Display Panel Signal Line Protection During Isolation Structure Formation
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Solution Overview
Problem
Current organic light emitting display panels face issues with signal integrity due to potential damage to signal lines in the non-display regions during the manufacturing process.
Innovation Solution
The display panel design includes a base plate, a wiring layer with a metal layer in the display region and a signal line layer in the non-display region, and an isolation structure with an isolation opening to accommodate light-emitting units. A protection portion is added to the signal line layer to prevent erosion during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the signal line layer is manufactured before the isolation structure, then the manufacturing process can be simplified and productivity improved, but the signal line layer is vulnerable to erosion and damage during subsequent manufacturing processes
Solution Approach 1:
A protection portion is formed on the signal line layer before the isolation structure is manufactured. This preliminary protective measure ensures that the signal line layer is shielded from erosion during subsequent isolation structure formation processes, allowing the signal line layer to be manufactured early without compromising its integrity
Solution Approach 2:
The protection portion acts as an intermediary layer between the signal line layer and the isolation structure. It prevents direct contact and potential erosion from etching solutions or mechanical processes during isolation structure formation, while still allowing the manufacturing sequence to be optimized for productivity
2Manufacturing precision
If the isolation structure is formed after the signal line layer, then the light-emitting units can be properly isolated, but the signal line layer may be eroded by etching solutions or damaged during isolation structure formation
Solution Approach 1:
The protection portion serves as a protective intermediary that shields the signal line layer from harmful etching solutions used during isolation structure formation. It allows the isolation structure to be precisely formed while preventing the signal line layer from being eroded or damaged
Solution Approach 2:
The protection portion is a temporary, disposable protective layer that is formed specifically for the duration of the isolation structure formation process. After serving its protective function, it can be removed or left as part of the final structure, having fulfilled its purpose of preventing erosion during the critical manufacturing step
Data Source
AI summary
A display panel, a method for manufacturing a display panel, and a display apparatus. The display panel includes a display region, a non-display region at least partially surrounding the display region, and further includes a base plate, a wiring layer, a light-emitting layer, and an isolation structure. The wiring layer is located on a side of the base plate and includes a metal layer located in the display region and a signal line layer located in the non-display region. The light-emitting layer is located on a side of the wiring layer away from the base plate and includes a plurality of light-emitting units. The isolation structure is located on a side of the wiring layer away from the base plate and is provided with an isolation opening configured to accommodate the light-emitting unit.