Deformable Touch Screen With Piezoelectric Haptic Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional touch screens lack tactile feedback, forcing drivers to take their eyes off the road to operate vehicle functions, increasing the risk of accidents.
Innovation Solution
A deformable touch screen that uses a dielectric material with electrodes and a signal generator to create a 3D interface based on capacitance changes, providing tactile feedback and minimizing eye diversion by transforming buttons into 3D forms when touched.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a conventional touch screen interface is used to control vehicle functions, then the user interface can transmit a large amount of information to the user, but the user must take their eyes off the road to operate the interface, increasing the risk of accidents
Solution Approach 1:
The patent applies tactile feedback by generating vibrations through a piezoelectric element when the user touches the screen. This haptic feedback provides physical confirmation of touch input, allowing drivers to operate the interface with tactile sensation rather than visual confirmation, thereby keeping eyes on the road while maintaining full control capability
Solution Approach 2:
The patent uses mechanical vibration generated by a piezoelectric element to provide tactile feedback. When voltage is applied to the piezoelectric element, it expands and contracts, creating vibrations that the user can feel through the touch screen surface, enabling operation without visual attention
2Ease of manufacture
If a conventional touch screen without tactile feedback is used, then the interface can provide a flexible esthetic appearance, but the user experiences increased operation time and eye diversion frequency
Solution Approach 1:
The patent implements immediate tactile feedback through vibration when the user touches the screen. This instantaneous physical response confirms successful input registration, eliminating the need for visual verification and reducing operation time while preserving the flexible esthetic design
3Adaptability or versatility
If a full touch screen approach is used to control all vehicle functions, then the interface provides comprehensive control capability, but the frequency of eye diversion becomes unacceptably high
Solution Approach 1:
The patent applies tactile feedback across the full touch screen interface, enabling all vehicle control functions to provide haptic confirmation. This allows comprehensive control capability while maintaining driving safety by eliminating the need for visual verification of any control input
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
Reduces the risk of car accidents by allowing drivers to maintain their focus on the road while using touch screens for vehicle control functions, enhancing driver convenience and reducing operation time.
Implementation Method 1
a piezoelectric element that generates vibrations by expanding and contracting when a voltage is applied
Implementation Method 2
a signal generator for providing a signal to the voltage controller, wherein the signal generator generates a signal for making a user interface button of the display unit into a 3D form according to a measured result of an increase or a decrease in mutual capacitance between a user's hand and an outer conductive metal
Data Source
AI summary
The present disclosure provides a deformable touch screen including a display unit for displaying a user interface; a touch panel including a dielectric material, a first electrode coated on one end of the dielectric material, a second electrode coated on the other end of the dielectric material, a non-conductive material coated on the second electrode, and a conductive metal coated on the coated non-conductive material; a voltage controller for controlling a voltage applied between the first electrode and the second electrode; and a signal generator for applying a signal to the voltage controller, wherein the signal generator generates a signal for making a user interface button of the display unit into a 3D form according to a measured result of an increase or a decrease in mutual capacitance of a user's hand and a conductive metal.