Telescopic Mobile Terminal Frame Design for Flat Outer Surface
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Solution Overview
Problem
Mobile terminals with flexible displays that extend in size face usability issues due to height differences on their outer surface, causing discomfort and potential distortion during slide movements, which affect portability and usability.
Innovation Solution
A mobile terminal design featuring frames that switch between extended and contracted states with a rear portion covering the display unit, incorporating a linear guide and a user input unit, and minimizing height differences through strategically placed surfaces and thickness variations, ensuring stable and distortion-free slide movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display is extended to increase screen size, then the display area is improved, but height difference occurs on the outer surface causing discomfort and potential distortion
Solution Approach 1:
The second frame is nested within the first frame in a telescopic configuration, allowing the display to extend and contract while maintaining a relatively flat outer surface. The nested structure enables the display area to vary without creating significant height differences on the outer surface, as the extending frame is contained within the outer frame boundaries.
Solution Approach 2:
The patent introduces a third dimension (depth/extension) to the frame structure to enable display area variation while maintaining outer surface flatness. By extending the second frame in the depth direction relative to the first frame, the display can change size without affecting the outer surface profile in the primary viewing dimensions.
2Device complexity
If the frame structure is simplified to improve portability, then device complexity is reduced, but stability during slide movement deteriorates
Solution Approach 1:
The frame structure employs a dynamic telescopic mechanism where the second frame can slide relative to the first frame along guide rails. This dynamic structure allows the display to transition between extended and contracted states while maintaining stability during movement through the guide rail constraints, rather than requiring a fixed complex structure.
Solution Approach 2:
The frame is segmented into a first frame and a second frame that can move independently relative to each other. This segmentation allows for a simpler overall structure where each frame portion is relatively simple, yet the combination provides stable slide movement through the guide rail mechanism.
3Adaptability or versatility
If the frame extends to provide larger display area, then adaptability is improved, but volume increases affecting portability
Solution Approach 1:
The display area is made dynamic through the telescopic frame mechanism, allowing the device to adapt between different display sizes. The volume remains relatively compact because the second frame slides within the first frame rather than requiring additional external space, enabling display adaptability without significant volume increase.
Data Source
AI summary
A mobile terminal including a first frame, and a second frame capable of switching a state thereof to an extended state by moving in a first direction from the first frame, and to a contracted state by sliding in a second direction opposite to the first direction, wherein the second frame includes a rear portion for at least partially covering a rear surface of the first frame, wherein the first frame includes a first rear surface exposed rearwardly in the contracted state, a second rear surface located frontwardly of the rear portion and not exposed to the outside in the contracted state, wherein at least a portion of the second rear surface is exposed rearwardly in the extended state, and a third rear surface covered by the rear portion in the contracted state and in the extended state.


