Display Panel Shock-Absorbing Member Stress Distribution
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Solution Overview
Problem
Display non-uniformities occur due to warping of the display panel caused by differences in expansion and contraction rates of polarizing plates and thermal expansion, leading to stress concentration and frictional forces that affect brightness and chromaticity uniformity.
Innovation Solution
A display device configuration with flexible front and rear surface elastic bodies positioned away from the panel supporting sections, reducing frictional and compressive forces, and using materials with varying hardness to distribute forces evenly, thereby minimizing stress concentration and maintaining panel alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If elastic bodies are arranged to hold the display panel from front and rear surfaces, then the display panel is securely held and positioned, but stress concentrates at the holding locations causing display non-uniformities
Solution Approach 1:
The patent applies local quality by making the elastic bodies have different physical properties at different locations. Specifically, the elastic modulus or hardness varies across the elastic body, with softer regions positioned at areas prone to warping or stress concentration. This allows localized stress distribution while maintaining overall panel holding stability, preventing display non-uniformities without compromising holding strength.
Solution Approach 2:
The patent changes physical parameters of the elastic bodies by varying their elastic modulus, hardness, or compression characteristics across different regions. This parameter variation allows the elastic bodies to adapt to local stress conditions, providing softer support where needed while maintaining firm holding where required, thus resolving the contradiction between secure holding and uniform display quality.
2Stability of the object's composition
If the display panel is held firmly between frame and panel holder, then the panel maintains proper positioning and spacing, but warping causes frictional forces and stress concentration affecting display quality
Solution Approach 1:
The patent employs flexible elastic bodies as intermediate elements between the rigid frame/panel holder and the display panel. These elastic bodies act as flexible buffers that can deform to accommodate panel warping while maintaining contact and positioning. The flexibility allows stress distribution rather than concentration, eliminating frictional forces that would otherwise damage the display while preserving proper panel spacing and positioning.
Solution Approach 2:
The patent incorporates elastic bodies as pre-installed cushioning elements between the holding structure and the display panel. These elastic bodies are designed to absorb and distribute stresses before they can concentrate on the panel surface. By providing this cushioning in advance, the system prevents stress concentration and frictional forces that would occur with rigid holding, while maintaining stable 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
The solution effectively suppresses display non-uniformities by reducing stress and maintaining panel alignment, even under conditions of warping or external forces, ensuring consistent brightness and chromaticity across the display surface.
Implementation Method 1
force against the display panel from the first shock-absorbing member and the second shock-absorbing member is smaller in a vicinity of the supporting member than in other portions
Data Source
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AI summary
A display device has a display panel (2); a first holding member (3) holding a plurality of sides of the display panel (2) from a front surface side; a first shock-absorbing member (30) disposed between the front surface side of the display panel (2) and the first holding member (3), at least at a side of a lower end section of the display panel (2); a second holding member (4) holding the plurality of the sides of the display panel (2) from the rear surface side; a second shock-absorbing member (212) disposed between the rear surface side of the display panel (2) and the second holding member (4), at least at the side of the lower end section of the display panel (2); and a supporting member (240) supporting a portion of the lower end section of the display panel (2). The force against the display panel (2) from the first shock-absorbing member (30) and the second shock-absorbing member (212) is smaller in the vicinity of the supporting member (240) than in other portions.