Color Conversion Substrate Gas Discharge Openings
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Solution Overview
Problem
Display devices with wavelength conversion patterns face issues with gas discharge, leading to potential defects and optical interface formation, which affect display quality.
Innovation Solution
A color conversion substrate design with defined openings in the light transmission and wavelength conversion patterns allows for effective gas discharge, preventing gas accumulation and maintaining luminance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If wavelength conversion patterns are provided in each pixel to enable color conversion, then display quality is improved, but gas accumulates in the patterns causing defects and optical interface formation
Solution Approach 1:
The patent applies the porous materials principle by defining openings (void spaces) within the wavelength conversion patterns and light transmission patterns. These openings create a porous structure that allows gas to escape during the curing process, preventing gas accumulation and the formation of optical interfaces that would degrade display quality. The openings are strategically positioned to maintain the wavelength conversion functionality while enabling gas discharge pathways.
Solution Approach 2:
The patent applies segmentation by dividing the continuous wavelength conversion pattern and light transmission pattern into segmented regions with openings between them. This segmentation creates multiple gas discharge pathways throughout the structure, allowing trapped gas to escape during curing without compromising the overall color conversion performance. The patterns are divided into functional regions (wavelength conversion) and discharge regions (openings).
2Reliability
If openings are defined in the light transmission pattern and wavelength conversion pattern to discharge gas, then gas discharge reliability is improved, but the structural integrity and optical performance may be compromised
Solution Approach 1:
The patent applies local quality by strategically positioning openings only in specific regions where they will effectively discharge gas without significantly impacting optical performance. The openings are located in the light shielding region or at boundaries where they provide gas discharge pathways while minimizing interference with the optical path. Different regions of the pattern have different properties: solid regions for optical function and opening regions for gas discharge.
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 substrate improves display quality by ensuring reliable gas discharge, reducing defects, and maintaining optical performance.
Implementation Method 1
a first wavelength conversion pattern disposed on the second color filter, where the first wavelength conversion pattern converts light of a first color into light of a second color
Data Source
AI summary
A color conversion substrate includes a base on which first to third light outputting regions and a light shielding region surrounding the first to third light outputting regions are defined; first to third color filters on the base in the first to third light outputting regions, respectively; a first light shielding member on the first color filter in the light shielding region; a light transmission pattern on the first color filter; a first wavelength conversion pattern on the second color filter and which converts light of a first color into light of a second color; and a second wavelength conversion pattern on the third color filter and which converts the light of the first color into light of a third color. A first opening located in the light shielding region is defined in at least one of the light transmission pattern and the first and second wavelength conversion patterns.