OLED Metallic Layer Contact Integration
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Solution Overview
Problem
Existing methods for electrical contacting and mounting of organic light-emitting diode (OLED) light sources are inefficient due to sensitivity to shearing stresses, high transition resistance, and limited applicability of flexible printed circuit boards, necessitating separate connection contacts and housing arrangements.
Innovation Solution
A light source with connection contacts bonded to a metallic layer and fixed within an insulating material housing, which serves both for electrical contacting and mechanical mounting, utilizing ultrasonic soldering or other bonding methods, allowing for reduced wiring effort and integrated voltage supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive bonds are used to fix electrical conductors to the metallic layer, then electrical connection is achieved, but the connection becomes extremely sensitive to shearing stresses
Solution Approach 1:
The patent combines the electrical connection function and mechanical mounting function into a single integrated base component. The base simultaneously provides electrical contact through conductive elements and mechanical support through integrated mounting structures, eliminating the need for separate adhesive bonding of conductors to the metallic layer. This integration resolves the contradiction by providing a robust mechanical connection that is not sensitive to shearing stresses while maintaining electrical connectivity.
Solution Approach 2:
The base component performs multiple functions simultaneously: it provides electrical contact through integrated conductive elements, mechanical support for the OLED panel, and structural mounting for the lighting device. This multi-functionality eliminates the need for separate adhesive bonding operations and creates a more reliable connection that is not sensitive to shearing stresses.
2Ease of manufacture
If conductive elastomers are used for electrical connection, then electrical contact is established, but compression is required and transition resistance is comparatively high
Solution Approach 1:
The patent integrates conductive elements directly into the base structure, combining electrical connection and mechanical support functions. This eliminates the need for separate conductive elastomer components that require compression and exhibit high transition resistance. The integrated conductive paths provide low-resistance electrical contact without requiring additional compression mechanisms.
3Ease of manufacture
If flexible printed circuit boards are used for electrical connection, then electrical connectivity is achieved, but the solution is only applicable in certain applications due to sensitivity
Solution Approach 1:
The integrated base design with embedded conductive elements provides a universal solution that can be applied across different lighting applications without the limitations of flexible printed circuit boards. The base simultaneously provides electrical connection and mechanical support, making it adaptable to various OLED panel sizes and configurations while eliminating the sensitivity issues associated with flexible circuits.
4Reliability
If separate connection contacts and housing arrangements are used, then electrical connection is achieved, but wiring complexity increases
Solution Approach 1:
The patent merges the electrical connection function and mechanical housing function into a single integrated base component. The base contains embedded conductive elements that provide electrical contact while the housing structure provides mechanical support and mounting. This integration significantly reduces wiring complexity by eliminating separate connection contacts and simplifying the electrical pathways.
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
This solution combines electrical contacting and mechanical mounting in a single component, reducing wiring complexity and enabling flush panel designs, while allowing for efficient heat dissipation and easy assembly of OLED lamps.
Implementation Method 1
A metal layer vapor-deposited onto the carrier material takes over the voltage and power supply
Implementation Method 2
Ultrasonic soldering, in particular, is provided for producing the materially bonded connection between the metallic layer of the carrier material and the connection contact
Implementation Method 3
Lamps with organic, light-emitting diodes (OLED)
Implementation Method 4
at least one organic light-emitting diode (OLED)
Data Source
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AI summary
A luminous means is presented and described, comprising at least one organic light-emitting diode (OLED), which are applied on a carrier material on which a metallic layer has been vapour-deposited, said metallic layer serving for the voltage supply of the OLED and for this purpose being connected to connection conductors, wherein at least one connection contact firstly is linked cohesively to at least the metallic layer and secondly is fixed directly in an insulating-material housing.