Capacitive Touch Panel Integrated Conductive Patterns Single Mask Process
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Solution Overview
Problem
Current capacitive touch panels face high costs, low production efficiency, and low yield rates due to the requirement of multiple mask processes in their manufacturing.
Innovation Solution
A capacitive touch panel with integrated transparent conductive patterns made from a single material layer, formed through a single mask patterning process, which allows for non-overlapping patterns that transmit touch signals efficiently without the need for via holes or increased sensing lines, enabling cost reduction and improved production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple mask processes are used to form bridge structure with via holes, then touch signal transmission is achieved, but manufacturing cost increases and production efficiency decreases
Solution Approach 1:
The patent merges multiple separate conductive patterns into a single integrated transparent conductive pattern formed by one mask process. This integration eliminates the need for multiple mask processes and via holes, directly resolving the contradiction by maintaining touch signal transmission while dramatically improving production efficiency and reducing manufacturing cost.
Solution Approach 2:
The patent extracts and eliminates the unnecessary via holes from the traditional bridge structure. By removing these intermediate connection elements and using direct integrated patterns, the design achieves touch signal transmission without the complexity of multiple fabrication steps, thereby improving productivity.
2Reliability
If multiple mask processes are used to form bridge structure with via holes, then touch signal transmission is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple conductive patterns into one integrated pattern that can be formed in a single mask process. This merging eliminates the need for sequential mask processes and via hole formation, directly reducing manufacturing cost while maintaining the essential touch signal transmission function.
Solution Approach 2:
The integrated transparent conductive pattern serves multiple functions simultaneously: it provides touch signal transmission, acts as a sensing electrode, and eliminates the need for separate via hole structures. This multi-functionality reduces the overall manufacturing complexity and cost.
3Ease of manufacture
If multiple mask processes are used to form bridge structure with via holes, then via holes can be formed for connection, but yield rate decreases
Solution Approach 1:
The patent removes the via hole formation step entirely from the manufacturing process. By using integrated transparent conductive patterns that directly provide connection and sensing functions, the design eliminates the reliability risks associated with via hole alignment and formation, thereby improving yield rate.
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
This solution reduces manufacturing costs and increases production efficiency while maintaining high yield rates by eliminating the need for multiple mask processes and via holes, allowing for accurate touch signal transmission and positioning.
Implementation Method 1
When a human's finger or other conductor touches the surface of the touch panel, an electric signal is generated due to mutual capacitance effect and self-capacitance effect
Implementation Method 2
When a human's finger or other conductor touches the surface of the touch panel, an electric signal is generated due to mutual capacitance effect and self-capacitance effect
Data Source
AI summary
An embodiment of the present application discloses a capacitive touch panel including a base substrate, on which a plurality of transparent conductive patters being capable of transmitting touch signals and not overlapping with each are provided, and each transparent conductive pattern is an integrated pattern made of a same material layer. An embodiment of the present application further provides a method for manufacturing a capacitive touch panel, which includes forming a plurality of transparent conductive patterns on a base substrate through one mask patterning process. An embodiment of the present application further includes a display device comprising the capacitive touch panel as described above. An embodiment of the present application can save masks and can manufacture capacitive touch panels at a low cost. Furthermore, the embodiments of the present application have advantages of high production efficiency and of high yield rate.