Liquid Crystal Display Xerogel Adsorption for Ionic Impurity Control
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Solution Overview
Problem
Existing liquid crystal devices require a large space for a circulation path to manage ionic impurities, leading to reduced display area and increased panel size.
Innovation Solution
Incorporation of an adsorption layer containing xerogel along the seal material or between pixel electrodes to capture and adsorb ionic impurities generated by light exposure, eliminating the need for a separate circulation path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circulation path is provided inside the seal material to manage ionic impurities, then ionic impurity management is improved, but the display area is reduced and the panel size is increased
Solution Approach 1:
The invention extracts the ionic impurity management function from the circulation path system and relocates it to the seal material itself. The seal material is modified to contain a circulation flow path with forced circulation capability, allowing ionic impurities to be managed without requiring additional space for separate circulation structures, thereby maintaining display area while improving reliability
Solution Approach 2:
The seal material is designed to serve multiple functions: it provides structural sealing between substrates and simultaneously contains the circulation flow path for ionic impurity management. This multi-functionality eliminates the need for separate circulation path structures, preventing display area reduction while achieving effective ionic impurity management
2Reliability
If a circulation path is provided inside the seal material to manage ionic impurities, then ionic impurity management is improved, but the panel size is increased
Solution Approach 1:
The circulation flow path is nested within the seal material structure itself. The seal material contains the circulation path as an integrated component, allowing the forced circulation device to manage ionic impurities without adding external circulation structures that would increase panel size. The nested configuration maintains compact panel dimensions while achieving improved reliability
3Reliability
If the seal material contains a circulation flow path with forced circulation device, then ionic impurity adsorption is improved, but the device complexity is increased
Solution Approach 1:
The circulation flow path and forced circulation device are merged into the seal material structure. The seal material contains both the circulation path and the forced circulation capability as an integrated system, reducing the number of separate components and simplifying the overall device structure while maintaining effective ionic impurity adsorption
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 adsorption layer effectively reduces ionic impurity concentration, preventing display irregularities and extending the time before liquid crystal deterioration, allowing for a larger display area without increasing the panel size.
Implementation Method 1
an adsorption layer containing xerogel disposed along at least part of the seal material
Implementation Method 2
an adsorption layer containing xerogel disposed along at least part of the seal material
Data Source
AI summary
A liquid crystal display device includes a first substrate, a second substrate, a seal material disposed between the first substrate and the second substrate at a periphery in plan view, a liquid crystal layer disposed between the first substrate and the second substrate and an inside surrounded by the seal material in plan view, and an adsorption layer containing xerogel disposed along at least part of the seal material.