Fluid Bag Force Dispersing Device for Display Backlight Modules
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Solution Overview
Problem
Existing designs fail to effectively disperse external forces over a large area within a limited space, leading to stress concentration and potential damage to internal components, particularly in lightweight and thin products where increased rigidity is not feasible.
Innovation Solution
A force dispersing device utilizing a fluid bag filled with a confined fluid is placed between the casing and the backlight module of a display device, allowing the fluid to distribute applied forces over a wider area due to equal pressure changes throughout the fluid, thereby reducing stress on surrounding components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rigidity of outer components is increased to protect internal components from external forces, then the protection capability is improved, but the volume and weight of the product increase
Solution Approach 1:
The patent uses a fluid-filled bag (pneumatic/hydraulic element) as a protective buffer between the external environment and internal components. The fluid (gas or liquid) provides cushioning and force distribution without requiring rigid structural reinforcement, thereby maintaining light weight while improving protection capability
Solution Approach 2:
The patent changes the physical state parameter by using a compressible fluid medium instead of solid rigid structures. The fluid's compressibility and ability to distribute pressure allow it to absorb and disperse external forces effectively, providing protection without increasing weight or volume
2Reliability
If the rigidity of outer components is increased to protect internal components from external forces, then the protection capability is improved, but the product thickness increases
Solution Approach 1:
The fluid-filled bag provides a thin yet effective protective layer that can be integrated into the product structure without significantly increasing thickness. The fluid's pressure distribution properties enable protection in a compact form factor
Solution Approach 2:
The patent employs a flexible bag structure filled with fluid, which acts as a thin protective film or shell. This flexible enclosure provides force dispersion and protection while maintaining a slim profile, avoiding the need for thick rigid protective layers
3Reliability
If separate air cells are used as packaging buffer, then the material expendability and air compressibility provide buffering, but the force dispersion capability in different directions is reduced
Solution Approach 1:
The patent merges multiple separate air cells into a single continuous fluid-filled chamber. This unified fluid medium allows forces applied at any point to be distributed uniformly in all directions throughout the entire volume, enhancing force dispersion capability compared to separate cells
Solution Approach 2:
The patent uses a homogeneous fluid medium (gas or liquid) that uniformly distributes pressure throughout its volume. This homogeneity ensures that external forces are evenly dispersed in all directions, providing superior force distribution compared to discrete separate cells with potential weak points
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 fluid bag effectively disperses forces, reducing stress concentrations and preventing mechanical damage to internal components while maintaining a slim profile and adaptability to different environments.
Implementation Method 1
since the same pressure change occurs everywhere in a confined fluid, the fluid bag disposed in a limited space is allowed to disperse the force applied thereon over a wider area
Data Source
AI summary
One embodiment of the invention provides a force dispersing device for a display device. The display device has a casing, a backlight module and a display panel, the casing has a display opening, the backlight module is disposed in the display opening, and the display panel is disposed on the backlight module and in the display opening. The force dispersing device includes a fluid bag filled with a confined fluid and disposed between the casing and the backlight module.