Quantum Dot Display Banks With Auxiliary Openings for Flow Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display apparatuses face a high likelihood of defects during manufacturing due to the presence of color conversion patterns, which are not adequately addressed in existing technologies.
Innovation Solution
The display apparatus incorporates a first substrate with banks featuring distinct openings and auxiliary openings partitioned by thicker partition walls, containing quantum dot layers that convert light of specific wavelength bands, and a transmissive layer, with auxiliary spaces designed to minimize material flow and enhance structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If color conversion patterns are used in display apparatus, then full color display capability is improved, but manufacturing defects increase
Solution Approach 1:
The bank structure is segmented into multiple functional regions including first openings for red quantum dots, second openings for green quantum dots, third openings for blue light transmission, and auxiliary openings for material compensation. This segmentation allows independent control and filling of each color region, reducing manufacturing defects while maintaining full color display capability.
Solution Approach 2:
Auxiliary openings are pre-formed in the bank structure before quantum dot material deposition. These auxiliary openings serve as predetermined pathways for material flow and compensation, ensuring that manufacturing defects can be corrected during the filling process without requiring rework of the entire structure.
2Strength
If partition wall thickness is increased to prevent material flow, then structural integrity is improved, but manufacturing complexity increases
Solution Approach 1:
Different partition wall thicknesses are used in different regions of the bank structure. Main partition walls separating primary color regions have sufficient thickness for structural integrity, while auxiliary partition walls in compensation regions have reduced thickness to facilitate controlled material flow. This localized differentiation maintains strength where needed while enabling manufacturing flexibility.
Solution Approach 2:
Auxiliary openings with thinner partition walls act as intermediary channels that mediate between the requirement for strong main partition walls and the need for material flow control. These intermediary structures provide controlled pathways for material compensation without compromising the structural integrity of the primary partition walls.
3Manufacturing precision
If auxiliary openings are added to control material flow, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The auxiliary openings are further segmented into multiple auxiliary spaces within each auxiliary opening region. This segmentation creates discrete compensation zones that can independently receive and distribute materials, improving precision in material placement while keeping each individual auxiliary space simple in structure.
Solution Approach 2:
Multiple auxiliary spaces are nested within the auxiliary opening regions of the bank structure. This nested arrangement allows complex material flow control functionality to be achieved within a compact structure, improving manufacturing precision without proportionally increasing overall device complexity.
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 design significantly reduces manufacturing defects by controlling material flow and optimizing light conversion, thereby improving the reliability and efficiency of the display apparatus.
Implementation Method 1
The first quantum dot layer may be configured to convert light having a wavelength belonging to a first wavelength band into light having a wavelength belonging to a second wavelength band
Implementation Method 2
the second quantum dot layer may be configured to convert light having a wavelength belonging to a first wavelength band into light having a wavelength belonging to a third wavelength band
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display apparatus includes a first substrate; a bank on the first substrate, the bank including first openings, second openings, third openings, and auxiliary openings, wherein a thickness of a partition wall defining the first openings, the second openings, and the third openings is greater than a thickness of an auxiliary partition wall arranged in the auxiliary opening; a first quantum dot layer in the first openings; and a second quantum dot layer in the second openings.