Folded OLED Display Antenna Integration and Thermal Management
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Solution Overview
Problem
Portable information handling systems face challenges in integrating OLED displays with adequate structural support and thermal dissipation due to their low form factor, which leads to interference and damage from excess thermal energy, especially when the displays are folded or integrated on both sides of a housing.
Innovation Solution
A system with a laminated substrate support using materials like copper, graphite, or graphene, combined with air channels and a piezoelectric device for cooling airflow, integrated antenna wires within the OLED film for wireless communication, and a midframe for camera support, which allows for two-sided OLED display presentation and efficient thermal energy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If OLED displays are folded or integrated on both sides of housing to achieve low form factor, then display area and adaptability are improved, but thermal energy accumulation increases causing component damage
Solution Approach 1:
A laminated substrate support is introduced as an intermediary component between the OLED display and housing. This substrate incorporates thermal dissipation materials that actively manage heat transfer, preventing thermal energy accumulation while maintaining the folded or dual-sided display configuration. The substrate acts as a thermal mediator that protects sensitive display components from harmful thermal effects.
Solution Approach 2:
The laminated substrate support is constructed from composite materials specifically selected for their thermal dissipation properties. These composite materials enable effective heat management in the low form factor housing, allowing the OLED display to maintain its flexible configuration without suffering from thermal energy accumulation that would otherwise cause component damage.
2Volume of moving object
If multiple components are integrated in tight housing structure to reduce size, then portability is improved, but interference from unintended emissions increases
Solution Approach 1:
The patent applies local quality by integrating antenna wires directly within the OLED film structure at specific locations. This localized integration allows wireless communication functionality to be embedded precisely where needed without requiring separate antenna components that would increase housing volume. The antenna wires are positioned to minimize interference with other components while maintaining compact housing dimensions.
Solution Approach 2:
The patent merges multiple functions into integrated structures: antenna wires are combined with the OLED film, camera modules are integrated with the display assembly, and thermal dissipation features are incorporated into the substrate support. This merging of components reduces the overall housing volume while managing interference through careful integration design.
3Temperature
If cooling airflow paths are integrated in display structure, then thermal dissipation is improved, but device complexity increases
Solution Approach 1:
The laminated substrate support serves multiple functions simultaneously: it provides structural support for the OLED display, acts as a thermal dissipation pathway, and integrates antenna wires for wireless communication. By making the substrate multi-functional, the patent improves thermal dissipation without adding separate cooling system components that would increase device complexity.
Solution Approach 2:
The patent utilizes thin film structures for the OLED display and integrates cooling pathways within the substrate support in a manner that maintains a thin profile. The flexible nature of the OLED film and thin substrate design allows cooling airflow paths to be incorporated without significantly increasing device thickness or complexity, enabling effective thermal management in a compact form factor.
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 enables a low-profile portable information handling system with effective thermal dissipation and wireless communication capabilities, maintaining component integrity and optimizing data transfer rates by managing thermal energy and interference.
Implementation Method 1
a piezoelectric device interfaces with the cooling air path to force cooling airflow around the periphery of the OLED film
Implementation Method 2
includes thermal material to aid in removal of excess thermal energy between the OLED films, such as copper, graphite or graphene laminated to an Aramid material
Implementation Method 3
OLED displays apply current to an emissive electroluminescent layer of organic compound that emits red, green and blue light in proportion to the drive current
Data Source
AI summary
A portable information handling system display integrates a MIMO antenna configuration that cooperates with a radio to adapt display operations for supporting wireless communication. For example, plural antenna nanowires integrated with display pixel control wires selectively interface with a MIMO radio with the antenna wires selected based upon display operational characteristics, such as the presentation of visual information at the display and the enablement or disablement of touch detection circuits.