LED Device with Shared Semiconductor Layers for High Resolution Displays
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Solution Overview
Problem
Conventional LED displays face challenges in achieving high resolution due to the need for individually diced sub-pixels and high production costs, with existing technologies unable to efficiently produce high-resolution displays while maintaining low costs.
Innovation Solution
A light emitting diode device comprising a substrate with a first and second sub-light emitting unit, where the sub-units share semiconductor layers of different conductivity types, allowing for reduced pixel area and independent control of light emission, effectively enhancing display resolution and production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional LED displays use individually diced sub-pixels, then each pixel can be controlled independently, but the production cost increases and resolution is limited
Solution Approach 1:
The patent combines multiple sub-light emitting units (first, second, and third sub-units) into a single integrated LED device structure. These sub-units share common semiconductor layers (n-type and p-type layers) and are disposed at different heights, allowing independent light emission control while reducing manufacturing complexity and cost compared to individually diced sub-pixels
Solution Approach 2:
The patent introduces vertical dimensionality by disposing sub-light emitting units at different heights above the substrate. The first sub-unit is at a first height, the second sub-unit at a second height, and the third sub-unit at a third height, creating a three-dimensional structure that enables independent control of multiple light emitting regions within a single device footprint
2Area of stationary object
If multiple sub-pixels are integrated in a single LED device, then the pixel area is reduced, but the structural complexity increases
Solution Approach 1:
Multiple sub-light emitting units are merged into a single device structure, sharing common n-type and p-type semiconductor layers. This integration reduces the overall pixel area while managing structural complexity through shared components rather than completely separate structures
Solution Approach 2:
The common semiconductor layers serve multiple functions by being shared among different sub-light emitting units. The n-type layer and p-type layer are used by all sub-units, reducing the total material requirements and simplifying the manufacturing process while enabling multiple light emitting functions within one device
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 reduces the area occupied by each pixel, improving display resolution and lowering production costs by enabling the light emitting diode device to function as multiple monochromatic devices, thereby increasing efficiency and reducing costs.
Implementation Method 1
light emitting diode device, comprising: a substrate; a first sub-light emitting unit disposed on the substrate
Implementation Method 2
a first light emitting layer, and a second light emitting layer
Data Source
AI summary
A light emitting diode device, an array substrate and a display device. The light emitting diode device includes a substrate, a first sub-light emitting unit disposed on the substrate, and a second sub-light emitting unit disposed on a side of the first sub-light emitting unit away from the substrate. The first sub-light emitting unit includes a first semiconductor layer of a first conductivity type, a first light emitting layer, and a second semiconductor layer of a second conductivity type which are each disposed successively in a direction away from the substrate. The second sub-light emitting unit includes the second semiconductor layer, a second light emitting layer, and a third semiconductor layer of the first conductivity type. Each layer is disposed successively in the direction away from the substrate. The first conductivity type is different from the second conductivity type.