Deformable Adhesive Chassis for Flat Panel Display Structural Support
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Solution Overview
Problem
Modern flat panel displays, such as OLED and micro-LED, are prone to damage under load and environmental changes, particularly in the aviation industry, due to inadequate structural support and material compatibility issues, which can lead to cracking and safety risks during abuse loading tests and temperature variations.
Innovation Solution
The implementation of a custom chassis with a deformable adhesive and additional structural components, such as braces and fillers, to provide uniform support and shield electronic components, addressing internal voids and material mismatch issues, and using flexible substrates to mitigate shear stresses caused by thermal expansion differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If flat panel displays are made thinner and lighter, then portability and modern design are improved, but structural strength and resistance to damage under load deteriorate
Solution Approach 1:
The patent applies composite materials by combining the thin flat panel display with a chassis structure and deformable adhesive materials. The chassis provides rigid structural support while the deformable adhesive absorbs thermal stresses, creating a composite system that maintains both lightness and structural strength.
Solution Approach 2:
The patent uses a deformable adhesive layer between the display and chassis that can flex and deform under thermal expansion and contraction. This flexible intermediate layer protects the thin display from rigid constraints while maintaining structural attachment, resolving the contradiction between thinness and strength.
2Strength
If rigid structural support is added to protect thin displays, then strength and damage resistance are improved, but susceptibility to thermal stress and delamination worsens
Solution Approach 1:
The patent changes the mechanical parameters of the adhesive material, making it deformable rather than rigid. This allows the adhesive to accommodate thermal expansion and contraction of the display and chassis, preventing delamination while maintaining structural support. The adhesive's ability to change its deformation characteristics resolves the contradiction between strength and thermal stress resistance.
Solution Approach 2:
The patent explicitly addresses thermal expansion by using a deformable adhesive that can accommodate the differential thermal expansion between the display, adhesive, and chassis. The adhesive layer absorbs the thermal stresses that would otherwise cause delamination, allowing rigid structural support without compromising reliability under temperature variations.
3Ease of manufacture
If standard adhesive bonding is used between display and chassis, then ease of manufacture is improved, but structural integrity under thermal cycling worsens
Solution Approach 1:
The patent modifies the adhesive material parameters to be deformable, which maintains ease of application similar to standard adhesives but provides superior performance under thermal cycling. The deformable characteristic is built into the material selection rather than requiring complex assembly processes, thus maintaining manufacturing simplicity while dramatically improving bonding reliability.
4Volume of moving object
If electronic components are mounted close to the display surface, then device compactness is improved, but vulnerability to contact with chassis under load worsens
Solution Approach 1:
The patent applies beforehand cushioning by positioning the deformable adhesive layer and chassis structure to absorb and distribute loads before they can reach the electronic components. The adhesive layer acts as a cushion that deforms under load, preventing direct contact between components and the chassis, thus protecting components while maintaining compact design.
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
Enhances the structural integrity and reliability of flat panel displays by distributing loads effectively, preventing cracking and delamination, and ensuring safety and functionality under various environmental conditions.
Implementation Method 1
The first adhesive member is deformable under a shear force that is coplanar with the flat panel display
Implementation Method 2
mitigate shear stresses caused by thermal expansion differences
Implementation Method 3
filling selected internal voids with a curable liquid filler
Data Source
AI summary
A method for improving structural support for a display apparatus comprising a flat panel display and a circuit board situated at a back side of the flat panel display can include preparing a chassis, applying a first adhesive member to selective areas on a front surface of the chassis, and bonding the front surface of the chassis to the back side of the flat panel display using the first adhesive member. The first adhesive member is deformable under a shear force that is coplanar with the flat panel display.