Partial Vibration Control in Display Devices via Destructive Interference
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Solution Overview
Problem
Existing display devices that use mechanical eccentric motors for vibration lack precision and fail to provide partial vibrations, which are necessary for more nuanced user interaction.
Innovation Solution
A display device with a plurality of vibration plates that oscillate in response to an oscillation signal, where specific plates are designed to experience destructive interference, allowing only certain plates to effectively oscillate, thereby enabling partial vibrations and more delicate interfacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical eccentric motor is used to generate vibrations, then the display device can produce vibrations, but the vibrations affect the entire device and cannot provide partial vibrations
Solution Approach 1:
The vibration system is divided into multiple independent vibration plates (first, second, third, and fourth vibration plates) that can be controlled separately. Each plate can be oscillated independently or in combination with others, allowing precise control over which regions vibrate. This segmentation enables partial vibrations in specific areas rather than whole-device vibration.
Solution Approach 2:
Different regions of the display device are assigned different vibration characteristics through the segmented plate structure. The first vibration plate can be activated independently to create localized vibration in a specific region, while other plates remain stationary or oscillate differently. This allows tailored vibration feedback in different areas of the device.
2Manufacturing precision
If multiple vibration plates are used to enable partial vibrations, then precise vibration control is achieved, but the system complexity increases
Solution Approach 1:
The patent utilizes destructive interference between oscillations of adjacent vibration plates to eliminate vibrations in specific regions. By controlling the phase and amplitude of oscillations from multiple plates, areas where waves cancel each other out are created, effectively suppressing vibrations where needed. This converts the potential harm of multiple plates creating complex vibration patterns into a benefit for precise vibration control.
3Area of stationary object
If vibration plates oscillate in adjacent regions, then coverage area increases, but unwanted vibrations occur due to interference
Solution Approach 1:
The patent deliberately uses destructive interference between adjacent vibration plates to suppress unwanted vibrations. By controlling the oscillation parameters of plates oscillating in opposite directions, the interference creates cancellation zones that eliminate harmful vibrations in specific regions, converting the interference effect from a problem into a solution for vibration control.
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 allows for precise and accurate partial vibrations, enhancing user interaction by ensuring only intended vibration plates oscillate, thus providing more delicate and controlled feedback.
Implementation Method 1
The vibrator may include Electro Active Polymer (EAP) or Piezo-Electric Material
Implementation Method 2
The vibrator may include Electro Active Polymer (EAP) or Piezo-Electric Material
Implementation Method 3
Oscillation of the at least one second vibration plate and oscillation of a third vibration plate, among the plurality of vibration plates, may cause destructive interference so that effective oscillation does not occur in the at least one second vibration plate
Data Source
AI summary
A device, such as a display device, including a plurality of vibration plates oscillating in response to one or more oscillation signals. While at least one of first vibration plates among the plurality of vibration plates are oscillating, effective oscillation does not occur in at least one of second vibration plates among the plurality of vibration plates.