Universal Mobile Phone Key Board Electrode Configuration
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Solution Overview
Problem
Existing mobile phone key structures are not compatible with different types of keys, requiring separate board designs for various customer needs, leading to increased development time and production costs.
Innovation Solution
A mobile phone key board design featuring a printed circuit board with a first, second, and third electrode configuration, where the second electrode is disposed around the first and extends tooth profile structures matching the third electrode, allowing compatibility with both high-cost dome keys and low-cost carbon granule keys without needing a new main board design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unitary key board design is used, then the design and production process is simple, but it cannot meet the requirements of different customers for different key types
Solution Approach 1:
The key board is designed with a universal electrode structure that can accommodate multiple key types (dome keys and carbon granule keys) through the same PCB layout. The electrode configuration with first, second, and third electrodes arranged in a specific pattern allows the board to work with different key mechanisms without requiring separate board designs for different customer needs.
2Reliability
If separate main board designs are created for different key types, then each design is optimized for its specific key type, but development time and production costs increase
Solution Approach 1:
A single main board design serves multiple key type requirements, eliminating the need to create separate optimized designs for dome keys and carbon granule keys. This universal approach maintains reliable key functionality while significantly reducing development time and avoiding redundant design efforts.
3Reliability
If separate main board designs are created for different key types, then each design is optimized for its specific key type, but production costs increase
Solution Approach 1:
The key board employs a universal electrode structure that can accommodate multiple key types (dome keys and carbon granule keys) through the same PCB layout. The electrode configuration with first, second, and third electrodes arranged in a specific pattern allows the board to work with different key mechanisms without requiring separate board designs for different customer needs.
Solution Approach 2:
The patent merges the functionality for different key types into a single main board design. By combining the electrode arrangements and PCB structure to support both dome keys and carbon granule keys, the solution eliminates the need for separate production lines and inventory management for different board types, thereby reducing production costs.
Data Source
AI summary
A key board of mobile phone applied in key circuit of mobile phone is provided. A first electrode, a second electrode and a third electrode are disposed on a printed circuit board (PCB), the second electrode is disposed around the first electrode in circular form, tooth profile structures disposed matched with the third electrode are extended from an outer side of the second electrode, the third electrode is connected with the first electrode, the setting can be applied to various types of keys. The key board of the mobile phone can not only be applied to the dome keys, but also the carbon granule keys. If customers need different designs of keys, the new keys are needed to be redesign, and a new main board is not necessary to design, which greatly saves development time and lowers the cost.