Display Apparatus Insulating Layer Structure for Inkjet Printing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing time for display apparatuses increases due to complex pixel arrangements, which hinders the improvement of color reproducibility and efficiency in the manufacturing process.
Innovation Solution
A display apparatus design featuring pixels with distinct color conversion layers and filter layers, utilizing quantum dots and scattering particles, along with a simplified manufacturing method that includes a hydrophobic and inclined surface treatment for the insulating layers, and the use of inkjet printing for color conversion layer formation, allowing for efficient production without increasing tack time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex pixel arrangements are used to improve color reproducibility, then color reproduction quality is improved, but manufacturing time increases
Solution Approach 1:
The insulating layer is divided into multiple sub-layers (first insulating layer and second insulating layer), each with specific functions. The first insulating layer defines opening portions with extension portions, while the second insulating layer defines openings, allowing for simplified material deposition processes that reduce manufacturing time while maintaining color reproduction quality
Solution Approach 2:
The opening portions in the first insulating layer extend in a first direction beyond the openings in the second insulating layer, creating a stepped structure. This dimensional arrangement allows inkjet nozzles to efficiently deposit color conversion materials without increasing tack time, as materials are deposited in a controlled sequence across different spatial levels
2Productivity
If simplified manufacturing methods are used to reduce production time, then productivity is improved, but color reproducibility may deteriorate
Solution Approach 1:
The first insulating layer is formed with extension portions that protrude in the first direction before the color conversion material deposition step. This preliminary structural preparation allows subsequent inkjet printing to efficiently distribute materials without requiring complex multi-step alignment processes, thereby maintaining color reproduction accuracy while reducing overall manufacturing time
Solution Approach 2:
The extension portions of the first insulating layer act as intermediaries that guide and confine the color conversion materials during inkjet deposition. These extension portions ensure precise material distribution into the openings of the second insulating layer, maintaining color reproduction quality while enabling a simplified, time-efficient manufacturing process
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 solution enhances color reproducibility and simplifies the manufacturing process, reducing production time and improving yield by enabling the use of more nozzles in inkjet printing and ensuring effective material distribution, thus maintaining production efficiency.
Implementation Method 1
first color conversion layer disposed in the first opening and which includes first quantum dots for converting incident light into first color light
Implementation Method 2
transmission layer which corresponds to a third display element of the third pixel and includes scattering particles for scattering the incident light
Implementation Method 3
a hydrophobic and inclined surface treatment for the insulating layers
Data Source
AI summary
A display apparatus includes a first pixel, a second pixel, and a third pixel which emit light of different colors from one another, a first insulating layer on a first display element of the first pixel, and a second insulating layer on the first insulating layer. The first insulating layer defines a first opening portion corresponding to the first display element, the second insulating layer defines a first opening corresponding to the first opening portion, and the first opening portion has a first extension portion which extends in a first direction and at least partially exposes the second insulating layer.