Virtual Button Assembly With Piezoelectric Localized Haptic Feedback
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Solution Overview
Problem
Current physical buttons in electronic devices provide insufficient tactile feedback and monotonous vibration responses, affecting user experience.
Innovation Solution
A virtual button structure comprising a housing, a pressing member, a sensor, a spacer, a substrate, and a piezoelectric sheet, where the sensor detects the pressing state and the piezoelectric sheet generates localized vibrations to enhance feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional dome switch structures are used, then the button structure is simple, but the tactile feedback is insufficient and vibration response is monotonous
Solution Approach 1:
The patent combines multiple functional components (sensor, piezoelectric sheet, substrate, spacer) into an integrated button assembly that delivers both tactile feedback and vibration functions through a single unified structure, resolving the contradiction between feedback quality and structural complexity
Solution Approach 2:
The patent introduces a piezoelectric sheet that generates mechanical vibrations in response to pressing actions, transforming the单调 vibration response into a rich tactile experience with varied vibration patterns, frequencies, and intensities that enhance ease of operation
2Adaptability or versatility
If a single vibration response is used for all scenarios, then the control logic is simple, but the user experience is insufficient for specialized scenarios
Solution Approach 1:
The patent implements dynamic vibration characteristics where the vibration parameters (frequency, intensity, duration) can be adjusted based on different pressing scenarios, allowing the button to adapt to various user needs without requiring complex control systems
Solution Approach 2:
The patent utilizes variable vibration parameters (frequency, amplitude, duration) generated by the piezoelectric sheet to provide differentiated feedback for different scenarios, achieving scenario-specific adaptability through parameter modulation rather than complex control logic
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 solution provides improved tactile feedback and varied vibration sensations, enhancing user experience by offering specialized responses for different scenarios.
Implementation Method 1
a piezoelectric sheet provided on a side of the substrate back away from the spacer, and the piezoelectric sheet is configured to generate a vibration according to the pressing state of the pressing member and transmit the vibration to the pressing member
Data Source
AI summary
The present application provides an electronic device, including a housing provided with a hole and a virtual button structure provided within the housing. A pressing member of the virtual button structure is accommodated within the housing and partially exposed out of the housing through the hole. The virtual button structure further includes a sensor, a spacer, a substrate, and a piezoelectric sheet stacked within the housing. The sensor is connected to the pressing member, the substrate is provided on a side of the sensor and forms a vibration gap with the sensor, and the spacer is provided within the vibration gap. The piezoelectric sheet is provided on a side of the substrate and configured to generate a vibration and transmit the vibration to the pressing member. The present application can improve the effect of button triggering feedback, realize the localized vibration of the buttons, and enhance the user's experience.