Display Screen Cushioning Subassembly for Shock Absorption
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Solution Overview
Problem
Display screens in electronic devices are vulnerable to damage from mechanical shock, vibration, and pressure due to their fragile nature and deviations in component dimensions, which existing securing methods fail to adequately protect.
Innovation Solution
A shock-absorbing subassembly comprising a rigid first member affixed to the PCB and a flexible second member with a hard outer portion and a resilient inner portion, forming a cushioning mechanism that absorbs mechanical tolerances and shock, allowing the display screen to move freely while preventing damage from impacts and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the display screen is securely affixed to the PCB using rigid adhesives, clips or screws, then the display screen is firmly supported, but the display screen becomes vulnerable to damage from shock, vibration, and pressure
Solution Approach 1:
The patent applies beforehand cushioning by positioning a cushioning member between the display screen and the PCB before the display screen is subjected to shock or vibration. The cushioning member is designed to deform under impact forces, absorbing the shock before it reaches the fragile display screen. This pre-positioned protective element ensures that when harmful forces are applied, the display screen is already protected by the cushioning layer that will activate upon impact.
Solution Approach 2:
The cushioning member serves as an intermediary element between the rigid PCB and the fragile display screen. Rather than directly connecting the display screen to the rigid structure, the cushioning member mediates the interaction by providing a compliant interface that can deform to accommodate shocks and vibrations while still maintaining the necessary mechanical support and electrical connection.
2Object-affected harmful factors
If the display screen is allowed to move freely to absorb shock, then damage from impact is reduced, but the display screen becomes unstable and difficult to secure
Solution Approach 1:
The patent applies dynamics by designing a support structure that transitions from a static rigid connection to a dynamic system capable of controlled movement. The cushioning member allows the display screen to move dynamically in response to external forces such as shock or vibration, while the underlying rigid structure maintains overall stability. This dynamic capability enables the system to absorb impacts by permitting controlled displacement, then return to a stable position once the force is removed.
3Measurement precision
If rigid support structures are used to maintain display screen position, then positioning accuracy is improved, but the display screen is more susceptible to damage from mechanical stress
Solution Approach 1:
The patent applies local quality by differentiating the mechanical properties at different locations within the support structure. The cushioning member is positioned locally between the display screen and the PCB, providing compliant, stress-absorbing properties only where needed for impact protection, while other portions of the mounting structure maintain rigid, positionally accurate characteristics. This localized differentiation allows the system to achieve both positioning accuracy and stress resistance.
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 subassembly effectively reduces or prevents damage to the display screen from shock, vibration, and pressure, maintaining the screen's functionality and extending its lifespan by providing a cushioning support that constrains motion and returns the screen to a neutral position without requiring electrical energy.
Implementation Method 1
a flexible second member (104) with a hard outer portion (106) and a resilient inner portion (108)... forming a cushioning mechanism that absorbs mechanical tolerances and shock
Data Source
AI summary
A display screen of an electronic device may be supported by one or more subassemblies positioned between the display screen and a printed circuit board to which the display screen is secured. Each subassembly is able to act as an independent suspension for the display screen and is able to cushion the display screen by absorbing mechanical tolerances and mechanical shock and vibration. The subassemblies may be mounted on the printed circuit board using surface mount technology.