Siloxane Black Matrix Composition for High-Temperature Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing black matrix compositions for display devices lack high heat resistance, leading to thermal decomposition and outgassing issues during the high-temperature vacuum processes used in thin film transistor formation, which compromises light shielding and insulating properties.
Innovation Solution
A composition comprising a siloxane polymer with crosslinkable silanol groups, a black colorant, a silanol condensation catalyst, and a solvent is used to form a black matrix, enhancing heat resistance and light shielding properties, suitable for high-luminance display devices and high-temperature processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If organic polymer is used as the base material for black matrix composition, then ease of manufacture and processing is improved, but heat resistance deteriorates during high-temperature vacuum processes
Solution Approach 1:
The patent uses siloxane polymer as a base material that combines the processability of organic polymers with superior heat resistance. The siloxane polymer maintains ease of manufacture while withstanding high-temperature vacuum processes without thermal decomposition, resolving the contradiction between ease of manufacture and heat resistance.
2Device complexity
If conventional black matrix composition is used, then manufacturing process is simple, but thermal decomposition and outgassing occur during high-temperature vacuum processes
Solution Approach 1:
The patent changes the chemical composition parameters of the black matrix by using siloxane polymer instead of conventional organic polymers. This parameter change enables the material to withstand high-temperature vacuum processes without thermal decomposition or outgassing, improving reliability while maintaining manufacturing simplicity.
3Object-affected harmful factors
If black matrix is formed on color filter substrate side, then light shielding is achieved, but display pixel area is reduced due to redundant design
Solution Approach 1:
The patent applies different functional qualities to different regions by forming the black matrix with enhanced heat resistance directly on the array substrate where thin film transistors are located. This local application of heat-resistant black matrix eliminates the need for separate color filter substrate bonding, maintaining light shielding functionality while maximizing display pixel area.
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 solution provides a black matrix with improved heat resistance and light shielding properties, allowing its formation on a thin film transistor array substrate, reducing the need for redundant design and minimizing power consumption, while maintaining insulating properties.
Implementation Method 1
a siloxane polymer having a repeating unit represented by the following general formulae (Ia) and/or (Ib)... (II) a silanol condensation catalyst
Implementation Method 2
a black colorant... to prevent light leakage between pixels
Data Source
AI summary
[Problem] To provide a material, which is a composition for a black matrix, and which is suitable for a display device structure having high luminance and suitable for producing a black matrix having high heat resistance and high light shielding properties.[Means for Solution] To use a composition for a black matrix comprising (I) a siloxane polymer having specific repeating unit(s), (II) a silanol condensation catalyst, (III) a black colorant, and (IV) a solvent.