Piezoelectric Vibrator with Integrated Light Detection for Haptic Feedback

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Solution Overview

Problem

Current methods for detecting vibration waveforms in haptic feedback systems, such as those used in touch screens, are inefficient and lack precision, often relying on particle dispersion analysis or laser vibration measurement, which are not effective for real-time and natural interaction with multimedia terminals.

Innovation Solution

A vibrator comprising a substrate with a piezoelectric component and a light-emitting component, where the piezoelectric component drives the light-emitting unit to emit light based on deformation, allowing for the representation of vibration waveforms through light spots, enabling efficient detection of vibration waveforms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If particle dispersion analysis or laser vibration measurement equipment is used to detect vibration waveforms, then measurement capability is provided, but the detection precision and efficiency are insufficient for real-time haptic feedback

Engineering Contradiction:

Improvevibration waveform detection precisionVSAvoiddetection efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent replaces complex mechanical measurement systems (laser vibration measurement equipment) with a simplified electromechanical system using piezoelectric units. The direct piezoelectric unit converts mechanical vibration directly into electrical signals, eliminating the need for external laser equipment and software analysis, thereby improving both detection precision and real-time efficiency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The vibrator structure serves dual functions: the piezoelectric component both generates vibration and detects it through the direct piezoelectric effect. This self-detection capability eliminates the need for separate measurement equipment, enabling real-time waveform detection while maintaining high precision and improving overall system efficiency

Inventive Principle:

Principle #25Self-service

2Reliability

If traditional vibration detection methods are used, then basic measurement is possible, but real-time interaction with multimedia terminals cannot be achieved

Engineering Contradiction:

Improvehaptic feedback reliabilityVSAvoidresponse time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces slow mechanical measurement processes with direct piezoelectric signal conversion, enabling real-time detection of vibration waveforms. This allows the system to immediately respond to user touches and provide timely haptic feedback, eliminating the time loss associated with traditional measurement methods

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The piezoelectric component continuously detects vibration waveforms during operation, providing uninterrupted real-time feedback. This continuous detection ensures reliable haptic interaction without interruption or delay, maintaining constant communication between the user and the multimedia terminal

Inventive Principle:

Principle #20Continuity of useful action

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

This solution allows for precise and efficient detection of vibration waveforms, enhancing the natural interaction with multimedia terminals by representing vibration positions and amplitudes as light spots, thereby improving the haptic feedback experience.

Implementation Method 1

the piezoelectric component comprises an inverse piezoelectric unit, the light-emitting component comprises a direct piezoelectric unit... the piezoelectric component is configured to receive an electrical signal to make the inverse piezoelectric unit deform

Methodology Applied

Scientific EffectInverse piezoelectric effect: Piezoelectric Effect

Implementation Method 2

the direct piezoelectric unit is configured to generate a current when deformation occurs, to drive the light-emitting unit to emit light

Methodology Applied

Scientific EffectDirect piezoelectric effect: Piezoelectric Effect

Implementation Method 3

the light-emitting unit comprises an LED electrode and an LED chip

Methodology Applied

Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentUS11650666B2Vibrator, manufacturing method thereof, haptical sensation reproduction apparatus and vibration waveform detection method

Publication Date: 2023.05.16 BOE TECHNOLOGY GROUP CO LTD

AI summary

A vibrator, a manufacturing method thereof, a haptical sensation reproduction apparatus and a vibration waveform detection method, and relates to the technical field of display. The vibrator comprises a substrate, and a piezoelectric component and a light-emitting component located on the substrate, wherein the piezoelectric component comprises an inverse piezoelectric unit, the light-emitting component comprises a direct piezoelectric unit and a light-emitting unit, and the inverse piezoelectric unit is in contact and connected with the direct piezoelectric unit. The vibrator of this solution may be disposed in a touch-control reproduction screen, the inverse piezoelectric unit in the vibrator is driven to deform to generate vibrations, and the direct piezoelectric unit in contact and connection therewith is driven to deform to generate a current to drive the light-emitting unit to emit light.