Composite Back Plate Structure for Thin OLED Display Rigidity
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Solution Overview
Problem
The challenge lies in ensuring structural rigidity and preventing thermal deformation of ultra-thin large screen display devices, particularly those using organic light emitting diodes (OLEDs), while maintaining high temperature reliability.
Innovation Solution
A display device comprising a display panel, a material complexed plate with a front and rear skin, a core of fibers, and a side frame, along with heat dissipation sheets to manage thermal issues and enhance rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If an ultra-thin structure is used for large screen display devices, then the profile thickness is reduced and aesthetic appearance is improved, but structural rigidity deteriorates and thermal deformation resistance worsens
Solution Approach 1:
The patent employs a composite plate structure consisting of multiple layers including a rigid plate, flexible plate, and foam core material. This composite construction provides enhanced structural rigidity and thermal resistance while maintaining an ultra-thin profile, directly resolving the contradiction between thinness and strength.
Solution Approach 2:
The patent implements a nested structure where the flexible plate is positioned between the rigid plate and the display panel, and the foam core is embedded within the composite plate assembly. This nested arrangement maximizes structural efficiency within the limited thickness, providing rigidity support without increasing overall profile thickness.
2Length of stationary object
If an ultra-thin structure is used for large screen display devices, then the profile thickness is reduced, but heat dissipation capability deteriorates and thermal deformation increases
Solution Approach 1:
The composite plate incorporates materials with different thermal properties - the rigid plate provides thermal stability, the foam core offers thermal insulation, and the flexible plate aids in heat distribution. This multi-material approach manages thermal deformation effectively while preserving the ultra-thin design.
Solution Approach 2:
The flexible plate acts as an intermediary layer between the heat-generating display panel and the rigid plate structure. It facilitates heat distribution and prevents direct thermal stress concentration, thereby reducing thermal deformation in the ultra-thin device structure.
3Strength
If structural rigidity is enhanced through thicker structures, then rigidity and thermal resistance improve, but device thickness increases and ultra-thin profile is lost
Solution Approach 1:
The patent achieves high structural rigidity in an ultra-thin profile by using composite materials with optimized mechanical properties. The combination of rigid plate, flexible plate, and foam core creates a structure with high strength-to-thickness ratio, providing rigidity without increasing profile thickness.
Solution Approach 2:
The patent applies local reinforcement strategies where the rigid plate and foam core are positioned specifically in areas requiring maximum structural support. This localized quality enhancement provides rigidity where needed while keeping other areas thin, maintaining the overall ultra-thin profile.
4Ease of manufacture
If traditional single-material plate structures are used, then manufacturing is simple, but structural rigidity and thermal management performance are insufficient
Solution Approach 1:
The patent uses a composite plate structure with multiple layers that can be manufactured using standardized assembly processes. The modular nature of the composite components allows for relatively simple manufacturing and assembly, while the composite construction itself provides superior rigidity and thermal management compared to single-material structures.
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 ensures structural rigidity and prevents thermal deformation, enhancing the temperature reliability of ultra-thin large screen display devices.
Implementation Method 1
a core disposed between the front skin and the rear skin, the core including fibers
Implementation Method 2
a first heat dissipation sheet that is disposed between the display panel and the front skin and is adjacent to or overlaps the inner frame
Data Source
AI summary
A display device is disclosed. The display device may comprise: a display panel; a composite material plate which is disposed at the rear of the display panel; and a side frame which is disposed between the display panel and the composite material plate, which is fixed to the composite material plate, and to which the display panel is coupled, wherein the composite material plate comprises: a front skin forming the front surface thereof; a rear skin forming the rear surface thereof and opposite to the front skin; a core disposed between the front skin and the rear skin and containing fibers; and an inner frame formed by depressing the front skin or the rear skin.