Opposed Light-Emitting Element Layout for Uniform Pixel Emission
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Solution Overview
Problem
Existing light emitting elements struggle to serve as effective light sources in pixels regardless of pixel design.
Innovation Solution
A light emitting element comprising a first light emitting element and a second light emitting element, both with semiconductor layers, an active layer, and an electrode layer, disposed in opposite directions, and surrounded by an insulative film to ensure effective light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light emitting element is used in a pixel, then the pixel structure is simple, but the light emission uniformity and reliability are insufficient
Solution Approach 1:
The pixel is divided into multiple light emitting elements (first and second light emitting elements) with different orientations. Each element is independently structured with semiconductor layers, active layers, and electrode layers, allowing them to function as separate light sources that collectively improve emission uniformity while maintaining reasonable pixel structure complexity
2Reliability
If light emitting elements are arranged in opposite directions, then light emission uniformity is improved, but the device structure becomes more complex
Solution Approach 1:
The first and second light emitting elements are arranged in opposite directions (first direction and second direction respectively) within the pixel. This asymmetric arrangement ensures that regardless of the pixel's orientation or viewing angle, at least one light emitting element will be effectively oriented to provide uniform light emission, thereby improving reliability while managing structural complexity
3Manufacturing precision
If insulative film is added to surround light emitting elements, then manufacturing precision is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The insulative film is integrated into the manufacturing process by forming it to simultaneously surround both the first and second light emitting elements. This merging approach allows the insulative film to serve multiple functions (isolating both elements, defining their structures, and filling spaces between them) in a single manufacturing step, thereby improving manufacturing precision while minimizing the increase in process complexity
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 provides a reliable and effective light source for pixels, ensuring sufficient and uniform light emission regardless of pixel design.
Implementation Method 1
an insulative film surrounding a portion of the first light emitting element and a portion of the second light emitting element
Implementation Method 2
a first light emitting element including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially disposed in a first direction
Data Source
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AI summary
A light emitting element includes a first light emitting element including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially disposed in a first direction; a second light emitting element including a first semiconductor layer, an active layer, and a second semiconductor layer, which are spaced apart from the first light emitting element and sequentially disposed in a reverse direction of the first direction; and an insulative film surrounding a portion of the first light emitting element and a portion of the second light emitting element.