Display Barrier Composition for Edge Light Leakage Control
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Solution Overview
Problem
Existing display apparatuses face challenges in preventing light leakage from display panels, necessitating the development of a composition that forms a barrier layer with effective light-shielding properties to enhance display quality.
Innovation Solution
A composition comprising a first monomer, a second monomer, a third monomer, and a light-shielding material, with specific free volume and fractional free volume characteristics, is used to form a barrier layer that prevents external substances from passing through, thereby reducing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a barrier layer is formed to prevent light leakage, then light-shielding performance is improved, but the barrier layer may compromise chemical resistance or barrier properties
Solution Approach 1:
The barrier layer is formed as a composite material containing both a light-shielding material (such as metal oxide particles like TiO2, ZnO, or SiO2) and a polymer matrix (comprising multiple monomers including acrylates, vinyl monomers, and potentially epoxy or silicone components). This composite structure enables the simultaneous achievement of light-shielding performance through the light-shielding particles and chemical barrier properties through the crosslinked polymer network, resolving the contradiction between light leakage prevention and chemical resistance maintenance.
Solution Approach 2:
The patent specifies precise compositional parameters for the polymer matrix, including the use of multiple monomers with specific functional groups (acrylate, vinyl, epoxy, silicone) and their respective content ranges. The light-shielding material content is also controlled within specific ranges (e.g., 1-20 parts by weight per 100 parts polymer). By optimizing these parameters, the formulation achieves both adequate light-shielding capability and maintained chemical barrier properties, preventing the degradation that would occur with improper composition ratios.
2Object-affected harmful factors
If a composition is applied to form a barrier layer on display panel sides, then light leakage is reduced, but manufacturing precision and application control become more challenging
Solution Approach 1:
The composition is specifically designed to be applied only to the side surfaces (edges) of the display panel where light leakage occurs, rather than coating the entire panel. The formulation includes viscosity modifiers and thickeners that enable precise application control, allowing the barrier layer to be formed exactly where needed (at the panel edges) with controlled thickness and coverage. This localized application approach maintains manufacturing precision while effectively addressing light leakage at the critical areas.
Solution Approach 2:
The composition is formulated with specific rheological properties (viscosity, thixotropy) and curing characteristics that enable it to be applied in advance to the display panel sides before final assembly or testing. The preliminary application allows for controlled placement and curing of the barrier layer, ensuring precise positioning and uniform thickness. The composition's design enables it to maintain its shape and position during application, facilitating precise manufacturing without requiring complex real-time control systems.
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 composition forms a barrier layer with a free volume radius of 3.00 Å or less and fractional free volume of 2.50% or less, providing effective light-shielding and chemical barrier properties, enhancing the display apparatus's performance.
Implementation Method 1
a light-shielding material
Implementation Method 2
a barrier layer in contact with a side of the display panel
Data Source
AI summary
A composition including a first monomer, a second monomer, a third monomer, and a light-shielding material, and a display apparatus including a cured product of the composition are provided, wherein a free volume radius of the cured product of the composition is 3.00 Å or less and a fractional free volume of the cured product of the composition is 2.50% or less.