Rollable Mobile Terminal With Counterbalanced Display Expansion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rollable mobile terminals face the challenge of departing from a user's hand during display extension due to a change in center of gravity, necessitating a new method to maintain stability and user convenience.
Innovation Solution
A mobile terminal with a flexible display and a sensing unit that adjusts the size of the display based on user input signals, such as touch or force, to maintain a constant total display area and prevent departure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display is extended from the body, then the display size increases, but the center of gravity changes causing the terminal to depart from the user's hand
Solution Approach 1:
The patent applies the counterweight principle by using the second display on the rear face as a compensating mass. When the first display extends forward, the second display on the rear face is reduced in size, creating a counterbalancing effect that offsets the shift in center of gravity and prevents the terminal from departing the user's hand.
Solution Approach 2:
The patent changes the parameter of display area dynamically. The total area of the flexible display remains constant, but the area distribution between the first display (front) and second display (rear) is adjusted in real-time. As the first display area increases during extension, the second display area decreases correspondingly, maintaining overall balance.
2Area of moving object
If the display is extended manually, then the display size increases, but the operation becomes complex and less convenient
Solution Approach 1:
The patent implements self-service by enabling the display extension through intuitive touch gestures on the display itself. Users can directly interact with the display surface using touch or force inputs to extend or reduce the display, eliminating the need for separate physical buttons or complex control mechanisms.
Solution Approach 2:
The patent replaces traditional mechanical control systems (physical buttons, switches) with a sensing unit that detects touch and force inputs. This substitution allows for more intuitive and seamless control of display extension, enhancing ease of operation.
3Ease of operation
If a physical key is used for extension, then the control is simple, but the center of gravity change causes departure from hand
Solution Approach 1:
The patent uses the second display on the rear face as a counterweight mechanism. When extension is triggered (regardless of input method), the second display area is reduced to compensate for the forward shift in center of gravity, preventing terminal departure from the user's hand.
Solution Approach 2:
The patent dynamically adjusts the area parameters of both displays in response to extension commands. The total area remains constant while the distribution changes, allowing simple control input to achieve both extension and stability maintenance.
Data Source
AI summary
The present specification provides a mobile terminal in which a display unit can expand, and a control method therefor. In the mobile terminal of the present invention, when an input signal detected by a sensing unit is equal to or larger than a threshold value, an operation that expands or contracts the display unit according to a touch drag direction is performed, thus allowing a user to intuitively control the mobile terminal. Further, there is an advantage in that the mobile terminal can be prevented from being dislodged from the user's hand while the display unit is in the process of expanding.