Quantum Dot Display Aging via Acid Ink in Dummy Printing Area
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Solution Overview
Problem
Existing display device manufacturing processes are complex and inefficient, particularly in acid treatment, which hinders the production of large-area display devices.
Innovation Solution
Incorporating an acid ink with a polymer resin and acid material, such as methacrylic acid or citric acid, in a dummy printing area of the non-display region to age the light emitting elements, thereby simplifying the process and improving performance without additional structural additions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional acid treatment process is used for aging light emitting elements, then the performance of the light emitting elements can be improved, but the manufacturing process becomes complex and inefficient
Solution Approach 1:
The patent combines the acid treatment function with the existing dummy printing area structure by depositing acid-containing ink in the dummy printing area. This merging of functions eliminates the need for separate acid treatment processes and structures, thereby improving light emitting element performance while avoiding manufacturing process complexity
Solution Approach 2:
The dummy printing area is given multiple functions: it serves as both a structural element of the display device and a source of acid vapor for aging the light emitting elements. The acid-containing ink in the dummy printing area provides acid treatment functionality without requiring additional dedicated structures or processes
2Reliability
If additional acid treatment structures are added to the display device, then the aging effect on light emitting elements can be enhanced, but the device structure becomes more complex
Solution Approach 1:
The acid treatment function is merged with the existing dummy printing area by depositing acid-containing ink there. This combination enhances the aging effect on light emitting elements while avoiding the need for additional acid treatment structures, thus preventing device structure complexity
3Productivity
If a simplified acid treatment process is used, then manufacturing efficiency is improved, but the performance enhancement of light emitting elements may be insufficient
Solution Approach 1:
The dummy printing area with acid-containing ink provides self-service acid treatment functionality within the display device structure. This integrated approach achieves both manufacturing efficiency improvement and sufficient performance enhancement of light emitting elements through the self-generated acid vapor environment
Solution Approach 2:
The acid-containing ink in the dummy printing area serves multiple purposes: it provides the necessary acid treatment for light emitting element performance enhancement while being integrated into the existing manufacturing process flow, thereby achieving both performance improvement and manufacturing efficiency
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 acid vapor from the ink enhances the performance of the light emitting elements, reduces defects, and allows for efficient manufacturing of large-area display devices with improved efficiency and lifespan.
Implementation Method 1
the acid ink may discharge acid vapor
Data Source
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AI summary
A display device includes a substrate including a display area and a non-display area, a light emitting element disposed in the display area and a dummy printing area disposed in the non-display area, wherein the light emitting element includes quantum dots, and wherein an acid ink is disposed in the dummy printing area.