Display Panel Electrode Bonding With Conductive Nanomaterials
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Solution Overview
Problem
Conventional micro-nano LEDs or micro-LED devices often fail to establish good contact with patterned electrodes, leading to lighting failures and compromised display performance in optoelectronic devices.
Innovation Solution
A display panel design featuring a substrate with interdigital body electrodes and conductive electrodes, where a light-emitting device is bonded using conductive nanomaterials to enhance contact between the electrodes, utilizing an electrodeposition method to form conductive patterns that cover leads and body electrodes, thereby improving contact and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional direct bonding method is used between light-emitting device and patterned electrodes, then the manufacturing process is simple, but the contact quality is poor leading to lighting failures
Solution Approach 1:
The patent introduces a conductive electrode layer as an intermediary component between the light-emitting device leads and the patterned body electrodes. This conductive electrode serves as a mediator that improves contact quality and ensures reliable electrical connection, resolving the lighting failure issue while maintaining manufacturing feasibility.
Solution Approach 2:
The patent segments the electrode structure into multiple functional layers: body electrodes for current conduction, conductive electrodes for contact enhancement, and patterned electrodes for device bonding. This segmentation allows each layer to perform its specific function optimally, with the conductive electrode layer specifically addressing the contact quality problem.
2Reliability
If conductive nanomaterials are used to enhance contact, then the conductivity and contact quality improve, but the manufacturing process becomes more complex
Solution Approach 1:
The patent changes the material parameter of the conductive electrode by using conductive nanomaterials instead of conventional conductive materials. This parameter change significantly improves contact reliability and conductivity. The manufacturing complexity is managed by integrating this material change into the existing electrodeposition process framework.
Solution Approach 2:
The patent replaces conventional mechanical or chemical bonding methods with an electrodeposition-based manufacturing approach. This substitution enables precise control of the conductive electrode formation and facilitates the integration of nanomaterials, improving contact reliability while providing a scalable manufacturing process.
3Reliability
If multiple electrode layers are added to improve contact, then the contact quality improves, but the device complexity increases
Solution Approach 1:
The conductive electrode layer is designed to perform multiple functions simultaneously: it serves as a contact enhancement layer, a current conduction path, and a bonding interface. This multi-functionality reduces the need for additional separate structures, thereby improving bonding reliability without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the contact enhancement function with the current conduction function into a single conductive electrode layer. This merging of functions eliminates the need for separate contact layers and current paths, improving bonding reliability while controlling the overall structural 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 ensures reliable contact between the light-emitting device and the electrodes, enhancing the display effect and stability of the panel, while reducing costs through precise conductivity and material efficiency.
Implementation Method 1
utilizing an electrodeposition method to form conductive patterns that cover leads and body electrodes
Data Source
AI summary
A display panel, a manufacturing method thereof, and a bonding structure are provided. The display panel includes a first body electrode and a second body electrode disposed on a same layer on a substrate and disposed oppositely. A first conductive electrode is disposed on the first body electrode. A light-emitting device includes a first lead and a second lead disposed opposite to each other. The first lead is disposed to contact the first body electrode and the first conductive electrode. The second lead contacts the second body electrode.