Dual Touch Panel Driving Unit with Shared Ports
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Solution Overview
Problem
Conventional touch apparatuses with two touch panels require increased space and material costs due to the duplication of electronic components, making them less efficient and more expensive compared to single-touch panel systems.
Innovation Solution
A touch apparatus with two touch panels that uses a single driving unit, a connecting circuit board, and a difference generating unit to share driving and sensing ports, allowing for the control and operation of both panels with reduced component space and material requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional touch apparatus uses two separate driving units for two touch panels, then each panel can be controlled independently, but the space for accommodating electronic components and material costs increase significantly
Solution Approach 1:
The patent merges two separate driving units into a single integrated driving unit that can control both touch panels. The driving unit includes a driving element with multiple driving ports that are electrically connected to both first and second touch panels, allowing independent control of each panel while reducing the total number of components and space required
Solution Approach 2:
The single driving unit is designed with multi-functionality to control multiple touch panels. The driving element can output driving signals through multiple driving ports simultaneously, and the sensing element can receive sensing signals from both panels, making one driving unit serve multiple functions that previously required separate units
2Device complexity
If a touch apparatus shares driving and sensing ports between two touch panels, then component space and material costs are reduced, but signal interference and touch position determination accuracy may be affected
Solution Approach 1:
The driving element is segmented into multiple driving ports, and the sensing element is segmented into multiple sensing ports. This segmentation allows the single driving unit to independently control and sense signals from different touch panels, preventing signal interference while maintaining accuracy in touch position determination
Solution Approach 2:
The patent introduces a difference generating unit as an intermediary component that processes sensing signals from both touch panels. This intermediary unit helps distinguish and differentiate signals from each panel, ensuring accurate touch position determination even when sharing common driving and sensing ports
Data Source
AI summary
A touch apparatus includes a driving unit, a first touch panel, a second touch panel and a connecting circuit board coupling between the first and second touch panels. The driving unit has a driving element which has at least one driving port for outputting a plurality of driving signals and at least one sensing port for receiving a plurality of sensing signals. The first touch panel is coupled with the driving element. The second touch panel is disposed adjacent to the first touch panel, and is coupled with the driving element via the first touch panel. The first touch panel and the second touch panel are coupled jointly with at least one of the driving port and the sensing port. A driving method of the touch apparatus is also disclosed.