Rotating Display Case for Cellular Phone Keyboard
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Solution Overview
Problem
Prior cellular phones with full keyboards for character input are cumbersome and costly due to the need for two display sections, increasing production costs and reducing portability.
Innovation Solution
A cellular phone with a three-stage stacked structure featuring a display case, keyboard case, and dial/key case, where the display case rotates to expose the keyboard and the dial/key case slides to expose the dial or ten key, allowing for efficient character input without requiring two display sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cellular phone is equipped with both a full keyboard and a large-sized display to enable easy character input and internet access, then operability for e-mail and internet is improved, but production costs are greatly increased due to requiring two display sections
Solution Approach 1:
The display case is made rotatable relative to the keyboard case, allowing the display to dynamically change its orientation and position. This enables a single display to serve multiple functions by repositioning itself, eliminating the need for separate dedicated displays for different modes of operation.
Solution Approach 2:
A single liquid crystal display unit is designed to perform multiple functions by rotating to different positions. The display serves as both a viewing screen for internet/e-mail and integrates with the keyboard area, replacing the need for separate dedicated display sections for different operational modes.
2Adaptability or versatility
If a cellular phone includes a full keyboard and large-sized display located on symmetrical areas, then access to e-mail and internet is improved, but the device becomes cumbersome and portability is reduced
Solution Approach 1:
The display case is nested within the rotatable assembly that can be positioned in different configurations. The keyboard case and display case are integrated in a nested manner where the display can rotate to overlay or integrate with the keyboard area, reducing the overall spatial footprint and device bulk.
Solution Approach 2:
The display case rotates around a shaft to change its spatial dimension and orientation. This rotational movement in three-dimensional space allows the display to access different functional zones without requiring additional flat surface area, reducing device width and improving portability.
3Device complexity
If character input is enabled through repeated key depression on a ten key, then device simplicity is maintained, but input time and operational efficiency are greatly increased
Solution Approach 1:
The keyboard is segmented into individual key areas with each key corresponding to a specific character or symbol. This segmentation allows direct one-to-one mapping between key presses and character output, eliminating the need for repeated key depression and multi-stage selection processes.
Data Source
AI summary
A cellular phone has a three-stage stacked structure including a ten-key case of a lower stage, a full-key case of a middle stage and a display case of an upper stage. When the cellular phone is in call style, the ten-key case is slid in the longitudinal direction to expose a dial key. When the cellular phone is in keyboard style, the display case is turned on its rotating shaft above the full-key case to expose a full keyboard. The rotating shaft is located in the middle of the display case and close to a long side thereof.