Touch Control Glazing Integrating LED and Capacitive Sensor
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Solution Overview
Problem
Existing touch control glazings face alignment issues during manufacturing due to the need for additional layers and complex component alignment, leading to increased costs and manufacturing complexity.
Innovation Solution
A touch control glazing design that integrates a capacitive touch sensitive device and a light emitting diode on a single electrically conductive layer, eliminating the need for additional alignment and reducing component count, with the light emitting diode indicating the touch sensitive area and functional state directly on the conductive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional layers and components are used for touch sensitive device and light emitting diode integration, then the functionality is improved, but the manufacturing complexity and alignment difficulty increase
Solution Approach 1:
The patent combines the light emitting diode and touch sensitive device into a single integrated component structure. The light emitting diode is positioned within the same layer as the touch sensitive electrodes, eliminating the need for separate alignment layers and reducing manufacturing complexity while maintaining both lighting and touch sensing functionalities.
Solution Approach 2:
The integrated component serves multiple functions simultaneously - the light emitting diode provides illumination while the touch sensitive electrodes detect user input. This multi-functional design reduces the number of separate components needed and simplifies the overall device structure without compromising functionality.
2Adaptability or versatility
If additional layers are added for component integration, then the functionality is improved, but the thickness of the glazing increases
Solution Approach 1:
The light emitting diode and touch sensitive device are merged into the same layer structure, eliminating the need for additional separation layers. This integration maintains both functionalities while minimizing the overall thickness of the glazing assembly.
3Manufacturing precision
If precise alignment of additional layers is required, then the positioning accuracy is improved, but the manufacturing time and cost increase
Solution Approach 1:
By merging the light emitting diode and touch sensitive device into a single layer, the patent eliminates the need for complex multi-layer alignment processes. This reduces manufacturing steps, improves production efficiency, and lowers costs while maintaining precise component positioning.
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
Simplifies the manufacturing process, reduces costs, and minimizes the thickness of the glazing while ensuring effective indication of the touch sensitive area and functional state, enhancing user interaction and visibility.
Implementation Method 1
In the case for example of a capacitive touch sensitive device, when it is approached by a human finger, the capacitance between the two coupled electrodes changes.
Implementation Method 2
a light source such as a light emitting diode is indicating the position of the touch sensitive device
Data Source
AI summary
A touch control glazing includes a first transparent glazing; an electrically conductive layer and a capacitive touch sensitive device including a touch sensitive structure formed in the electrically conductive layer, the touch sensitive structure including a ground electrode and a touch electrode having a touch sensitive area; and a light emitting diode arranged on the electrically conductive layer to indicate the touch sensitive area, the light emitting diode having a light emitting surface facing at least partially the touch sensitive area, the light emitting diode having a first terminal being an first electrode zone electrically connected to the ground electrode and a second terminal being a second electrode zone electrically connected to the touch sensitive area.