Assembled Screen Unit Vibration Isolation for Sound and Flatness
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Solution Overview
Problem
Conventional display technologies face issues with abnormal sound, distortion, and sound stain due to vibration transmission from the display panel to the aluminum frame and case, which affect sound quality and flatness, especially in applications with high flatness requirements.
Innovation Solution
The assembled screen unit incorporates a frame divided into first and second sub-portions with varying vibration isolation portions, where the second sub-portion near the central region has a thicker isolation portion to absorb vibrations, reducing transmission to the frame and case, and an acoustic cavity to prevent sound interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform vibration isolation structure is used between the frame and display panel, then the manufacturing complexity is reduced, but the vibration isolation effect near the central region is insufficient leading to abnormal sound and distortion
Solution Approach 1:
The patent applies local quality by differentiating the vibration isolation portions into two types: first vibration isolation portions with smaller thickness near the frame's outer edges, and second vibration isolation portions with larger thickness near the central region. This non-uniform thickness distribution targets the specific problem that vibration transmission is more severe near the central region, allowing optimized vibration isolation performance without excessive manufacturing complexity.
2Object-affected harmful factors
If the vibration isolation portions are made thicker to reduce vibration transmission, then the sound quality is improved, but the flatness of the display panel is compromised
Solution Approach 1:
The patent implements local quality through differentiated thickness design where second vibration isolation portions near the central region have larger thickness to reduce vibration-induced noise, while first vibration isolation portions near the edges maintain smaller thickness to preserve overall flatness. This localized approach allows thick isolation where vibration transmission is most problematic without compromising the global flatness requirement.
Solution Approach 2:
The frame is segmented into multiple regions with different vibration isolation requirements. The frame includes first sub-portions and second sub-portions, where second sub-portions are provided with second vibration isolation portions having larger thickness. This segmentation allows independent optimization of vibration isolation in different areas, balancing noise reduction with flatness maintenance.
3Device complexity
If the frame structure is simplified without vibration isolation portions, then the device complexity is reduced, but vibration transmission to the case causes sound stain and distortion
Solution Approach 1:
The patent introduces vibration isolation portions as intermediary elements between the frame and the display panel. These portions act as mediators that decouple the vibration transmission path, preventing vibrations from the display panel from being transmitted to the frame and subsequently to the case, thereby eliminating sound stain and distortion while maintaining a relatively simple overall structure.
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 design enhances sound quality by minimizing vibration-induced noise and distortion, maintaining flatness, and improving the overall sound performance of the assembled screen units.
Implementation Method 1
a first vibration isolation portion is provided between the first sub-portion and the display panel; a second vibration isolation portion is provided between the second sub-portion and the display panel
Data Source
AI summary
Provided in the embodiments of the present disclosure is an assembled screen unit, including a display panel, a frame, a sound-production stimulation unit, and a supporting structure; the supporting structure is configured to support the sound-production stimulation unit; the back side of the display panel includes a central region and an edge region; the sound-production stimulation unit is in contact with the central region; the frame is configured to support the display panel; the frame includes a first sub-portion and a second sub-portion; and a first vibration isolation portion is provided between the first sub-portion and the display panel; a second vibration isolation portion is provided between the second sub-portion and the display panel; and the first vibration isolation portion has a thickness less than the second vibration isolation portion.