Organic Optoelectronic Component Elastomer Connector Wafer Testing
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Solution Overview
Problem
Existing organic optoelectronic components require singulation from wafer assemblies for external electrical connection, which is cumbersome and often damages the components, and conventional connections are not easily disconnectable or robust enough to withstand environmental factors.
Innovation Solution
An organic optoelectronic component with an electrically conductive elastomer connector that allows for external electrical connection without singulation, providing a robust, disconnectable, and durable connection that can withstand aggressive media, temperature, and humidity, using a conductive elastomer with a modulus of elasticity between 1 N/mm² to 10 N/mm², enabling reversible deformation and maintaining conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external electrical connection is implemented using conventional techniques (ACF bonding, conductive adhesive, soldering), then electrical connection is achieved, but the components must be singulated from the wafer assembly which is cumbersome and may damage components
Solution Approach 1:
The contact section is segmented from the main wafer assembly, allowing it to be separately contacted while remaining part of the wafer. This enables external electrical connection without requiring complete singulation of individual components from the wafer substrate.
Solution Approach 2:
An elastomer connector serves as an intermediary element between the contact section and external electrical contacts. This elastomer layer with conductive structures enables electrical connection while accommodating mechanical flexibility and thermal expansion differences.
2Adaptability or versatility
If conventional external electrical connection methods are used, then connection is established, but the connection cannot be disconnected without limiting or destroying component functions
Solution Approach 1:
The elastomer connector provides dynamic, reversible connection capability. The elastomer material can be deformed to establish contact and return to its original state to disconnect, allowing repeated connection/disconnection cycles without damaging component functions.
Solution Approach 2:
The elastomer connector changes its physical parameters (shape, position) reversibly during connection and disconnection. This parameter change enables the connection to be made and broken without permanent alteration to the component structure.
3Reliability
If rigid electrical connections are used, then electrical conductivity is ensured, but the connection cannot withstand aggressive media, temperature, and humidity effects
Solution Approach 1:
The contact section uses a composite structure combining elastomer material with conductive structures (such as conductive particles, fibers, or layers). This composite provides both electrical conductivity and environmental resistance while maintaining flexibility.
Solution Approach 2:
The elastomer connector acts as a flexible protective layer that shields the electrical connection from aggressive media, temperature variations, and humidity while maintaining electrical contact through its conductive structures.
4Productivity
If wafer-level testing is implemented, then production efficiency is improved, but external electrical connection is required which traditionally requires singulation
Solution Approach 1:
The contact section serves multiple functions: it provides electrical connection for wafer-level testing, enables external contacting of singulated components, and allows reversible connection/disconnection. This multi-functionality eliminates the need for separate testing and final connection processes.
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
Enables simple, robust, and disconnectable external electrical connections in wafer assemblies, allowing for component testing and use without singulation, while maintaining functionality and durability against environmental stressors.
Implementation Method 1
an electrically conductive elastomer connector which is arranged above the contact section and is electrically connected to the contact section
Implementation Method 2
The elastomer connector enables testing and/or measuring the organic optoelectronic components even in the wafer assembly... a robust structure of the organic optoelectronic component having defined contact regions is obtained with the aid of the elastomer connector
Data Source
AI summary
According to the present disclosure, an organic optoelectronic component provides with a first electrode, an organic functional layer structure above the first electrode, a second electrode above the organic functional layer structure, at least one contact section for electrically contacting the organic optoelectronic component, and an electrically conductive elastomer connector which is arranged above the contact section and is electrically connected to the contact section. The contact section is electrically connected to one of the electrodes.