Multi-Color LED Pixel Structure for Simpler Micro-LED Assembly
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Solution Overview
Problem
Conventional LED display panels require a complex and costly process to assemble multiple color LEDs, leading to increased power consumption, decreased luminance, and color issues.
Innovation Solution
A multi-color light emitting pixel unit is developed, comprising multiple types of LEDs with shared conductive layers and micro-gap structures, allowing for simultaneous fabrication and improved light emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple color LEDs are assembled one by one on a substrate using metal wires or connecting electrodes, then each LED can be individually connected, but the process becomes complicated, processing difficulty increases, and production cost increases
Solution Approach 1:
The patent merges multiple separate LED assembly processes into a single integrated process. Multiple color LEDs are assembled simultaneously on the substrate using a unified method with shared connecting electrodes, eliminating the need for separate metal wire bonding or electrode connection processes for each LED color. This integration directly reduces process complexity and manufacturing steps.
Solution Approach 2:
The patent implements universal connecting electrodes that serve multiple functions: they connect multiple different color LEDs simultaneously, provide electrical connections for various LED types, and eliminate the need for color-specific connection processes. This multi-functional approach simplifies the overall manufacturing process and reduces the number of specialized components needed.
2Use of energy by moving object
If multiple color LEDs are assembled one by one on a substrate, then each LED can be individually connected, but power consumption increases and luminance and color performance decrease
Solution Approach 1:
The patent combines multiple LED types into integrated pixel units with shared electrical connections. By merging the electrical pathways and using common connecting electrodes for multiple LEDs, the system reduces redundant current paths and electrical resistance, thereby lowering overall power consumption while maintaining or improving light output efficiency.
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 simplifies the manufacturing process, reduces production costs, and enhances the light emission efficiency and color accuracy of the micro-LED display panel.
Implementation Method 1
a first type of light emitting layer, a second type of light emitting layer, a third type of light emitting layer... each light emitting layer is different from the other light emitting layers... capable of emitting light of a different color from the other light emitting layers when a forward voltage is applied thereto
Implementation Method 2
Under a positive bias, holes flow from a P region into an N region and electrons flow from the N region into the P region, and the combination between the electrons in the N region and the holes in the P region produces spontaneous radiation of excitation light
Data Source
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AI summary
A multi-color light emitting pixel unit (1000) includes a first type of light emitting transistor formed on a substrate (100) and including a first segment of a first metal layer (101-1) and a first segment of a first type of light emitting layer (102-1) in an order from bottom to top, and a second type of light emitting transistor formed on the substrate (100) and including a second segment of the first metal layer (101-2), a second segment of the first type of light emitting layer (102-2), a first segment of a second metal layer (201-1), a first segment of a second type of light emitting layer (202-1) in an order from bottom to top, and a first electrical connector (203) connecting the second segment of the first metal layer (101-2) and the first segment of the second metal layer (201-1).