Display Sensor Layer Segmentation for Low-Interference Touch Accuracy
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Solution Overview
Problem
Existing electronic devices face challenges in achieving reliable touch sensitivity and accuracy in touch-based input methods due to interference and signal noise, particularly in multimedia devices with complex display and sensor layers.
Innovation Solution
The electronic device incorporates a sensor layer with a defined sensing area comprising specific electrode configurations, including first and second areas with insulated electrode crossings, sub-lines, and a guard electrode, connected to a sensor driver for improved signal integrity and touch reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sensor layer with simple electrode configuration is used, then the device complexity is low, but the touch reliability and signal accuracy deteriorate due to interference and noise
Solution Approach 1:
The sensing area is divided into multiple discrete sensing regions (first sensing area, second sensing area, third sensing area) with distinct electrode configurations. Each region has specific first electrodes and second electrodes arranged to detect touches in different zones, allowing independent optimization of touch detection for each area while reducing overall interference through spatial separation
Solution Approach 2:
Different electrode configurations are applied to different regions of the sensor layer. The first sensing area has a specific arrangement of first electrodes and second electrodes, while the second sensing area has a different arrangement, and the third sensing area has yet another configuration. This local optimization ensures that each region is best suited for its specific detection requirements, improving overall touch reliability without requiring uniform complexity across the entire device
2Measurement precision
If electrodes are arranged to improve touch detection accuracy, then the measurement precision improves, but the device complexity increases due to multiple electrode types and configurations
Solution Approach 1:
The electrode system is segmented into first electrodes and second electrodes that are insulated from each other and arranged in different patterns across different sensing areas. This segmentation allows each electrode type to be optimized for specific detection functions, improving measurement precision while the modular structure helps manage complexity through systematic organization
Solution Approach 2:
The patent introduces a multi-dimensional electrode arrangement where first electrodes and second electrodes are positioned at different spatial locations and orientations within the sensor layer. This dimensional arrangement enables sophisticated touch detection capabilities by analyzing signals from multiple spatial perspectives, thereby improving measurement precision through spatial differentiation
3Adaptability or versatility
If multiple sensing areas with different electrode configurations are implemented, then the adaptability for different touch scenarios improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The sensor layer is segmented into distinct sensing areas (first, second, and third sensing areas) with different electrode configurations optimized for different touch scenarios. This segmentation provides adaptability for various touch inputs while using standardized manufacturing processes for each segment, balancing versatility with manufacturability
Solution Approach 2:
The sensor layer is designed with multiple sensing areas that can handle different touch scenarios (single touch, multi-touch, different finger sizes) using a unified sensor layer structure. This multi-functional design achieves adaptability without requiring separate sensor layers for different functions, thereby maintaining ease of manufacture through a single integrated manufacturing process
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 enhances touch reliability by reducing interference and improving signal accuracy, ensuring precise and reliable touch-based input in multimedia devices.
Implementation Method 1
a first sensing area in which a plurality of first electrodes and a plurality of second electrodes are respectively arranged, each of the plurality of first electrodes and each of the plurality of second electrodes crossing one another while being insulated from one another, and a second sensing area in which the plurality of first electrodes and the plurality of second electrodes are respectively arranged
Data Source
AI summary
An electronic device includes a display layer, a sensor layer in which a sensing area including a first area and a second area spaced apart from the first area in a first direction are defined, and a sensor driver. The sensor layer includes a plurality of first-first electrodes, a plurality of second-first electrodes, a plurality of first-second electrodes, a plurality of second-second electrodes, a plurality of first lines, and a plurality of second lines. The plurality of first lines include a first sub-line connected with one of the plurality of first-first electrodes and one of the plurality of first-second electrodes and a second sub-line connected with another one of the plurality of first-first electrodes or another one of the plurality of first-second electrodes.