Color Filter Substrate Black Matrix and Spacer Integration
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Solution Overview
Problem
The process for fabricating a color filter substrate in liquid crystal display panels is complex and costly due to the large number of involved processes and material waste.
Innovation Solution
A color filter substrate is designed with a substrate base layer and a color resistance composite layer, where multiple color resistance layers and pillars are deposited and etched to form both the black matrix and spacers simultaneously, reducing the number of necessary processes and material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate processes are used for fabricating black matrix and spacers, then the structural integrity is ensured, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent combines the fabrication of black matrix and spacers into a single integrated process. The color resistance layers are patterned to simultaneously form both the black matrix regions and the spacer pillars, eliminating the need for separate fabrication processes while maintaining the structural integrity of both components
Solution Approach 2:
The color resistance layers serve multiple functions: they define the black matrix regions for light blocking and simultaneously form the spacer pillars for cell gap control. This multi-functionality reduces the total number of processes while ensuring both components perform their required functions effectively
2Manufacturing precision
If multiple separate processes are used for black matrix and spacer fabrication, then the precision of each component is maintained, but the production time and cost increase
Solution Approach 1:
The patent merges the patterning processes for black matrix and spacers into a single photolithography and etching sequence. By using the same color resistance layers for both structures, the precision requirements are met through unified process control, while production efficiency is improved by eliminating redundant process steps
Solution Approach 2:
The color resistance layers are deposited and patterned in advance to define both the black matrix and spacer locations simultaneously. This preliminary action establishes the precise positions of both components before subsequent fabrication steps, ensuring precision while streamlining the overall production流程
3Reliability
If traditional multi-process fabrication is used, then the quality of black matrix and spacers is ensured, but the raw material consumption and cost increase
Solution Approach 1:
The color resistance materials serve dual purposes: forming the black matrix for light absorption and creating the spacer pillars for cell gap maintenance. This multi-functional use of the same material layer reduces raw material consumption compared to traditional methods where separate materials and processes are used for each component
Solution Approach 2:
The patent combines the material deposition and patterning steps for black matrix and spacers into a single integrated process. By using the same color resistance layers for both structures, the total material consumption is reduced while maintaining the quality requirements of both components through unified process control
Data Source
AI summary
A display panel, including a color filter substrate (100), and the color filter substrate (100) includes a first color resistance layer (21), a second color resistance layer (22) and a third color resistance layer (23), a portion of the first color resistance layer, a portion of the second color resistance layer and a portion of the third color resistance layer are overlapped to form a black matrix (26), and a portion of the first color resistance layer, a portion of the second color resistance layer and a portion of the third color resistance layer are overlapped to form a spacer (27).