LED Device Partition Layer Reduces Optical Interference
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Solution Overview
Problem
Existing LED devices face challenges in generating multi-color displays with high resolution while minimizing the size of the display device and suppressing optical interferences between pixels.
Innovation Solution
The LED device incorporates multiple light-emitting cells with separation and phosphor layers, each emitting different colors, and a partition layer to electrically insulate and separate the cells, reducing optical interferences and enabling multi-color displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light-emitting cells are mounted closely to improve resolution, then display resolution is improved, but optical interferences between pixels increase
Solution Approach 1:
The patent introduces a partition layer as an intermediary structure between adjacent light-emitting cells. This partition layer includes a light blocking structure that prevents optical interference (harmful effect) while allowing the cells to remain closely spaced for high resolution. The partition layer acts as a mediator that enables close spacing without suffering from the negative effects of optical interference.
2Measurement precision
If the size of the display device is reduced to improve resolution, then display resolution is improved, but device size is reduced
Solution Approach 1:
The patent divides the display device into multiple segmented light-emitting cells arranged in a matrix pattern. Each cell is a discrete unit with its own light-emitting structure and phosphor layer. This segmentation allows the device to achieve high resolution through the arrangement of multiple small units rather than requiring a large continuous area, thus improving resolution while controlling overall device size.
3Object-generated harmful factors
If light-blocking structures are added to reduce optical interferences, then optical interferences are reduced, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into the partition layer structure. The partition layer simultaneously serves as: (1) a light blocking structure to prevent optical interference, (2) a structural support element to maintain cell spacing, and (3) an insulating layer. By combining these functions into a single integrated structure rather than adding separate components, the patent reduces optical interference while minimizing the increase in device 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
This configuration allows for efficient generation of multi-color displays with improved resolution and reduced optical interferences, enhancing the performance of LED devices in display applications.
Implementation Method 1
a plurality of phosphor layers on second surfaces separate, respective light-emitting structures of the plurality of light-emitting structure, each phosphor layer configured to filter a different color of light from light emitted by the light-emitting structures
Implementation Method 2
the partition layer including at least one of a substrate structure, an insulation structure, and a light reflecting structure
Data Source
AI summary
A light-emitting diode (LED) device configured to provide a multi-color display includes a plurality of light-emitting cells at least partially defined by a partition layer. The LED device may be configured to reduce optical interferences between the light-emitting cells. The LED device includes a plurality of light-emitting structures spaced apart from one another; a plurality of electrode layers on respective first surfaces of the light-emitting structures, a separation layer configured to electrically insulate the light-emitting structures from each other; phosphor layers on respective second surfaces of the light-emitting structures and associated with different colors, and a partition layer between the phosphor layers to separate the phosphor layers from one another. Each light-emitting cell may include a separate light-emitting structure, a separate set of one or more electrodes, and a separate phosphor layer.