Metal Bottom Frame for OLED Stiffness and Heat
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Solution Overview
Problem
Organic electroluminescent display devices have low stiffness due to their lightweight and thin profile, which affects their reliability and display quality.
Innovation Solution
An organic electroluminescent display module is designed with a bottom frame made of metallic material that surrounds the side and rear surfaces, incorporating a radiating sheet for heat management and a polarizing plate for improved contrast ratio, enhancing the module's stiffness and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If organic ELD device uses lightweight and thin profile design, then weight and thickness are reduced, but stiffness deteriorates
Solution Approach 1:
The device is divided into multiple functional layers including substrate, buffer layer, hole transporting layer, emitting layer, electron transporting layer, and cathode layer. This segmentation allows each layer to contribute specifically to structural support and mechanical strength while maintaining overall lightweight design
Solution Approach 2:
The patent employs composite material structures combining organic luminescent materials with transparent electrodes and protective coatings. These composite structures provide enhanced mechanical strength and stiffness while preserving the lightweight and thin profile characteristics of organic ELD devices
2Device complexity
If organic ELD device uses simpler structure with fewer elements, then fabrication cost and complexity are reduced, but stiffness deteriorates
Solution Approach 1:
The transparent electrode and substrate structures serve multiple functions: electrical conduction, structural support, and protective encapsulation. This multi-functionality reduces the need for additional separate structural reinforcement elements, maintaining simplicity while improving stiffness
Solution Approach 2:
The patent modifies physical parameters of existing components, such as increasing the thickness or modifying the material composition of the substrate and electrode layers, to enhance mechanical strength without fundamentally changing the device structure or adding complex elements
Data Source
AI summary
An organic electroluminescent display module includes: an organic electroluminescent display panel including a front surface, a side surface and a rear surface, the front surface displaying images; and a bottom frame surrounding the side and rear surfaces partially, the bottom frame including a metallic material.