Touch Panel Switch Grouping to Reduce Controller Power
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Solution Overview
Problem
Existing touch screens face high power consumption issues due to the increasing number of sensing points and the corresponding data processing requirements for the touch controller.
Innovation Solution
A touch panel design that includes a touch layer with spaced-apart touch units and a wiring layer with touch lines connected via switches, allowing at least two touch units to transmit the same signal to the touch controller when the switch is turned on, thereby neutralizing signals and reducing the number of signals processed by the touch controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of sensing points is increased to improve touch recognition accuracy, then the measurement precision is improved, but the power consumption of the touch controller increases
Solution Approach 1:
The patent merges multiple touch units into touch groups by connecting them through switches to the same touch line. When switches are turned on, multiple touch units are electrically connected and share a common signal transmission path, allowing them to be processed as a single signal unit by the touch controller, thereby reducing the number of individual signals that need to be processed and reducing power consumption while maintaining touch recognition capability
2Measurement precision
If the number of sensing points is increased to improve touch recognition accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple touch units into grouped structures where multiple sensing points share common signal transmission paths through switched connections. This merging reduces the number of independent signal channels that the touch controller must manage, simplifying the controller's processing burden while preserving the ability to detect touches at multiple locations with sufficient accuracy
Data Source
AI summary
A touch panel, a driving method thereof and an electronic terminal are provided. The touch panel includes a touch controller, a touch layer and a wiring layer. The touch layer includes a plurality of touch units that are spaced apart. The wiring layer includes a plurality of touch lines connected between the touch controller and the plurality of touch units, and a plurality of switches each connected to two corresponding touch lines such that when the switch is turned on, at least two corresponding touch units form a same touch area to transmit a touch signal to the touch controller.