Display Vibration Transfer Structure for Stronger Ultrasonic Haptics
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Solution Overview
Problem
Current display apparatuses lack the ability to effectively provide ultrasonic vibrations or haptics, limiting the intensity and recognition of virtual textures to users.
Innovation Solution
A vibration apparatus comprising a vibration generating part and a vibration transfer part with spaced vibration transfer members that convert in-plane vibrations into out-plane vibrations, enhancing the squeeze film effect and recognition of ultrasonic vibrations or haptics by optimizing frequency and material properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If in-plane vibration mode is used in the vibration generating part, then the structure is simple and easy to manufacture, but the ultrasonic vibration intensity is insufficient and the squeeze film effect is weak
Solution Approach 1:
The patent applies dimensionality change by converting the vibration mode from in-plane (2D) to out-of-plane (3D) through the vibration transfer part. The vibration generating part produces in-plane vibrations, which are then transformed by the vibration transfer part into out-of-plane vibrations that are perpendicular to the display member surface. This dimensional transformation enables the generation of sufficient ultrasonic vibration intensity and strong squeeze film effect while maintaining the simplicity of the vibration generating part structure.
2Power
If vibration transfer members are spaced apart from one another, then the out-plane vibration mode is enhanced, but the device complexity increases
Solution Approach 1:
The vibration transfer part is segmented into multiple spaced-apart vibration transfer members instead of using a continuous structure. Each vibration transfer member independently transfers vibration from the vibration generating part to the display member. This segmentation enables effective out-of-plane vibration mode generation while maintaining manufacturing feasibility. The segmented structure allows for optimized vibration transfer paths and enhanced ultrasonic haptic effects.
3Adaptability or versatility
If the vibration apparatus is added to the display apparatus, then ultrasonic haptic feedback is provided, but the attachment quality and stability may be compromised
Solution Approach 1:
The vibration apparatus is merged with the display apparatus by integrating the vibration generating part and vibration transfer part directly with the display member structure. The vibration transfer members are positioned to contact the display member at multiple points, creating stable attachment. This merging approach enables ultrasonic haptic feedback functionality while maintaining attachment quality and structural stability through the unified design.
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 intensified ultrasonic vibrations or haptics, improving user recognition of virtual textures by converting in-plane vibrations into out-plane vibrations, thereby enhancing the squeeze film effect and attachment quality between the display member and the vibration apparatus.
Implementation Method 1
Each of the plurality of vibration transfer members may be configured to convert an in-plane vibration mode of the vibration generating part into an out-plane vibration mode
Implementation Method 2
one or more vibration generating apparatuses configured to vibrate the display member
Implementation Method 3
enhancing the squeeze film effect and recognition of ultrasonic vibrations or haptics
Data Source
AI summary
A vibration apparatus according to an aspect of the present disclosure includes a vibration generating part, and a vibration transfer part coupled to the vibration generating part, the vibration transfer part including a plurality of vibration transfer members spaced apart from one another. Each of the plurality of vibration transfer members is configured to convert an in-plane vibration mode of the vibration generating part into an out-plane vibration mode.