OLED Cathode Tip Structure Electrostatic Discharge Connection
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Solution Overview
Problem
Existing OLED display panel manufacturing methods face challenges in achieving low square resistance and high production efficiency due to the difficulty in electrically connecting the cathode layer to the auxiliary cathode, often requiring costly laser devices and complex processes that result in poor electrical connection quality and low yield.
Innovation Solution
A manufacturing method involving the formation of an auxiliary cathode layer, tip structures, and a main cathode layer, where electrical connections are established by discharging at the tip structures using voltage polarity differences or static electricity, allowing for direct electrical connection between the main and auxiliary cathode layers without the need for laser devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser devices are used to connect the cathode layer to the auxiliary cathode, then electrical connection can be achieved, but the manufacturing cost increases and the process becomes complex
Solution Approach 1:
The patent extracts the essential function of electrical connection from the complex laser device system and implements it through a simplified electrostatic discharge mechanism using tip structures on the auxiliary cathode, eliminating the need for costly laser equipment while maintaining connection reliability
Solution Approach 2:
The patent replaces expensive laser devices with a low-cost electrostatic discharge approach using simple tip structures that can be formed through standard semiconductor processing, significantly reducing manufacturing equipment costs
2Reliability
If laser devices are used to connect the cathode layer to the auxiliary cathode, then electrical connection can be achieved, but production efficiency decreases
Solution Approach 1:
The patent performs preliminary action by forming tip structures on the auxiliary cathode during the cathode formation process itself, so that when electrostatic discharge occurs, the electrical connection is already optimized for high-speed formation, greatly improving production efficiency
Solution Approach 2:
The patent replaces the mechanical/optical laser system with an electrostatic field-based discharge mechanism, which operates faster and is more compatible with high-volume semiconductor manufacturing processes
3Illumination intensity
If the cathode layer is made thinner to improve light transmittance, then optical performance improves, but square resistance increases
Solution Approach 1:
The patent transitions from a single-layer cathode structure to a multi-dimensional structure with an auxiliary cathode layer and tip structures, creating vertical electrical connection paths that reduce square resistance without affecting the horizontal light transmittance of the main cathode layer
Solution Approach 2:
The patent introduces tip structures as intermediary elements between the main cathode layer and auxiliary cathode, creating efficient electrical connection pathways that compensate for the reduced thickness of the main cathode, thereby maintaining low square resistance while preserving optical performance
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 method simplifies the production process, improves electrical conduction quality, reduces costs, and enhances production efficiency by directly connecting the cathode layers, thereby reducing square resistance and increasing yield.
Implementation Method 1
forming at least one connection between the main cathode layer and the auxiliary cathode layer by discharging at the at least one tip structure
Data Source
AI summary
The present disclosure provides a display panel, a manufacturing method of the display panel, and a display device. The manufacturing method includes: forming an auxiliary cathode layer; forming at least one tip structure on the auxiliary cathode layer; forming a main cathode layer, wherein the at least one tip structure is between the auxiliary cathode layer and the main cathode layer; and forming at least one connection between the main cathode layer and the auxiliary cathode layer by discharging at the at least one tip structure, wherein the at least one connection is electrically connected to the main cathode layer and the auxiliary cathode layer respectively.