Dual-Bezel OLED Display Impact Protection
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Solution Overview
Problem
OLED displays are prone to damage from impact due to the direct transmission of force from the bezel to the display panel, lacking a protective structure between the panel and the bezel, which is not present in LCDs, leading to mechanical weakness.
Innovation Solution
The use of a dual-bezel structure where the first bezel, made of a resin such as polycarbonate, provides shock absorption with lower surface hardness and higher elastic modulus than the second bezel, made of metal, to distribute and absorb external impacts, enhancing the mechanical strength of the OLED display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single metal bezel is used in OLED displays, then the structural strength is sufficient, but the display panel is directly exposed to impact forces causing easy damage
Solution Approach 1:
The bezel is divided into two separate components: a first bezel made of resin material and a second bezel made of metal material. This segmentation allows each component to perform its specialized function - the resin bezel absorbs impact energy while the metal bezel provides structural support, thereby resolving the contradiction between structural strength and impact resistance.
Solution Approach 2:
The resin first bezel acts as an intermediary component between the external environment and the display panel. It mediates the transmission of impact forces by absorbing and distributing the shock before it reaches the fragile display panel, preventing direct impact damage while maintaining overall structural integrity.
2Reliability
If a dual-bezel structure with resin first bezel is added, then impact resistance is improved, but the device complexity increases
Solution Approach 1:
The resin first bezel is nested within the metal second bezel, creating a compact dual-bezel structure. The first bezel is positioned inside the cavity formed by the second bezel, and both are integrally coupled through coupling protrusions and recesses. This nesting arrangement minimizes the overall space occupied while providing enhanced impact resistance, thereby reducing the complexity increase.
Solution Approach 2:
The coupling mechanism integrates the first and second bezels into a unified structure through integral coupling. The coupling protrusions of the first bezel fit into the coupling recesses of the second bezel, creating a combined assembly that functions as a single protective unit. This merging reduces the number of separate components and simplifies the overall structure.
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 dual-bezel structure effectively protects the OLED display from impact by absorbing shocks and distributing forces, significantly reducing the likelihood of damage during drops or static loads, as demonstrated by improved drop test results compared to metal-only bezel configurations.
Implementation Method 1
the first bezel and the second bezel including different materials and including a bottom portion and a skirt portion protruding from edges of the bottom portion... The first bezel can have a lower surface hardness and a higher elastic modulus than that of the second bezel
Data Source
AI summary
An organic light emitting diode display that includes a display panel and a bezel to receive the display panel, the bezel including a first bezel and a second bezel, each of the first bezel and the second bezel including different materials and including a bottom portion and a skirt portion protruding from edges of the bottom portion.