OLED Electrode Fuse Structure for Short Circuit Isolation
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Solution Overview
Problem
Current OLED technologies face challenges in increasing light emission quantity without reducing component life or causing short circuits, and the production of large OLEDs with serial connections is complex and costly.
Innovation Solution
A light-emitting organic component with an electrode structure featuring overlapping electrode sections and an electrical safety structure that self-isolates when a short occurs, allowing for continued operation by interrupting the electrical connection at increased current levels, and a method for producing such components with simplified processing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the active area of OLED is increased to increase light emission quantity, then the total light output increases, but the component life decreases and short circuits occur due to increased current flow
Solution Approach 1:
The electrode is divided into multiple electrode sections (first electrode section, second electrode section, third electrode section) that can be independently connected or disconnected. This segmentation allows the OLED to maintain high light emission quantity across the entire active area while providing isolated paths that prevent complete failure when shorts occur, thus maintaining reliability.
2Quantity of substance
If the active area of OLED is increased to increase light emission quantity, then the total light output increases, but the current flow increases causing temperature rise and efficiency losses
Solution Approach 1:
The electrode connection structure is designed to be dynamically reconfigurable through the fuse mechanism. Under normal operation, all electrode sections are connected to maximize current flow and light output. When a short occurs, the fuse automatically disconnects the affected section, dynamically adjusting the electrical configuration to maintain efficiency and prevent excessive energy loss.
3Use of energy by moving object
If serial connection of multiple OLED elements is used to reduce operating current, then the operating current decreases, but the device complexity increases due to structuring requirements
Solution Approach 1:
The patent combines multiple electrode sections into a single integrated electrode structure that functions as one continuous component during normal operation. This merging approach eliminates the need for complex serial connections between separate OLED elements, reducing production complexity while still enabling current reduction through the fuse-based disconnection mechanism when needed.
4Quantity of substance
If a single large OLED area is used, then the light emission quantity increases, but the luminous power is significantly reduced after short formation
Solution Approach 1:
The electrode is segmented into multiple independent sections that can be selectively disconnected. When a short occurs in one section, the fuse mechanism disconnects only the affected section while keeping other sections operational. This ensures that the majority of the large OLED area continues to emit light, maintaining high luminous power despite the short circuit.
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 enhances failure behavior in OLEDs by ensuring continued operation after shorts occur, reducing efficiency losses and production complexity, while maintaining light emission and simplifying the production process.
Implementation Method 1
The electrical safety structure is implemented in such a way that in the case of a short, the electrical connection is interrupted by melting
Implementation Method 2
light-emitting organic component, in particular a light-emitting diode, having an electrode and a counter electrode and an organic region located between the electrode and the counter electrode
Data Source
AI summary
The invention relates to a light-emitting organic component, in particular a light-emitting organic diode, having an electrode and a counter electrode and an organic region located between the electrode and the counter electrode, the electrode having electrode sections, each of which are implemented at least partially overlapping and in contact with the organic region and which are electrically connected with each other by means of one or more further electrode sections, forming the electrode, and the electrode having an electrical safety structure allocated to the electrode sections. Furthermore, the invention relates to a method for the production of a light-emitting organic component, an array with several light-emitting organic components and an electrode structure for an electronic component.