Hydrogen Blocking Layer in Color Conversion Panel
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Solution Overview
Problem
Hydrogen gas congregated during the deposition process in liquid crystal display manufacturing can penetrate into other elements of the display device, causing defects during subsequent high temperature processes.
Innovation Solution
A hydrogen blocking layer made of a light transmissive material, such as a transparent conductive material or high-density transparent polymer resin, is disposed on one surface of the optical filter layer to prevent hydrogen gas diffusion from the optical filter layer to the color conversion layer, thereby preventing hydrogen gas from entering the liquid crystal layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If deposition process is performed in hydrogen atmosphere, then deposition quality is improved, but hydrogen gas congregates and causes defects
Solution Approach 1:
A hydrogen blocking layer is introduced as an intermediary between the optical filter layer and the color conversion layer. This blocking layer specifically prevents hydrogen gas congregated during deposition from penetrating into the color conversion layer and liquid crystal layer, while allowing the deposition process to continue in hydrogen atmosphere for quality improvement.
Solution Approach 2:
The patent segments the display device structure by introducing a dedicated hydrogen blocking layer that separates the deposition environment from sensitive components. This segmentation allows the deposition process to occur in hydrogen atmosphere while isolating the color conversion and liquid crystal layers from hydrogen contamination.
2Object-affected harmful factors
If hydrogen blocking layer is added, then hydrogen gas penetration is prevented, but device complexity increases
Solution Approach 1:
The hydrogen blocking layer is designed to serve multiple functions: it blocks hydrogen gas penetration, maintains optical performance through appropriate material selection (transparent conductive material or transparent polymer resin), and provides structural integration with existing layers. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The patent specifies particular material parameters for the hydrogen blocking layer (transparent conductive material or transparent polymer resin) to optimize both hydrogen blocking performance and optical transparency. By controlling material parameters, the layer achieves multiple functions without requiring complex multi-layer structures.
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 hydrogen blocking layer effectively prevents hydrogen gas from diffusing into the display panel, reducing defects and ensuring the integrity of the display device during high temperature processes.
Implementation Method 1
a hydrogen blocking layer disposed on one surface of the optical filter layer... to prevent hydrogen gas diffusion from the optical filter layer to the color conversion layer
Implementation Method 2
The optical filter layer may include a plurality of layers in which inorganic layers having different refractive indexes are alternately stacked
Data Source
AI summary
An exemplary embodiment of present disclosure provides a color conversion panel including: a substrate; a plurality of light blocking layers disposed on the substrate; a color conversion layer disposed on the substrate between the plurality of the light blocking layers and including quantum dots; an optical filter layer covering the color conversion layer and the light blocking layers; and a hydrogen blocking layer disposed on one surface of the optical filter layer.