Capacitive Touch Panel Electrostatic Protection Layer Integration
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Solution Overview
Problem
Traditional capacitive touch panels face issues with increased thickness and reduced sensitivity due to the large capacitance between the electrostatic protection layer and the touch sensing layer, which are located on the backside of a color filter substrate.
Innovation Solution
The capacitive touch panel design places the electrostatic protection layer on the other side of the color filter substrate with a black matrix, incorporating a touch array pattern and an electrostatic protection discharging pattern that are insulated from each other, allowing for both touch sensing and electrostatic protection without increasing panel thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both an electrostatic protection layer and a touch sensing layer are provided on the backside of a color filter substrate, then electrostatic protection and touch sensing functions are achieved, but the thickness of the touch panel increases and capacitance between the layers increases reducing sensitivity
Solution Approach 1:
The patent combines the electrostatic protection layer and touch sensing layer into a single integrated layer on the backside of the color filter substrate. This layer simultaneously performs both electrostatic protection and touch sensing functions, eliminating the need for separate layers and thus reducing the overall thickness of the touch panel while maintaining both protective and sensing capabilities.
Solution Approach 2:
The integrated layer is divided into distinct functional regions: a first region serving as the electrostatic protection layer and a second region serving as the touch sensing layer. These regions are spatially separated and insulated from each other, allowing each to perform its specific function independently while being part of the same physical layer structure.
2Reliability
If both an electrostatic protection layer and a touch sensing layer are provided on the backside of a color filter substrate, then electrostatic protection and touch sensing functions are achieved, but capacitance between the layers increases reducing sensitivity
Solution Approach 1:
The integrated layer is divided into distinct functional regions: a first region serving as the electrostatic protection layer and a second region serving as the touch sensing layer. These regions are spatially separated and insulated from each other, allowing each to perform its specific function independently while being part of the same physical layer structure.
Solution Approach 2:
An insulation layer is introduced between the electrostatic protection layer and the touch sensing layer within the integrated structure. This insulation layer acts as an intermediary that prevents direct electrical interaction between the two functional regions, thereby eliminating parasitic capacitance that would otherwise reduce touch sensing sensitivity.
3Reliability
If separate electrostatic protection layer and touch sensing layer are used, then both functions are achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines the electrostatic protection layer and touch sensing layer into a single integrated layer on the backside of the color filter substrate. This layer simultaneously performs both electrostatic protection and touch sensing functions, eliminating the need for separate layers and thus reducing the overall thickness of the touch panel while maintaining both protective and sensing capabilities.
4Reliability
If separate electrostatic protection layer and touch sensing layer are used, then both functions are achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines the electrostatic protection layer and touch sensing layer into a single integrated layer on the backside of the color filter substrate. This layer simultaneously performs both electrostatic protection and touch sensing functions, eliminating the need for separate layers and thus reducing the overall thickness of the touch panel while maintaining both protective and sensing capabilities.
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 design reduces the thickness of the touch panel, eliminates capacitance between the protection and sensing layers, and enhances sensitivity while streamlining the manufacturing process by integrating both functions into a single layer.
Implementation Method 1
an electrostatic protection layer and a touch sensing layer are generally provided on the backside of a color filter substrate. The electrostatic protection layer is used to reduce the influence on display quality caused by the static in the outer environment
Implementation Method 2
the touch sensing layer is used to realize touch sense
Data Source
AI summary
An embodiment of the present invention discloses a capacitive touch panel, which is provided with an electrostatic protection touching layer, the electrostatic protection touching layer comprises a touching array pattern and an electrostatic protection discharging pattern, and the electrostatic protection discharging pattern is disposed in a space of the touching array pattern, complementing with the touching array pattern. The capacitive touch panel of the embodiment of the present invention, reduces the thickness of touch panel, and saves the material by forming the electrostatic protection layer and the touch sensing layer on one layer, which realizes the touching sense as well as the electrostatic protection, eliminates the capacitance between the electrostatic protection layer and the touch sensing layer, and improves the sensitivity of touching sense.