Photosensitive Composition Pigment Derivative Stability
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Solution Overview
Problem
The challenge is to develop a photosensitive composition that maintains pattern line width stability and prevents defects over time, especially in high humidity environments, while achieving thin film thickness in solid-state imaging elements like color filters.
Innovation Solution
A photosensitive composition comprising a pigment, a pigment derivative with a triazine ring, and a dispersant with ethylenically unsaturated bonds, where the pigment derivative has a low molar absorption coefficient and the dispersant promotes crosslinking, ensuring stable film formation and preventing pigment aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the concentration of coloring material in the photosensitive composition is increased to achieve thin film thickness, then film thickness is reduced, but pattern line width stability deteriorates due to aggregation over time
Solution Approach 1:
The patent introduces a specific dispersant as an intermediary substance between the coloring material and the film matrix. This dispersant prevents aggregation of coloring material particles while maintaining high concentration, thereby preserving pattern line width stability during leaving without compromising thin film formation
Solution Approach 2:
The patent modifies the chemical parameters of the photosensitive composition by selecting specific dispersants with particular molecular structures and properties. This parameter optimization enables the system to maintain both high coloring material concentration for thin films and low aggregation tendency for pattern stability
2Length of stationary object
If the concentration of coloring material is increased to achieve thin film, then film thickness is reduced, but defect generation increases due to aggregation in high humidity environments
Solution Approach 1:
The dispersant acts as a protective intermediary that isolates coloring material particles from each other and from environmental moisture. This prevents aggregation-driven defects while enabling high concentration formulation for thin films, even in high humidity conditions
Solution Approach 2:
The patent creates a composite photosensitive composition system combining coloring material, dispersant, and other components in specific ratios. This composite structure provides both the optical properties needed for thin films and the stability needed to prevent defect generation in humid environments
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 pattern line width stability and suppresses defect generation over time, enabling the formation of thin films with improved spectral performance and increased sensitivity in imaging elements.
Implementation Method 1
a pigment derivative B including a pigment derivative B1 in which a maximum value of a molar absorption coefficient in a wavelength range of 400 to 700 nm is 3000 L·mol−1·cm−1 or less
Implementation Method 2
a dispersant C including a dispersant C1 having an ethylenically unsaturated bond-containing group
Implementation Method 3
a photosensitive composition comprising a pigment, a pigment derivative with a triazine ring, and a dispersant with ethylenically unsaturated bonds
Data Source
AI summary
Provided are a photosensitive composition including a coloring material A including a pigment, a pigment derivative B, and a dispersant C, in which the pigment derivative B includes a pigment derivative B1 in which a maximum value of a molar absorption coefficient in a wavelength range of 400 to 700 nm is 3000 L·mol−1·cm−1 or less, the dispersant C includes a dispersant C1 having an ethylenically unsaturated bond-containing group, and a total content of the coloring material A and the pigment derivative B in a total solid content of the photosensitive composition is 50% by mass or more; a film formed of the photosensitive composition; an optical filter, a solid-state imaging element; and an image display device.