OLED Current Distribution Structure for Independent Inner Element Control
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Solution Overview
Problem
Current OLED technologies face challenges in driving inner OLED elements independently without disrupting the luminous image or appearance of outer areas, as existing current distribution structures are not effective in isolating and powering inner luminous regions without visible external structures.
Innovation Solution
An optoelectronic component with a current lead structure that mimics the current distribution structure, allowing for independent operation of inner functional areas by being electrically insulated from the outer structure, enabling homogeneous luminosity and efficient current feeding or carrying away without visible external components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If inner OLED elements are driven with current leads, then current can be supplied to inner functional areas, but the current leads disturb the luminous image and appearance of outer luminous areas
Solution Approach 1:
The current lead structure is extracted and integrated into the current distribution structure itself. The patent creates a unified structure where current distribution and current leading functions are combined, eliminating the need for separate visible current leads that would disturb the luminous image. The current distribution structure serves dual purposes: distributing current across the OLED area and providing current paths to inner elements without visible external structures.
2Ease of operation
If a current distribution structure is used to supply current uniformly, then current distribution is improved, but the structure becomes visible and disturbs the luminous image
Solution Approach 1:
The patent merges the current distribution structure with the current lead structure into a single integrated system. The current distribution structure includes both outer substructure (for uniform current distribution) and inner substructure (for supplying current to inner elements), which are electrically insulated from each other but form a unified visible structure. This integration allows current distribution and current leading functions to be performed simultaneously without requiring separate visible components.
Solution Approach 2:
The current distribution structure has different local properties: the outer substructure is optimized for uniform current distribution across the OLED area, while the inner substructure is optimized for supplying current to inner functional elements. The electrically conductive material is arranged with specific local geometries and insulation patterns to achieve different functional qualities in different regions of the same structure.
3Adaptability or versatility
If inner functional areas are completely surrounded by outer functional areas, then self-contained inner luminous regions are achieved, but current supply becomes complex
Solution Approach 1:
The current distribution structure serves multiple functions simultaneously: it distributes current uniformly across the entire OLED area, supplies current specifically to inner functional elements, and provides electrical insulation between different functional areas. The same outer substructure and inner substructure work together to achieve both uniform current distribution and targeted current supply to inner elements, reducing the need for additional complex current lead structures.
Data Source
AI summary
An optoelectronic component may include a first electrode having one outer electrode segment formed at a lateral edge of the first electrode, and one inner electrode segment formed apart from the lateral edge of the first electrode, an electrically conductive current distribution structure formed above the first electrode and having one outer substructure extending over the outer electrode segment, and one inner substructure extending over the inner electrode segment and electrically insulated from the outer substructure, one current lead extending from the lateral edge of the first electrode toward the inner substructure, electrically coupled to the inner substructure, electrically insulated from the outer substructure and which structure corresponds to the current distribution structure, an insulation structure, which covers the current distribution structure and the current lead, an organic functional layer structure, and a second electrode above the organic functional layer structure.