Interleaved Scroll Sensors for Seamless Multi-Function Control
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Solution Overview
Problem
Conventional scroll sensors on electronic devices can only perform a single function at a time, requiring function selection steps, and cannot seamlessly transition between multiple functions without multiple sensors that are either touching or intersecting, which complicates user interaction and aesthetics.
Innovation Solution
A touch input device with interleaved scroll sensors, such as linear strip or rotary ring sensors, that share a common interaction zone, allowing smooth scrolling across the surface by measuring voltage changes on a sense line to determine touch position and map it to X-Y coordinates, enabling simultaneous multiple function control without explicit function selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple scroll sensors are provided to enable simultaneous multiple functions, then functionality and user interaction are improved, but device complexity and aesthetic unity deteriorate
Solution Approach 1:
The patent merges multiple scroll sensors into a single unified sensor structure by interleaving their conductive elements (first and second finger traces) within a common interaction zone. This allows multiple scroll sensors to occupy the same physical space, enabling simultaneous multiple functions while maintaining aesthetic unity and avoiding the need for separate, visible sensor components.
Solution Approach 2:
The patent transitions from a single-plane sensor design to a multi-layered interleaved structure. By stacking multiple sets of finger traces at different positions within the same interaction zone and using a flexible conductive layer to establish electrical connections, the patent adds a vertical dimension to the sensor design, allowing multiple functions to coexist in a compact footprint.
2Adaptability or versatility
If multiple scroll sensors are provided to enable simultaneous multiple functions, then functionality is improved, but visual appearance and unity deteriorate
Solution Approach 1:
The patent merges multiple scroll sensors into a single unified sensor structure by interleaving their conductive elements (first and second finger traces) within a common interaction zone. This allows multiple scroll sensors to occupy the same physical space, enabling simultaneous multiple functions while maintaining aesthetic unity and avoiding the need for separate, visible sensor components.
3Device complexity
If a single scroll sensor performs multiple functions sequentially, then device simplicity is maintained, but user interaction efficiency deteriorates
Solution Approach 1:
The patent implements a universal scroll sensor design where a single sensor structure with interleaved conductive elements can perform multiple functions simultaneously. The flexible conductive layer can establish electrical connections with different combinations of finger traces based on touch position, enabling the sensor to adapt to different input modes (single-scroll, dual-scroll, cross-scroll) without requiring function selection steps.
Solution Approach 2:
The patent introduces dynamic reconfigurability to the scroll sensor through the flexible conductive layer. The electrical connectivity between the conductive layer and different finger trace combinations changes dynamically based on the user's touch position and pressure, allowing the sensor to automatically switch between different functional modes without explicit user intervention or function selection steps.
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 intuitive, seamless control of multiple functions on electronic devices by allowing smooth transitions between scroll sensors, enhancing user interaction and maintaining a unified aesthetic appearance.
Implementation Method 1
Pressure applied to either substrate causes the conductive sense layer to contact and electrically connect the sense finger traces to at least one of the first and second finger traces thus permitting the position of the applied pressure to be determined
Implementation Method 2
a first pair of drive lines electrically connected to respective ends of the first resistor for applying a voltage across the first resistor, and a second pair of drive lines electrically connected to respective ends of the second resistor for applying a voltage across the second resistor
Implementation Method 3
each first finger trace carries a voltage corresponding to a voltage applied across the resistor and the position of the first finger trace across the first resistor
Data Source
AI summary
A touch input device includes two or more interleaved scroll sensors. A common area is interposed between two of the scroll sensors. A sense line snakes through the common area. Scrolling pressure applied to a sense layer causes the sense layer to contact and electrically connect the sense line to the scroll sensors thereby permitting the scrolling pressure position to be determined by measuring a voltage on the sense line. The scroll sensors are potentiometric and may be linear strip scroll sensors or rotary ring scroll sensors. The interleaved scroll sensors with the common area allow smooth scrolling action from one major leg to another major leg.