Color Filter Substrate Touch Electrode Integration
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Solution Overview
Problem
The existing touch panels, particularly in-cell touch panels, face reduced touch sensitivity due to the positioning of touch sensing electrodes on the array substrate, leading to interference and noise between display and touch signals, and the manufacturing process for color filter substrates is complex and costly.
Innovation Solution
A color filter substrate manufacturing method that simplifies the process by forming a light blocking layer, conducting layer, and intersecting black matrices with touch electrodes on the substrate, allowing for improved touch sensitivity and reduced manufacturing costs by positioning touch electrodes closer to the external touch points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the touch sensing electrode is arranged on the array substrate, then the manufacturing process is simplified, but the touch sensitivity is lowered and interference between display and touch signals is generated
Solution Approach 1:
The patent transitions the touch sensing electrode from the array substrate to the color filter substrate, utilizing a different dimensional plane. This spatial repositioning allows the touch sensing electrode to be closer to the external touch position while maintaining manufacturing simplicity through the color filter substrate's existing structure.
Solution Approach 2:
The patent divides the touch panel into distinct functional layers: the color filter substrate contains the touch sensing electrode, while the array substrate contains the touch driving electrode. This segmentation allows each substrate to perform its specific function independently, reducing interference between display and touch signals while maintaining manufacturing simplicity.
2Ease of manufacture
If the touch sensing electrode is arranged on the array substrate, then the manufacturing process is simplified, but interference and noise are generated between display signal and touch signal
Solution Approach 1:
The patent separates the touch sensing function from the display function by placing the touch sensing electrode on the color filter substrate while keeping the display signal routing on the array substrate. This spatial segmentation reduces electromagnetic interference and noise between the two signal types while maintaining manufacturing simplicity.
3Reliability
If a metal black matrix is formed on the touch sensing electrode to improve touch sensitivity, then the touch sensitivity is improved, but the manufacturing process becomes complex and costly
Solution Approach 1:
The patent combines the black matrix function with the touch sensing electrode structure by forming the black matrix and touch sensing electrode in an integrated manner on the color filter substrate. This merging eliminates the need for separate metal black matrix formation steps, reducing manufacturing complexity while maintaining touch sensitivity.
Solution Approach 2:
The color filter substrate is designed to serve multiple functions: it provides the color filter function, the black matrix function, and the touch sensing electrode function. This multi-functionality eliminates the need for additional metal black matrix layers, simplifying the manufacturing process while maintaining touch sensitivity.
4Reliability
If a metal black matrix is formed on the touch sensing electrode to improve touch sensitivity, then the touch sensitivity is improved, but the manufacturing cost increases
Solution Approach 1:
The patent merges the formation of the black matrix and touch sensing electrode into a single integrated process on the color filter substrate. This eliminates the need for separate metal layer deposition and patterning steps, reducing material costs and manufacturing expenses while maintaining touch sensitivity.
Solution Approach 2:
The color filter substrate is designed to perform multiple functions including color filtering, black matrix formation, and touch sensing. This multi-functionality reduces the need for additional expensive metal layers and complex manufacturing steps, thereby lowering overall manufacturing costs while maintaining touch sensitivity.
Data Source
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AI summary
The embodiments of the invention provide a color filter substrate and a manufacturing method thereof, and a display device, belonging to the field of display technology. Manufacturing the display device by using the above color filter substrate can simplify the manufacturing process and reduce the cost. The manufacturing method of the color filter substrate comprises: performing a single patterning process to form patterns of a plurality of first black matrixes and second black matrixes which are horizontally and longitudinally intersected, and patterns of a plurality of first touch electrodes positioned on surfaces of the second black matrixes away from a base substrate, wherein the patterns of the first black matrixes and the second black matrixes are intersected to define a plurality of color filter regions arranged in a form of matrix; and forming patterns of color filter layers within the color filter regions.