosslinking characteristics
Data Source
AI summary
A hardmask composition, a hardmask layer including a cured product of the hardmask composition, and a method of forming patterns using the hardmask layer including a cured product of the hardmask composition, the hardmask composition including a compound represented by Chemical Formula 1; and a solvent,