Sliding Mobile Terminal Frame for Flat Rollable Display Support
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Solution Overview
Problem
Mobile terminals with flexible displays face challenges in maintaining a stable extended display without deflection and minimizing the displacement of the center of gravity, leading to usability issues and increased exposure of internal components.
Innovation Solution
A mobile terminal design featuring a first and second frame that slide relative to each other, with a drive unit, a flexible display unit, and a battery distribution that maintains a flat state and distributes weight evenly, minimizing the exposure of components and center of gravity displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display unit is extended in the first direction to increase screen size, then the display area is improved, but the extended display unit may deflect and fail to maintain a flat state
Solution Approach 1:
The display unit is divided into a fixed part coupled to the first frame and a variable part that can be extended. The variable part is enclosed by the second frame when extended, creating segmented structural support that prevents deflection while allowing display area expansion.
Solution Approach 2:
The second frame acts as an intermediary structural element that encloses the variable part of the display unit when extended. This intermediary frame provides the necessary support to maintain the flat state of the extended display while allowing it to extend beyond the first frame.
2Area of stationary object
If the second frame is moved to extend the display, then the display size is increased, but the center of gravity displaces and causes inclination to one side
Solution Approach 1:
The battery is installed in the second frame and moved together with it during extension. This moving weight acts as a counterbalance that compensates for the displacement of the center of gravity, preventing inclination to one side and maintaining usability during the extended state.
3Area of stationary object
If the second frame is moved to extend the display, then the display area is increased, but internal components become exposed to foreign materials
Solution Approach 1:
The second frame serves as a protective intermediary structure that encloses the variable part of the display unit and protects internal components when the display is extended. This intermediary frame prevents foreign materials from accessing exposed components while allowing the display to extend.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design ensures a stable extended display without deflection, reduces foreign material ingress, and enhances usability by minimizing height differences and center of gravity shifts, allowing for stable and convenient use in the extended state.
Implementation Method 1
a drive unit switching the mobile terminal to an extended state or a contracted state by moving the second frame against the first frame
Implementation Method 2
a pinion gear coupled to the drive motor to rotate, and a rack gear coupled to the first frame to make a rectilinear motion in the first direction or the second direction by receiving a drive force of the pinion gear
Data Source
AI summary
Disclosed is a mobile terminal varying in size, including a first frame, a second frame moving against the first frame in a first direction or a second direction reverse to the first direction, a drive unit switching the mobile terminal to an extended state or a contracted state by moving the second frame against the first frame in the first direction or the second direction, a display unit including a fixed part coupled to a front side of the first frame and a variable part extended in the first direction of the fixed part and bent to a backside by enclosing the second frame, a main board installed in the first frame, and a battery installed in the second frame to move together with the second frame.