Curable Composition Block Copolymer Adhesiveness Developability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing curable compositions for color filters and light shielding films face challenges in achieving sufficient adhesiveness and developability, particularly as pixel sizes decrease, leading to noise generation in solid-state imaging elements and image display devices.
Innovation Solution
A curable composition comprising a block copolymer with a block A having ethylenically unsaturated groups in the side chain, a pigment, and a photopolymerization initiator, where the polymerizable compound content is 15 mass % or less, enhancing adhesiveness and developability through improved polymerizability and dispersion stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the content of polymerizable compound is increased to improve curability, then the curability is improved, but the adhesiveness of the cured product deteriorates
Solution Approach 1:
The patent optimizes the content of polymerizable compound to 15 mass % or less with respect to total solid content, and sets the content of block A in the block copolymer to 40-95 mass %. These parameter changes resolve the contradiction by finding the optimal balance point where sufficient curability is achieved while maintaining excellent adhesiveness of the cured product.
2Manufacturing precision
If the pixel size is decreased to improve resolution, then the resolution is improved, but noise generation increases
Solution Approach 1:
The patent introduces a light shielding film as an intermediary component between pixels. This film absorbs or blocks stray light that would otherwise cause noise in adjacent pixels, thereby enabling high-resolution imaging with small pixel sizes while suppressing noise generation through the mediating function of the light shielding film.
3Stability of the object's composition
If the content of polymerizable compound is increased to improve film formation, then the film formation is improved, but the developability of the coloring composition layer deteriorates
Solution Approach 1:
The patent carefully controls the polymerizable compound content at 15 mass % or less and adjusts the block copolymer composition with 40-95 mass % block A. This parameter optimization ensures that the coloring composition layer forms sufficient film while remaining highly developable, allowing clear pattern formation after exposure and development processing.
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 curable composition achieves excellent adhesiveness and developability of the cured product, improving the performance of color filters and solid-state imaging elements by maintaining stability and sensitivity, reducing noise generation.
Implementation Method 1
a curable composition including a colorant, a polymerizable compound, a photopolymerization initiator
Data Source
AI summary
Provided are a curable composition including, a block copolymer including a block A which has a constitutional unit having an ethylenically unsaturated group in a side chain of a polymer compound, a pigment, and, a photopolymerization initiator, in which a content of a polymerizable compound is 15 mass % or less with respect to a total solid content of the curable composition; a cured product of the curable composition; a color filter including the cured product; and a solid-state imaging element or an image display device including the color filter.