Resist Composition Acid Generator Formula Lithography
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Solution Overview
Problem
Current resist compositions in lithography techniques face limitations in achieving excellent lithography properties, particularly with the use of acid generators, as they do not adequately address the need for improved solubility changes in developing solutions under exposure conditions.
Innovation Solution
A resist composition is developed that includes a base component and an acid-generator component, where the acid-generator component contains a compound represented by a specific general formula, enabling acid generation upon exposure and changing solubility in developing solutions, thereby enhancing lithography properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional acid generators are used in resist composition, then the resist material can undergo solubility change upon exposure, but the lithography properties such as sensitivity, resolution, and line edge roughness are insufficient
Solution Approach 1:
The patent modifies the chemical structure of the acid generator by introducing specific structural features (formula (1) with defined R1-R6 groups) to optimize acid generation efficiency and diffusion characteristics, thereby improving lithography properties including sensitivity, resolution, and line edge roughness
Solution Approach 2:
The resist composition employs a composite system combining the specially structured acid generator (formula (1)) with a base component and other additives, where each component contributes specific functions to achieve superior overall lithography performance that cannot be obtained with single components
2Ease of manufacture
If the acid generator structure is simplified for ease of manufacture, then production cost decreases, but the acid generation efficiency and solubility change upon exposure are reduced
Solution Approach 1:
The patent optimizes the molecular structure parameters of the acid generator (formula (1)) by carefully selecting R1-R6 substituents and ring structures to achieve the right balance between synthetic accessibility and acid generation efficiency, ensuring both ease of manufacture and high performance
3Device complexity
If the resist composition uses conventional components, then the formulation is simple and easy to manufacture, but the deprotection efficiency and acid diffusion control are insufficient
Solution Approach 1:
The patent creates a sophisticated composite resist composition where the specially structured acid generator (formula (1)) works synergistically with the base component and other additives to achieve precise acid diffusion control and high deprotection efficiency, overcoming the limitations of conventional single-component systems
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 resist composition exhibits improved lithography properties, including enhanced sensitivity, resolution, and line edge roughness, by effectively controlling acid diffusion and deprotection efficiency, leading to better pattern formation.
Implementation Method 1
a resist composition which generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid
Data Source
AI summary
A resist composition which generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid, and which includes a base component (A) which exhibits changed solubility in a developing solution under action of acid and an acid-generator component (B) which generates acid upon exposure, the acid-generator component (B) including a compound (B0-1) represented by general formula (b0) shown below (in the formula, Yx01 represents a divalent linking group; n represents an integer of 1 to 3; and M′m+ represents an organic cation having a valency of m.