OLED Storage Plate Segmentation for Signal Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In organic light emitting diode (OLED) displays, the non-doping regions in the first storage plate can lead to signal interception, affecting the performance of the capacitor and overall display functionality.
Innovation Solution
The manufacturing method involves forming a first storage plate with a line pattern and non-doping regions, and a second doping region connected to the first doping region through gaps, with an interlayer insulating layer creating a storage plate opening to expose the second storage plate, and using erosion preventing layers to prevent separation of the doping regions, thereby enhancing signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first storage plate is formed with non-doping regions, then the capacitor structure is formed, but signal interception occurs affecting capacitor performance
Solution Approach 1:
The first storage plate is segmented into multiple doping regions (first doping region and second doping region) separated by non-doping regions. The erosion preventing layers are also segmented and positioned at specific locations to selectively protect certain areas during impurity injection, allowing the second doping region to be formed without being blocked by the capacitor intermediate structure
Solution Approach 2:
Erosion preventing layers are introduced as intermediary protective structures during the manufacturing process. These layers prevent the capacitor intermediate from eroding the interlayer insulating layer during impurity injection, while still allowing impurities to pass through to form the second doping region. This intermediary structure resolves the conflict between maintaining structural integrity and enabling signal transmission
2Manufacturing precision
If erosion preventing layers are used to protect the interlayer insulating layer, then structural integrity is maintained, but the manufacturing process becomes more complex
Solution Approach 1:
The erosion preventing layers are merged with the capacitor intermediate structure, forming an integrated composite structure. This combination allows the erosion preventing function to be achieved without adding completely separate manufacturing steps, as the erosion preventing layers are formed as part of the capacitor intermediate formation process
Solution Approach 2:
The erosion preventing layers are formed in advance before the impurity injection process. This preliminary action ensures that the interlayer insulating layer is protected from erosion before the actual doping occurs, allowing the manufacturing process to proceed smoothly without damage to critical structures
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 minimizes signal interception and improves the performance of the capacitor by ensuring effective connection and transmission between the first and second doping regions, enhancing the overall functionality of the OLED display.
Implementation Method 1
The capacitor includes a first storage plate and a second storage plate on the first storage plate with a gate insulating layer therebetween
Implementation Method 2
The first storage plate includes: a first doping region; a plurality of non-doping regions contacting the first doping region; and a second doping region contacting the first doping region through gaps between the non-doping regions
Data Source
AI summary
Making an OLED display, includes forming a first storage plate and a gate insulating layer covering the first storage plate on a substrate; sequentially forming a second storage plate covering the first storage plate and a capacitor intermediate on the gate insulating layer; forming a first doping region by injecting an impurity to a part that is not covered by the capacitor intermediate in the first storage plate; forming an interlayer insulating layer having a capacitor opening exposing the capacitor intermediate, and a plurality of erosion preventing layers on an edge of the capacitor intermediate toward the first doping region in the capacitor opening; removing the capacitor intermediate including the erosion preventing layer and a lower region of the erosion preventing layer, and injecting an impurity in the first storage plate through the second storage plate to form a second doping region contacting the first doping region.