Capacitive Touch Device Metal Jumpers Reduce Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional capacitive touch devices face limitations in response speed due to high resistance in the neck region of the sensor electrode units, primarily caused by the smaller cross-sectional area of the first axial conductive wire, which restricts the device's ability to accurately sense touch positions in both X and Y axial directions.
Innovation Solution
The introduction of a pair of metal jumpers placed at the connection points between the first axial electrodes and the first axial conductive wire, along with a second axial conductive wire that crosses the insulating layer, reduces the resistance between the electrodes, enhancing the sensing speed by creating a more conductive path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the first axial conductive wire is made with smaller cross-sectional area to maintain the traditional pattern, then the device structure is simplified, but the resistance increases and response speed decreases
Solution Approach 1:
Metal jumpers are introduced as intermediary conductive elements between the first axial electrodes and the first axial conductive wire. These jumpers serve as mediators to reduce the resistance at the connection points, allowing the transparent conductive wire to maintain its small cross-sectional area while achieving lower overall resistance through the metal jumper pathways.
Solution Approach 2:
The conductive system combines transparent conductive materials (for the axial wires and electrodes) with metal materials (for the jumpers). This composite approach leverages the transparency and flexibility of transparent conductors while utilizing the high conductivity of metals at critical connection points to reduce resistance.
2Reliability
If the first axial conductive wire is made with larger cross-sectional area to reduce resistance, then the response speed improves, but the device complexity increases
Solution Approach 1:
Instead of uniformly increasing the cross-sectional area of the entire first axial conductive wire, metal jumpers are strategically placed only at the connection points between electrodes and wires. This local enhancement of conductivity addresses the resistance issue at critical locations without requiring a global increase in material usage or structural complexity.
3Illumination intensity
If the transparent first axial conductive wire is used alone, then the pattern maintains transparency, but the resistance in the neck region is too high
Solution Approach 1:
The patent merges transparent conductive materials and metal materials to create a hybrid conductive system. The transparent conductive wire maintains optical properties, while the metal jumpers provide low-resistance electrical pathways, combining the advantages of both material types.
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 configuration significantly decreases the resistance in the X axial direction, thereby improving the response speed of the capacitive touch device, allowing for faster and more accurate detection of touch positions.
Implementation Method 1
The introduction of a pair of metal jumpers placed at the connection points between the first axial electrodes and the first axial conductive wire, along with a second axial conductive wire that crosses the insulating layer, reduces the resistance between the electrodes, enhancing the sensing speed by creating a more conductive path.
Implementation Method 2
An insulating layer 4 is used for making the first axial conductive wire 11 and the second axial conductive wire 21 electrically insulated from each other.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present disclosure relates to a touch device, and more particularly to a pattern of a capacitive touch device and a manufacturing method thereof. The pattern of the capacitive touch device comprises of a substrate, two adjacent first axial electrodes, a first axial conductive wire, and a pair of metal jumpers. The first axial conductive wire is disposed between the two adjacent first axial electrodes for connecting the two adjacent first axial electrodes. The pair of metallic metal jumpers is disposed on the connecting points of the two first axial electrodes and the first axial conductive wire. Accordingly, resistance caused by the connecting points of the two adjacent first axial electrodes and the first axial conductive wire can be reduced such that response speed of the pattern of the capacitive touch control device is increased.