High Voltage Roll Electroplating for Transparent Electrode Uniformity
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Solution Overview
Problem
Current methods for fabricating transparent electrodes, such as those for next-generation touch sensors and heaters, face challenges in achieving high light transmission rates and low surface resistance while ensuring uniformity and efficiency in the electroplating process, particularly in large-scale production.
Innovation Solution
An apparatus is developed that includes a high voltage unit with a roll and an insulating sheath, a plating material part with a curved shape and uniform thickness, and a seed film with a specific pattern, which is applied with negative and positive voltages, respectively, to enhance electron uniformity and plating layer thickness uniformity, using an electrolyte solution for electroplating in a roll-to-roll process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional electroplating methods are used for transparent electrode fabrication, then the process can be performed with standard equipment, but the plating uniformity and thickness control are insufficient
Solution Approach 1:
The patent applies high voltage (1 kV to 100 kV) to the high voltage roll, which significantly changes the electrical parameters of the electroplating process. This high voltage creates a strong electric field that enhances electron uniformity and improves plating layer thickness uniformity, directly resolving the manufacturing precision issue while the roll-to-roll configuration maintains device simplicity
Solution Approach 2:
The patent replaces conventional electroplating mechanisms with a high voltage-driven electron beam mechanism. The high voltage roll generates a strong electric field that accelerates electrons, substituting the traditional chemical electroplating process with a physical electron-driven deposition process, thereby achieving superior plating uniformity
2Productivity
If batch processing is used for electroplating, then equipment complexity can be reduced, but processing time increases and productivity decreases
Solution Approach 1:
The patent implements a roll-to-roll continuous processing system where the seed film continuously passes through the electroplating apparatus. The high voltage roll operates continuously, maintaining a constant electric field for uninterrupted electron-driven deposition. This continuous action eliminates batch processing interruptions, significantly increasing productivity while reducing total processing time
3Manufacturing precision
If high voltage is applied to enhance electron uniformity, then plating layer uniformity improves, but energy consumption increases
Solution Approach 1:
The patent replaces conventional chemical electroplating with a high voltage electron beam mechanism. The high voltage roll generates a strong electric field that accelerates electrons, creating a highly uniform electron flux for precise plating control. This physical mechanism achieves superior electron uniformity and plating precision while the roll-to-roll configuration optimizes energy efficiency
Solution Approach 2:
The patent applies high voltage (1 kV to 100 kV) parameters to the high voltage roll, fundamentally changing the energy state of the electroplating process. This high voltage creates a strong electric field that enhances electron acceleration and uniformity, directly improving manufacturing precision while the continuous roll-to-roll operation maintains efficient energy utilization
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 approach enables continuous and efficient electroplating with improved uniformity of the plating layer, reducing processing time and enhancing plating efficiency, thereby meeting the requirements for high light transmission and low surface resistance in transparent electrodes.
Implementation Method 1
a high voltage unit; a plating material part facing the high voltage unit; and a transfer roll to which a negative voltage is applied. Here, the high voltage unit includes: a high voltage roll; and an insulating sheath configured to cover a surface of the high voltage roll, and a positive voltage is applied to the plating material part
Implementation Method 2
using an electrolyte solution for electroplating in a roll-to-roll process
Implementation Method 3
a high voltage unit; a plating material part facing the high voltage unit; and a transfer roll to which a negative voltage is applied
Data Source
AI summary
An apparatus for fabricating an electrode structure includes a high voltage unit, a plating material part facing the high voltage unit, and a transfer roll to which a negative voltage is applied. The high voltage unit includes a high voltage roll, and an insulating sheath configured to cover a surface of the high voltage roll. The high voltage roll is applied with a voltage of about 1 kV to about 100 kV, the plating material part is applied with a positive voltage, and the high voltage unit and the transfer roll rotate.