Mobile Terminal Dual-Side Display Input Control

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Solution Overview

Problem

The challenge is to effectively control input sensing on both sides of a mobile terminal with a foldable display to prevent false operations when the display is used on both the front and rear sides, particularly due to unintentional touch inputs during handling.

Innovation Solution

A mobile terminal design with a camera on one side and a controller that displays images acquired on both the front and rear display areas, allowing the controller to adjust the display based on the terminal's pose and usage pattern to prevent false inputs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a display is provided on both the front side and the rear side of the mobile terminal, then the usability and functionality of the device are improved, but false operations may occur due to unintentional touch inputs during handling

Engineering Contradiction:
Improvedisplay usage capabilityVSAvoidinput accuracy
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies dynamics by making the touch sensitivity of the display dynamic rather than static. The controller adjusts the touch sensitivity threshold based on the detected pose of the mobile terminal. When the terminal is in a pose where unintentional touches are likely (e.g., held in one hand), the touch sensitivity is reduced to prevent false inputs. When the terminal is in a pose where intentional touches are more certain (e.g., held with both hands), the touch sensitivity is increased to improve responsiveness. This dynamic adjustment resolves the contradiction between maintaining high usability and preventing false operations.

Inventive Principle:
Principle #15Dynamics

2Area of stationary object

If the display is folded or rolled to increase screen area, then the display size is improved, but the device complexity increases

Engineering Contradiction:
Improvedisplay areaVSAvoiddisplay structure
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent employs flexible shells and thin films by utilizing a flexible display that can be folded or rolled. The display is constructed with flexible materials that allow it to be deformed into different configurations (folded or rolled states) to increase the effective screen area when needed. This flexible structure enables the display to transition between compact and expanded states without requiring complex mechanical mechanisms, thereby increasing display area while managing device complexity through material flexibility rather than mechanical complexity.

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentEP4131909B1Mobile terminal for displaying image and control method therefor
Publication Date: 2024.12.18 LG ELECTRONICS INC
  • EP4131909B1 patent drawingFigure 1
  • EP4131909B1 patent drawingFigure 2(a)~2(b)
  • EP4131909B1 patent drawingFigure 3(a)~3(b)

AI summary

Disclosed is a mobile terminal including a display including a first area and a second area, wherein the first area is located at a first side of the mobile terminal and the second area is located at a second side facing the first side, a camera disposed on the second side, and a controller, wherein the controller is configured to display an image acquired through the camera in the first area and the second area.