Vehicle Display Bracket Elastic Deformation Reduces Bending Stress
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Solution Overview
Problem
Existing display devices for vehicles face issues with bending stress and torsional stress leading to display unevenness, particularly when using in-plane switching (IPS) liquid crystal cells, which can result in black unevenness or luminance issues due to the complexity of fixing mechanisms and the large number of components involved.
Innovation Solution
A simplified display device structure where the display cell is directly adhered and fixed to the inner surface of a light-transmissive front panel, with a bracket providing position adjustability and elastic deformation to minimize strain, and a fixing mechanism using a smaller screw or rivet to reduce stress on the display cell, ensuring close contact and minimal air space for improved light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the display cell is fixed to a die-cast inner frame with multiple components, then the fixing strength is improved, but the device complexity increases and bending stress acts on the display cell
Solution Approach 1:
The patent combines the display cell fixing function and front panel support function into a single bracket structure. The bracket directly adheres the display cell to the front panel while simultaneously supporting the front panel, eliminating the need for separate die-cast inner frames and multiple fixing components. This merging reduces device complexity while maintaining fixing strength through direct bonding.
Solution Approach 2:
The patent extracts the display cell from the complex multi-component die-cast frame structure and repositions it to adhere directly to the front panel via a simplified bracket. This extraction removes the display cell from the harmful stress path of complex mechanical assemblies, reducing bending stress while maintaining secure fixation.
2Stability of the object's composition
If multiple frames and components are used to fix the display cell and back light, then the structural stability is improved, but the assembling complexity increases
Solution Approach 1:
The patent merges multiple separate fixing operations into a single adhesive bonding process. The bracket simultaneously secures the display cell to the front panel and provides structural support, eliminating the need for multiple frames and complex assembly steps. This reduces assembling complexity while maintaining structural stability through direct bonding.
3Stability of the object's composition
If a complex fixing mechanism with multiple components is used, then the position stability is improved, but the bending stress on the display cell increases
Solution Approach 1:
The patent extracts the display cell from the complex multi-frame structure and repositions it to adhere directly to the front panel. This extraction removes the display cell from the stress path of complex mechanical assemblies, significantly reducing bending stress while maintaining position stability through direct adhesive bonding to the rigid front panel.
4Manufacturing precision
If the bracket is rigidly fixed to the support, then the position accuracy is improved, but the strain transmission to the display cell increases
Solution Approach 1:
The patent changes the mechanical parameter of the bracket from rigid to elastic. The elastic bracket maintains position accuracy by holding the display cell firmly against the front panel, while simultaneously absorbing and isolating strain from the support fixing mechanism. This parameter change allows the bracket to transmit minimal strain to the display cell while maintaining precise positioning.
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 configuration reduces the likelihood of bending and torsional strain, suppressing display unevenness and luminance issues, while maintaining a minimal component count and ensuring clear image visibility with a wide viewing angle.
Implementation Method 1
A light-transmissive front panel 4 and a display cell 10 are adhered to each other with a light-transmissive adhesive layer 3 in a state in which the front panel and the display cell are in close contact
Implementation Method 2
the bracket is fixed to the support by a fixing mechanism in a state having position adjustability in a vertical direction perpendicular to a surface of the front panel
Data Source
AI summary
A front panel, a touchpad, and a display cell are adhered and fixed, and these and a back light are held by a bracket to construct a display body unit. When the display body unit is mounted on a support, the front panel is fixed to the support with an adhesive layer therebetween. In this state, each of mounting portions has position adjustability in the vertical direction (Z direction). In the state having position adjustability, the mounting portion is fixed to the support by a fixing mechanism.