Vibrator Adhesive Layer for Display Screen-to-Body Ratio
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Solution Overview
Problem
Display devices with borderless screens face challenges in maximizing screen-to-body ratio due to occupied space by acoustic elements and lack of adjustable touch feedback force, which also limits their thin and lightweight design.
Innovation Solution
Incorporating a vibrator connected to the display panel via an adhesive layer, which vibrates at specific frequencies to provide tactile feedback and concentrated acoustic sound, while being strategically positioned to enhance screen-to-body ratio and user perceptibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a traditional acoustic element is used in the display device, then the acoustic function is provided, but the screen-to-body ratio is reduced due to occupied area
Solution Approach 1:
The patent merges the acoustic element with the vibration motor into a single integrated component. The vibration motor serves dual functions: providing tactile feedback through vibration and generating acoustic sound through controlled vibration at different frequencies. This consolidation eliminates the need for a separate acoustic element, thereby maximizing the screen-to-body ratio while maintaining acoustic functionality.
Solution Approach 2:
The vibration motor is designed to perform multiple functions: it provides tactile feedback for touch input recognition and generates acoustic output for sound reproduction. By making the vibration motor universal, the patent eliminates the need for dedicated separate components for each function, thus increasing the display area while maintaining both tactile and acoustic capabilities.
2Ease of operation
If a vibration motor is used for touch feedback, then the touch feedback function is provided, but the magnitude of touch feedback force cannot be adjusted according to user touch force
Solution Approach 1:
The patent implements dynamic adjustment of the vibration motor's operating parameters based on detected touch force magnitude. The control system varies the vibration frequency and amplitude in real-time according to the user's touch input, enabling the touch feedback force to be adaptively adjusted. This dynamic response enhances user interaction by providing differentiated tactile feedback for different touch intensities.
3Ease of operation
If a vibration motor is used for touch feedback, then the touch feedback function is provided, but the volume and weight limit the implementation of a thin and lightweight display device
Solution Approach 1:
The patent combines the acoustic element and vibration motor into a single integrated component, eliminating the need for separate heavy acoustic elements. This consolidation significantly reduces the overall weight and volume of the display device while maintaining both tactile feedback and acoustic functionality, enabling thinner and lighter device design.
4Power
If the vibrator thickness is increased to improve vibration performance, then the vibration performance is enhanced, but the device thickness increases
Solution Approach 1:
The patent optimizes the vibrator thickness parameter within a specific range (50%-70% of the frame thickness) to achieve the best balance between vibration performance and device thinness. By precisely controlling the thickness parameter and using high-performance materials, the patent enhances vibration output while maintaining a thin overall device profile.
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 a higher screen-to-body ratio and improved user touch feedback without external sound leakage, enabling a thinner and more user-friendly display device design.
Implementation Method 1
the vibrator vibrates the display panel to provide touch tactile feedback when the vibrator vibrates at a frequency larger than or equal to 1 Hz and smaller than or equal to 250 Hz, and the vibrator vibrates the display panel to provide acoustic function and generate sound
Data Source
AI summary
A display device includes a display panel, a vibrator and an adhesive layer. The vibrator is disposed on a surface of the display panel. The adhesive layer is disposed between the display panel and the vibrator, and a part of the adhesive layer contacts the display panel and another part of the adhesive layer contacts the vibrator.