Frame Glue Composition for Narrow-Bezel Display Panel Curing
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Solution Overview
Problem
Current frame glue materials in liquid crystal display panels suffer from reduced curing due to smaller light transmitting areas, leading to ingredient precipitation and contamination of liquid crystals, which decreases product yields.
Innovation Solution
A frame glue material comprising epoxy acrylate resin, photoinitiator, thermal curing agent, cross-linking agent, fillers, and additives, with specific molar percentages, is used to enhance photo-curing and thermal-curing processes, ensuring complete cross-linking and preventing ingredient precipitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the bezel width is reduced to meet narrow frame requirements, then the display panel achieves a more modern and compact appearance, but the light transmitting area becomes smaller, reducing the actual illumination on the frame glue during photo-curing and lowering the degree of curing
Solution Approach 1:
The patent changes the chemical composition parameters of the frame glue material by introducing a dual-curing system with specific photoinitiators (type I and type II) and thermal curing agents. This allows the material to achieve complete curing through thermal activation after photo-curing, compensating for the reduced light intensity in narrow bezel designs
Solution Approach 2:
The patent creates a composite curing system combining photo-curing and thermal curing mechanisms. The frame glue material contains multiple curing agents and initiators that work in sequence: photo-curing provides initial setting while thermal curing ensures complete crosslinking, achieving reliable curing performance despite reduced illumination in narrow bezel configurations
2Shape
If the light transmitting area becomes smaller due to reduced bezel width, then the display panel achieves a narrower frame, but the degree of curing of the frame glue is reduced, causing ingredients to precipitate and contaminate liquid crystals
Solution Approach 1:
The patent applies photo-curing first to achieve preliminary setting and initial crosslinking of the frame glue, then follows with thermal curing to complete the crosslinking process. This preliminary photo-curing action provides immediate structural stability while the subsequent thermal curing ensures complete reaction and prevents ingredient precipitation
Solution Approach 2:
The patent changes the curing mechanism from relying solely on photo-curing to a dual photo-thermal curing system. By introducing thermal curing agents and controlling temperature parameters after photo-curing, the system ensures complete crosslinking regardless of light intensity variations caused by narrow bezel design
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 improved curing process prevents frame glue contamination of liquid crystals, significantly enhancing product yields by ensuring complete cross-linking in the photo-curing stage.
Implementation Method 1
A curing process of the frame glue includes photo curing and thermal curing
Implementation Method 2
A curing process of the frame glue includes photo curing and thermal curing
Data Source
AI summary
A frame glue material, a display panel, and a manufacturing method thereof are disclosed. The frame glue material includes a photoinitiator, a thermal curing agent, and an epoxy acrylate resin, and a chemical structural formula of the epoxy acrylate resin is:wherein, R includes at least one of resorcinol, hydroquinone, or bisphenol A.