Color Filter Composition Stabilization Against Storage Defects
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Solution Overview
Problem
Coloring compositions used in solid-state imaging devices and color filters often develop defects when stored for long periods, especially under temperature variations, leading to suboptimal film quality.
Innovation Solution
A coloring composition comprising a heterocycle-containing coloring agent, a phthalimide compound, and a solvent, where the phthalimide compound is added in specific proportions to Formulae (1) to (4) to stabilize the mixture and prevent defects during storage and film production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a coloring composition including a heterocycle-containing coloring agent is stored for a long period of time, then the coloring composition can be used after storage, but defects are likely to be generated in the film
Solution Approach 1:
The patent applies preliminary action by adding a specific compound (Formula 1 or 2) to the coloring composition before storage to prevent defect formation. This preventive compound is incorporated in advance to stabilize the coloring composition during long-term storage, thereby maintaining film quality without requiring temperature management during storage.
2Adaptability or versatility
If a coloring composition is stored in an environment with variations in temperature, then storage flexibility is improved, but defects are easily generated
Solution Approach 1:
The patent uses a specific compound (Formula 1 or 2) as an intermediary substance that mediates between the coloring composition and temperature variations. This compound acts as a stabilizer that protects the coloring composition from the harmful effects of temperature fluctuations, enabling flexible storage conditions while maintaining film quality.
3Device complexity
If conventional coloring compositions are used without additional stabilizing compounds, then the composition is simple, but defects occur during long-term storage
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition parameters of the coloring composition. Specifically, it adds a compound with a particular molecular structure (Formula 1 or 2) at a controlled concentration (0.01-5% by mass), which changes the stabilizing parameters of the composition to prevent defect formation during long-term storage.
Data Source
AI summary
Provided are a coloring composition capable of producing a film having fewer defects generated, and the like even in a case where the coloring composition is stored for a long period of time in an environment with variations in temperature, a color filter, a pattern forming method, a solid-state imaging device, and an image display device. The coloring composition includes a heterocycle-containing coloring agent such as a compound represented by Formula (1), a phthalimide compound, a solvent, and a resin. In Formula (1), R1 to R13 each independently represent a hydrogen atom or a substituent, and adjacent groups of R1 to R8 may be bonded to each other to form a ring, provided that at least one of the pairs of adjacent two groups of R1 to R8 is bonded to each other to form an aromatic ring.