Magnetic Head Common Side Shield Terminal for Dense Recording
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Solution Overview
Problem
Existing magnetic heads face challenges in achieving high recording density, precision, and cost-effectiveness due to complex wiring and large reproducing section sizes, which are exacerbated by the use of multiple independent terminals and conductors.
Innovation Solution
A magnetic head design with a common side shield terminal connected to each element, reducing the number of terminals and simplifying wiring, and utilizing conductive and insulating members to enhance signal detection through anomalous Hall effect, allowing for high-density information reproduction with improved precision and reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple independent terminals and conductors are used for each element, then signal detection precision can be improved, but device complexity and wiring complexity increase
Solution Approach 1:
The patent combines multiple independent terminals into a common terminal structure. Specifically, multiple side shields that would traditionally require separate terminals are instead connected to a shared terminal, reducing the total number of terminals and conductors while maintaining signal detection capability through the common electrical connection point.
Solution Approach 2:
The common terminal serves multiple functions simultaneously - it acts as an electrical connection for multiple side shields, provides a reference potential for signal detection, and reduces wiring complexity. This multi-functional design allows a single terminal structure to replace what would traditionally require multiple specialized terminals.
2Reliability
If multiple independent terminals are used for each element, then electrical connections can be optimized, but the reproducing section size increases
Solution Approach 1:
The patent merges multiple terminal structures into a compact common terminal arrangement. By consolidating the electrical connection points for multiple side shields into a shared terminal structure, the overall footprint of the reproducing section is reduced while maintaining all necessary electrical connections.
3Measurement precision
If complex wiring with multiple terminals is used, then signal detection accuracy can be enhanced, but manufacturing costs increase
Solution Approach 1:
The patent reduces manufacturing complexity by merging multiple terminal structures into a common terminal design. This consolidation reduces the number of fabrication steps, decreases material usage, and simplifies assembly processes, thereby lowering manufacturing costs while preserving signal detection accuracy through the optimized common terminal configuration.
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 proposed design enables high-precision, high-density information reproduction with simplified wiring, reduced size, and lower costs by minimizing terminal count and optimizing current flow directions for enhanced signal detection.
Implementation Method 1
utilizing conductive and insulating members to enhance signal detection through anomalous Hall effect
Data Source
AI summary
According to one embodiment, a magnetic head includes a first element, a second element, a first shield terminal, a first opposing shield terminal, a second shield terminal, a second opposing shield terminal, a first side shield terminal, a second side shield terminal, and a common side shield terminal. The first element includes a first shield, a first opposing shield, a first side shield, a first opposing side shield, and a first magnetic member. A direction from the first shield to the first opposing shield is along a first direction. The second element includes a second shield, a second opposing shield, a second side shield, a second opposing side shield, and a second magnetic member. A direction from the second shield to the second opposing shield or a direction from the second opposing shield to the second shield is along the first direction.