Dual-Mode Touch Panel Noise Reduction via Integrated Display Structure
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Solution Overview
Problem
Existing touch panels face challenges in reducing noise interference that affects touch sensitivity, and they often require separate manufacturing and attachment to display panels, limiting their operational flexibility.
Innovation Solution
A display device with a touch panel that operates in two modes (electrostatic capacitive and electromagnetic induction) and includes a dual-driver system to minimize noise impact, allowing for integrated operation with the display panel and enhanced touch sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a touch panel is separately manufactured and attached to a display panel, then the touch panel can be independently optimized, but the device complexity increases and operational flexibility is limited
Solution Approach 1:
The patent combines the touch sensor layer with the display panel structure, integrating the touch functionality directly into the display device. This merging eliminates the need for separate manufacturing and attachment processes, reducing device complexity while maintaining the ability to optimize touch panel performance through integrated design.
Solution Approach 2:
The touch panel is designed to operate in multiple modes (electrostatic capacitive and electromagnetic induction) within a single integrated structure. This multi-functionality allows the same hardware to serve different touch sensing purposes without requiring separate manufacturing processes for different modes.
2Device complexity
If a single-mode touch panel is used, then the device structure is simpler, but the adaptability to different touch scenarios is reduced
Solution Approach 1:
The touch panel incorporates dual-mode functionality (electrostatic capacitive and electromagnetic induction sensing) within a single device structure. This allows the system to adapt to different touch scenarios and input types without requiring multiple separate touch panels, maintaining structural simplicity while enhancing versatility.
Solution Approach 2:
The system can dynamically switch between electrostatic capacitive and electromagnetic induction modes based on the touch scenario. This dynamic adaptability allows the same hardware to optimize its operation for different situations without requiring physical reconfiguration or multiple fixed-mode panels.
3Measurement precision
If noise reduction measures are added to improve touch sensitivity, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The patent uses the display panel's own structure and components to reduce noise interference rather than adding separate noise reduction devices. By leveraging existing elements (such as using the display panel layers as shielding or grounding structures), the system converts potential sources of interference into noise-reducing features, improving touch sensitivity without significantly increasing device complexity.
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
The dual-mode touch panel effectively reduces noise interference, improving touch sensitivity and allowing for flexible operation modes, thereby enhancing user interaction with the display device.
Implementation Method 1
The touch panel may be classified into a resistive film type of touch panel, a capacitive type of touch panel, and an electromagnetic type of touch panel depending on its operational principle
Implementation Method 2
a dual-mode touch sensing apparatus in accordance with the precharacterising portion of claim 1
Data Source
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AI summary
A display device includes a display panel and a touch panel. The touch panel calculates coordinate information of an input position by an electrostatic capacitive method in a first mode and calculates the coordinate information of the input position by an electromagnetic induction method in a second mode. The touch panel includes scan line groups and source line groups, which are operated as touch electrodes or touch coils on the basis of the operating mode thereof. In addition, the touch panel includes touch electrodes and touch coils, which are individually operated on the basis of the operating mode thereof.