Flexible Touch Sensor Disambiguation via Lateral Modifier Movement
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Solution Overview
Problem
Current touch-sensitive displays face challenges in distinguishing between object touch and apparatus flexing, leading to ambiguous sensing outcomes due to the lack of effective methods to differentiate between these two conditions.
Innovation Solution
The apparatus incorporates a flexible substrate with distinct sensors and a modifier layer that moves laterally relative to the sensors upon flexing, allowing for the differentiation between touch and flexing events by modifying sensing outputs through electrical connectivity changes and processing algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of sensors are distributed over a sensing area to detect touch, then touch sensing capability is improved, but the ability to distinguish between touch and flexing deteriorates
Solution Approach 1:
The sensing system is segmented into multiple independent sensor elements distributed across the sensing area. Each sensor provides individual measurements that are processed collectively to distinguish between touch and flexing events through pattern recognition and differential analysis.
Solution Approach 2:
A modifier layer is introduced as an intermediary element between the flexible substrate and the sensors. This modifier comprises a perimeter structure that moves laterally relative to the sensors when the apparatus flexes, creating distinct sensing patterns that enable differentiation between flexing and touch events.
2Adaptability or versatility
If the apparatus is made flexible to enable bending, then adaptability is improved, but sensing accuracy deteriorates due to flexing-induced signal changes
Solution Approach 1:
The system dynamically adapts its sensing mode based on detected flexing. When flexing is detected through the modifier's lateral movement, the system switches from standard touch sensing mode to flex-compensated mode, adjusting signal processing to maintain accuracy despite the flexible substrate's deformation.
Solution Approach 2:
The modifier's lateral movement in response to flexing provides feedback information about the flexing state. This feedback is used to adjust the sensing interpretation, allowing the system to compensate for flexing-induced signal changes and maintain sensing accuracy in the flexible state.
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 solution enables accurate disambiguation between touch and flexing events, enhancing the reliability of touch-sensitive displays by modifying sensing parameters in response to flexing, thereby improving user interaction and system accuracy.
Implementation Method 1
a plurality of distinct sensors configured to sense over a sensing area
Data Source
AI summary
An apparatus including in a first laterally extending layer, a flexible substrate; in a second laterally extending layer, a plurality of distinct sensors configured to sense over a sensing area; in a third laterally extending layer, a modifier including a perimeter, wherein the apparatus is configured to enable, responsive to flexing of the flexible substrate, lateral movement of the perimeter of the modifier relative to the plurality of distinct sensors to modify sensing by one or more of the distinct sensors.