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

VSEngineering 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

Engineering Contradiction:
Improvefunctional capabilitiesVSAvoidtouch sensor structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

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

Inventive Principle:
Principle #1Segmentation

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

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Engineering Contradiction:
Improvefunctional capabilitiesVSAvoiddisplay area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

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

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Engineering Contradiction:
Improveinteraction efficiencyVSAvoidtouch sensor system
Core Design Contradiction:
ProductivityVSDevice complexity

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

Inventive Principle:
Principle #1Segmentation

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

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11334239B2Mobile terminal having dual touch screen and method of controlling content therein
Publication Date: 2022.05.17 SAMSUNG ELECTRONICS CO LTD
  • US11334239B2 patent drawing
  • US11334239B2 patent drawing
  • US11334239B2 patent drawing

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.