Touch Screen Magnetic Dipole Tactile Feedback
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Solution Overview
Problem
Current touch screen technologies rely on vibration for tactile feedback, which can be uncomfortable for users and fail to provide localized, realistic feedback, as vibrations are not confined to the point of contact.
Innovation Solution
A touch screen system utilizing magnetic forces to provide tactile feedback through a magnetic dipole interaction between a first magnetic part, typically a coil, and a second magnetic part, such as a permanent magnet, allowing for localized attractive, repulsive, or vibrational feedback at the contact point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If vibration components are used to provide tactile feedback, then tactile feedback can be transmitted to the user, but the vibration is not localized to the contact point and occurs throughout the device
Solution Approach 1:
The device divides the tactile feedback function into multiple independent vibration actuators positioned at different locations. Each actuator can be controlled independently to generate vibration at a specific contact point, rather than using a single vibration source that affects the entire device.
Solution Approach 2:
The system implements localized tactile feedback by activating only the vibration actuator at or near the contact point. This ensures that vibration is generated precisely where needed, providing realistic tactile feedback without causing unnecessary vibration throughout the entire device.
2Device complexity
If a simple vibrating device is used to provide tactile feedback, then the device complexity is reduced, but the tactile feedback lacks realism and localization
Solution Approach 1:
Instead of using a single complex vibration mechanism, the system employs multiple simpler vibration actuators distributed across the device. Each actuator is a relatively simple component, but their coordinated operation achieves realistic and localized tactile feedback that would be difficult to accomplish with a single complex mechanism.
3Quantity of substance
If vibration occurs throughout the portable terminal, then tactile feedback is transmitted, but the feedback pattern is uniform and not localized to the pressed point
Solution Approach 1:
The vibration feedback system is segmented into multiple independent actuators, each capable of being activated independently. This allows the system to generate vibration only at the contact point rather than uniformly across the entire device, achieving precise localization while maintaining adequate vibration coverage at the relevant location.
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 magnetic feedback system enables a more realistic and comfortable tactile experience by providing localized forces, enhancing user interaction with touch screens by allowing for precise control of tactile feedback at the contact position.
Implementation Method 1
a magnetic part, and a controller controlling the magnetic part to move, wherein the controller controls the magnetic part to approach the contact position and provide magnetic force to a finger
Data Source
AI summary
Provided are a touch screen and a method of operating the same. The touch screen includes a detecting part, a control part, and a tactile feedback part. The detecting part detects object's approach or contact. The control part receives a signal of the detecting part to output a feedback signal. The tactile feedback part receives the feedback signal of the control part to provide a tactile feedback to a contact position using a magnetic force. The tactile feedback uses the magnetic force of a magnetic dipole.