Curved Electrode Geometry for Light Extraction
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Solution Overview
Problem
Conventional light emitting devices face challenges in optimizing the configuration of electrodes and intermediate portions within the base structure to enhance light emission efficiency and prevent overlapping of electrode surfaces, which can affect the device's performance and assembly.
Innovation Solution
The light emitting device incorporates a base structure with a first and second base surface, featuring a light emitting element with distinct electrodes and an intermediate portion, where the second electrode surface includes a first part extending in a third direction and a second part with curved profiles to avoid overlapping with the first contact surface, allowing for improved light reflection and extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the second electrode surface is positioned close to the first electrode surface to reduce device size, then the device becomes more compact, but the electrode surfaces may overlap causing performance degradation
Solution Approach 1:
The second electrode surface includes a curved surface that extends in the second direction, creating a non-planar geometry that prevents overlapping with the first electrode surface while maintaining compact dimensions. The curvature allows the electrode to fit within a smaller volume without compromising electrical performance or causing short circuits.
Solution Approach 2:
The electrode configuration transitions from a two-dimensional planar arrangement to a three-dimensional structure by extending the second electrode surface in the second direction with curvature. This dimensional change allows both electrodes to coexist in close proximity without overlapping, resolving the contradiction between compact size and performance reliability.
2Productivity
If the second electrode surface is extended to improve light extraction efficiency, then light emission performance is enhanced, but the electrode may overlap with the first contact surface
Solution Approach 1:
The curved surface of the second electrode allows it to extend further into the device structure to improve light extraction efficiency while the curvature itself prevents planar overlap with the first contact surface. This geometric solution enables extended electrode functionality without compromising manufacturing precision or causing assembly conflicts.
Solution Approach 2:
The second electrode surface is designed with asymmetric curvature that extends preferentially in the second direction away from the first contact surface region. This asymmetric configuration allows the electrode to achieve enhanced light extraction performance while maintaining clear spatial separation from the first contact surface, avoiding manufacturing and assembly issues.
3Illumination intensity
If the second electrode surface is positioned to optimize light reflection, then light extraction is improved, but the electrode configuration becomes more complex
Solution Approach 1:
The curved surface of the second electrode serves multiple functions simultaneously: it optimizes light reflection and extraction by creating favorable optical paths, while the continuous curved geometry remains relatively simple to manufacture. This single geometric feature achieves optical optimization without requiring complex multi-component electrode structures.
Solution Approach 2:
The curved second electrode surface performs multiple functions: it provides electrical contact, optimizes light extraction through reflective geometry, prevents overlapping with other components, and maintains structural integrity. This multi-functional design achieves light extraction optimization without significantly increasing device complexity, as one component fulfills multiple roles.
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 configuration enhances light emission efficiency by preventing overlapping and optimizing the placement of electrodes, leading to better light reflection and extraction, thereby improving the overall performance of the light emitting device.
Implementation Method 1
At least part of the second part has a curved profile extending from the first part when viewed in the first direction... allowing for improved light reflection and extraction
Data Source
AI summary
A light emitting device includes a base structure and a light emitting element. The light emitting element includes a first electrode and a second electrode. The first electrode includes a first electrode surface. The second electrode is separately provided from the first electrode. The second electrode includes a second electrode surface. The second electrode surface is spaced apart from the first electrode surface in a second direction different from a first direction. The second electrode surface includes a first part and a second part. The first part extends in a third direction different from each of the first direction and the second direction. The second part extends from the first part in the second direction. At least part of the second part has a curved profile extending from the first part when viewed in the first direction.