Dual Touch Screen Mobile Terminal Rear Interaction Control
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Solution Overview
Problem
Traditional touch screens in terminal devices have limited functionality due to their single-sided touch event detection, which restricts the effective use of the display area and hinders the addition of greater functional capabilities in smaller form factors.
Innovation Solution
Implementing a dual touch screen system with touch sensors on both the front and rear sides of the display unit, allowing for the detection of touch events from multiple sides and enabling advanced control methods such as content manipulation, zooming, rotating, and size changes through coordinated touch inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single touch sensor is used on one side of the display unit, then the device structure remains simple, but the functional capabilities are limited and the display area cannot be effectively utilized
Solution Approach 1:
The touch sensing function is segmented into two independent touch sensors positioned on opposite sides of the display unit. Each touch sensor can independently detect touch events, allowing the system to differentiate between front-side and rear-side interactions, thereby expanding functional capabilities while maintaining manageable structural complexity
Solution Approach 2:
The touch sensing capability is extended from a single-sided (one-dimensional) approach to a dual-sided (two-dimensional) approach by placing touch sensors on both the front and rear surfaces of the display unit. This spatial expansion enables new interaction modes such as simultaneous dual-sided touch recognition and enhanced gesture control
2Adaptability or versatility
If the display area is increased to provide more functional buttons, then the functional capabilities are enhanced, but the device form factor increases
Solution Approach 1:
The interaction interface is extended from a single-plane to a dual-plane configuration by implementing touch sensors on both sides of the display. This allows functional buttons and controls to be distributed across both surfaces, effectively increasing the available control area without expanding the device's footprint in three-dimensional space
3Productivity
If a dual touch screen system is implemented with touch sensors on both sides, then the functional capabilities and interaction efficiency are enhanced, but the device complexity increases
Solution Approach 1:
The touch sensor system is divided into two independent sensing units on opposite sides of the display, each capable of autonomous touch event detection. This segmentation allows the system to process front-side and rear-side interactions separately, improving interaction efficiency while managing complexity through modular architecture
Solution Approach 2:
The dual touch sensor system provides multiple functions including simultaneous touch detection on both sides, enhanced gesture recognition, and versatile content control capabilities. This multi-functionality justifies the increased complexity by delivering superior interaction efficiency and user experience across diverse application scenarios
Data Source
AI summary
A terminal device having a dual touch screen capable of controlling a content is disclosed. The terminal device displays at least one content to a display unit. A processor coupled to the terminal is configured to checking content mapped to an area at which a touch event is detected and released from the dual touch screen including a first touch sensor and a second touch sensor and to control the content according to the touch event.


