Quantum Dot Display Acid Ink Aging in Dummy Printing Areas
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display device manufacturing processes are complex and inefficient, particularly in the acid treatment stage, 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 improving their performance and efficiency without additional processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate acid treatment process is used to age light emitting elements, then the performance of light emitting elements is improved, but the manufacturing process complexity increases and production efficiency decreases
Solution Approach 1:
The patent combines the acid treatment function with the existing dummy printing area by depositing acid-containing ink there. This merging of functions eliminates the need for a separate acid treatment process, thereby reducing manufacturing process complexity while maintaining the performance improvement benefits of acid treatment.
Solution Approach 2:
The dummy printing area is given multiple functions: it serves as both a placeholder for display patterns and as a source for acid treatment through the deposited acid-containing ink. This multi-functionality reduces the number of separate process steps needed while achieving the desired aging effect on light emitting elements.
2Reliability
If a separate acid treatment process is implemented, then light emitting element performance is enhanced, but production time and efficiency are reduced
Solution Approach 1:
The acid-containing ink is deposited in the dummy printing area during the existing manufacturing process sequence, performing the acid treatment preparation in advance. This preliminary action integrates the treatment into the normal production flow without requiring additional dedicated time for separate acid treatment operations.
Solution Approach 2:
The patent merges the acid treatment step with the existing dummy printing area utilization, combining multiple functions into a single integrated process step that enhances performance without extending production time.
3Productivity
If acid ink is disposed in the dummy printing area, then the manufacturing process is simplified and efficiency is increased, but the complexity of ink composition and placement increases
Solution Approach 1:
The acid-containing ink is selectively deposited only in the dummy printing area, which is a localized region with specific properties. This local application ensures that the acid treatment is concentrated where needed without affecting other areas, simplifying the overall process while maintaining controlled composition and placement.
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
Simplifies the manufacturing process by eliminating the need for additional aging processes, enhances the performance of light emitting elements, and allows for the production of large-area display devices.
Implementation Method 1
the acid ink may discharge acid vapor
Data Source
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.