Window Panel Print Layer Resin Infiltration
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Solution Overview
Problem
Display devices face issues with discoloration due to uncured resin infiltrating into the print layer, especially in areas not reached by UV light during the curing process, causing damage and color defects in the window panel.
Innovation Solution
A display device with a window panel featuring a print layer composed of silicon-based or fluorine-based polymers, UV absorbers, and adhesion enhancers, applied in multiple layers to prevent resin infiltration and maintain color integrity, with specific weight percentages and pigment concentrations to ensure effective light shielding and texture representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional print layer is used in the window panel, then the window panel can be manufactured with standard materials and processes, but the print layer becomes discolored and damaged when uncured resin infiltrates into it during UV curing
Solution Approach 1:
The print layer is formulated as a composite material containing silicon-based polymer (30-90 wt%), fluorine-based polymer (30-90 wt%), pigment (5-20 wt%), and additive (0.1-5 wt%). This composite structure provides both adhesion to the window substrate and resistance to resin infiltration, while maintaining color stability after UV curing
Solution Approach 2:
The patent changes the chemical composition parameters of the print layer by using silicon-based and fluorine-based polymers with specific weight percentages. These parameter changes give the print layer unique properties: resistance to uncured resin infiltration and stability under UV light, preventing discoloration and damage
2Strength
If UV light is used to cure the resin in the window panel, then the resin achieves proper adhesion and bonding, but uncured resin remains in areas not reached by UV light and infiltrates the print layer causing discoloration
Solution Approach 1:
The silicon-based and fluorine-based polymer composition acts as an intermediary between the uncured resin and the print layer. This intermediary prevents resin infiltration into the print layer while allowing UV light to pass through and cure the resin, thus maintaining both adhesion strength and preventing discoloration in shadow areas
3Strength
If the print layer uses materials with good adhesion properties, then it bonds well to the window substrate, but it becomes vulnerable to UV light damage and resin infiltration
Solution Approach 1:
The print layer combines silicon-based polymer, fluorine-based polymer, pigment, and additive in specific proportions to create a composite material that simultaneously achieves good adhesion to the window substrate and high resistance to UV light damage and resin infiltration
Solution Approach 2:
By changing the material composition parameters to include silicon-based and fluorine-based polymers with specific weight percentages, the print layer achieves dual functionality: strong adhesion to the substrate and high reliability against environmental damage
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 effectively prevents discoloration and damage by using polymers and additives that enhance adhesion and UV resistance, maintaining the color and texture of the window panel while defining a clear boundary between display and non-display areas.
Implementation Method 1
the print layer includes an additive, the additive includes an ultraviolet ('UV') absorber or an adhesion enhancer
Implementation Method 2
the adhesion enhancer includes at least one of trialkoxy (alkyl) silane, trichloro (alkyl) silane, and perfluoro(alkyl) silane
Data Source
AI summary
Provided is a display device including a display panel configured to display an image, and a window panel located on the display panel, the window panel having a display area for transmitting an image displayed on the display panel, and a non-display area surrounding the display area, wherein the window panel includes a window substrate, and a print layer on a lower surface of the window substrate in the non-display area, and including a silicon-based polymer or a fluorine-based polymer.