Magnetic Head Shield Terminal Layout for Dense Signal Reproduction
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Solution Overview
Problem
Existing magnetic heads face challenges in improving recording density, reproducibility, and reducing size and cost due to complex wiring and the need for multiple terminals.
Innovation Solution
A magnetic head design with a common side shield terminal connected to multiple elements, simplifying wiring and reducing the number of terminals, using conductive and insulating members to enhance signal detection through anomalous Hall effect, and integrating elements in series or parallel configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate shield terminals are used for each magnetic element, then signal detection precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple shield terminals (first side shield terminal, second side shield terminal, third side shield terminal) into a single common side shield terminal that serves all three magnetic elements (first, second, and third elements). This merging reduces the number of terminals and wiring connections while maintaining the shielding function for each element, thereby reducing device complexity and manufacturing cost while preserving signal detection precision.
2Measurement precision
If multiple separate shield terminals are used for each magnetic element, then signal detection precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple separate shield terminals into a single common side shield terminal that is shared by three magnetic elements. This reduction in the number of terminals directly reduces manufacturing cost by decreasing the number of connection points, wiring materials, and assembly steps required, while the shielding function is maintained for each element through the common terminal structure.
3Quantity of substance
If more magnetic elements are added to increase recording density, then information storage capacity is improved, but device size and complexity increase
Solution Approach 1:
The common side shield terminal serves multiple functions by providing shielding for three different magnetic elements (first, second, and third elements) simultaneously. This multi-functional design allows the device to increase information storage capacity by adding more magnetic elements without proportionally increasing terminal configuration complexity, as the common terminal handles shielding for all elements.
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 allows for high-precision reproduction of high-density information with reduced size and cost, while suppressing characteristic deterioration.
Implementation Method 1
using 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.