Multi-Surface Capacitive Touch Layout for Versatile Gesture Sensing
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Solution Overview
Problem
Existing touch-sensitive electronic devices are limited in their ability to effectively support multi-phase touch-sensing, which is essential for enhancing interactive functions and user experience, particularly in portable devices where multiple touch-sensing surfaces are needed for diverse operations.
Innovation Solution
A touch-sensitive electronic device with multiple touch-sensing surfaces, each equipped with sensing electrodes and a controller that generates control signals in response to touch operations, allowing for differentiated sensing operations across the surfaces, and utilizing a flexible substrate to accommodate various configurations and orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple touch-sensing surfaces are added to enhance interactive functions, then the versatility and user experience are improved, but the device complexity and structural difficulty increase
Solution Approach 1:
The device is segmented into multiple independent touch-sensing surfaces (first, second, and third surfaces) that can be configured separately. Each surface has its own sensing electrode array that can be independently controlled by the controller, allowing different interaction modes on different surfaces while maintaining modular complexity management
Solution Approach 2:
The controller is designed to universally control multiple touch-sensing surfaces with different configurations. The same controller can handle various sensing operations across different surfaces, and the sensing electrode arrays can be configured for different sensing types (contactless, contact, proximity), providing multi-functionality without requiring separate control systems for each surface
2Measurement precision
If different sensing electrode array configurations are used for different surfaces, then the sensing operation precision and functionality are improved, but the manufacturing complexity increases
Solution Approach 1:
Each touch-sensing surface is equipped with sensing electrode arrays configured according to its specific sensing requirements. For example, contactless sensing surfaces use different electrode configurations compared to contact sensing surfaces, optimizing measurement precision for each local application while maintaining overall system integration
Solution Approach 2:
The sensing electrode arrays can be configured with different parameters (such as electrode spacing, size, and arrangement) depending on the sensing operation requirements for each surface. This allows optimization of sensing precision for different applications while using the same basic sensing technology platform, reducing manufacturing complexity through parameter variation rather than structural redesign
3Adaptability or versatility
If flexible substrate is used to accommodate various configurations, then the adaptability and orientation flexibility are improved, but the manufacturing precision and reliability challenges increase
Solution Approach 1:
The use of flexible substrate allows the touch-sensing surfaces to be dynamically configured in different orientations and positions within the device housing. The flexible nature enables adaptation to various device form factors and mounting configurations while maintaining consistent sensing performance through the controller's ability to manage different electrode array configurations
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
Enables advanced multi-phase touch-sensing capabilities, allowing for more intuitive and versatile user interactions, including non-contact sensing, and enhances the functionality of devices by integrating touch-sensing operations across multiple surfaces, reducing the need for physical buttons and improving user experience.
Implementation Method 1
a plurality of sensing electrodes formed on the same substrate, and having capacitance changes in response to touch operations or gestures respectively performed on or over the first touch-sensing surface, the second touch-sensing surface and the third touch-sensing surface
Data Source
AI summary
A touch-sensing electronic device includes a housing having first, second and third touch-sensing surfaces; a substrate extensively disposed under the first, second and third touch-sensing surfaces; sensing electrodes formed on the same substrate, and having capacitance changes in response to touch operations or gestures respectively performed on or over the first, second and third touch-sensing surfaces, wherein the sensing electrodes are grouped into three sensing electrode arrays corresponding to the first, second and third touch-sensing surfaces, respectively; and a controller for generating respective control signals corresponding to the touch operations performed on or over the first, second and third touch-sensing surfaces. At least two of the three sensing electrode arrays have different configurations for performing different sensing operations.