Touchscreen Gap Structure for Low-Noise Vibrating Displays
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Solution Overview
Problem
Existing display technologies face issues with high-frequency noise and heat generation due to friction between the touch screen and display screen, which degrade user experience.
Innovation Solution
A display apparatus with a fixing structure having a Young's modulus less than 0.1 MPa maintains a gap between the touch screen and display screen, using a colloid material and a liquid optical clear adhesive to minimize vibration suppression and noise, while incorporating a sound absorbing sponge to absorb vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the touch screen is directly attached to the display screen, then structural stability is improved, but high-frequency noise and heat generation increase due to friction
Solution Approach 1:
The patent introduces a fixing structure with low Young's modulus (less than 0.1 MPa) as an intermediary between the touch screen and display screen. This intermediate layer maintains the necessary gap to prevent friction-induced noise and heat while still providing structural support and stability.
Solution Approach 2:
The patent changes the physical parameter of the fixing structure by specifying its Young's modulus to be less than 0.1 MPa, which is significantly lower than traditional adhesive materials. This parameter change allows the fixing structure to maintain a stable gap without rigidly coupling the touch screen and display screen, thereby eliminating friction-related harmful effects.
2Object-affected harmful factors
If a gap is maintained between the touch screen and display screen, then friction-induced noise is reduced, but tactile sensation quality may deteriorate
Solution Approach 1:
The patent specifies precise parameter ranges for the gap maintenance: the Young's modulus of the fixing structure is controlled to be less than 0.1 MPa, and the gap is maintained at specific dimensions. These parameter optimizations ensure that the gap is sufficient to prevent friction noise while remaining small enough to preserve tactile sensation quality.
Solution Approach 2:
The fixing structure with specific low Young's modulus properties is applied locally at critical positions to maintain the gap precisely where needed, allowing the touch screen to vibrate freely in contact areas while preventing friction at non-contact edges, thus preserving tactile quality while reducing noise.
3Stability of the object's composition
If a rigid fixing structure is used to maintain the gap, then positional stability is improved, but vibration suppression increases reducing tactile feedback quality
Solution Approach 1:
The patent fundamentally changes the mechanical parameter of the fixing structure by selecting materials with Young's modulus less than 0.1 MPa, which is orders of magnitude lower than rigid materials. This enables the fixing structure to provide positional stability through gentle constraint rather than rigid fixation, minimizing vibration energy loss and preserving tactile feedback quality.
Solution Approach 2:
The fixing structure functions as a flexible element that can deform slightly to accommodate vibrations while maintaining the overall gap position. This flexibility allows the system to preserve tactile feedback energy while still achieving positional stability, unlike rigid fixing structures that would dampen vibrations excessively.
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 effectively reduces high-frequency noise and heat generation, enhancing user experience by maintaining tactile sensation without interfering with display functionality.
Implementation Method 1
a tactile sensor configured to generate a standing wave on a surface of the touch screen when working
Implementation Method 2
a sound absorbing sponge located between the fixing structure and the display screen
Data Source
AI summary
The present disclosure provides a display device. In order to avoid high-frequency noise in a display screen that is caused by friction when a display screen vibrates, a touch screen is not directly attached to the display screen, the display screen and the touch screen instead being fixed together by means of a fixing structure such that a certain gap remains between the display screen and the touch screen, wherein air or another flowing liquid which does not affect display can be filled in the gap. Moreover, the Young's modulus of the fixing structure is less than 0. 1 MPa, so as to ensure that the fixing structure does not substantially inhibit the vibration of the touch screen during operation of a touch sensor.