Display Bezel UV Curing Resin Barrier
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Solution Overview
Problem
Display device bezels often experience discoloration due to uncured ultraviolet curable resin monomers permeating into cavities formed in the ink layer during the drying process, leading to aesthetic issues and potential defects.
Innovation Solution
A bezel structure incorporating a second transparent polymer resin layer between the first ultraviolet curable resin layer and the ink layer to prevent monomers from permeating into cavities, combined with a patterned PET film and oxide layer for enhanced aesthetic appeal and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a first ultraviolet curable resin layer is applied to the display device bezel, then the bezel structure can be formed and cured, but uncured resin monomers permeate into cavities in the ink layer causing discoloration
Solution Approach 1:
A second transparent polymer resin layer is introduced as an intermediary barrier between the first ultraviolet curable resin layer and the ink layer. This intermediate layer prevents uncured monomers from permeating into the ink layer cavities, thereby blocking the discoloration pathway while allowing the UV curing process to proceed effectively.
Solution Approach 2:
The resin system is segmented into two distinct layers: a first ultraviolet curable resin layer for structural formation and curing, and a second transparent polymer resin layer as a protective barrier. This segmentation separates the curing function from the prevention function, allowing each layer to optimize its specific role without interfering with the other.
2Object-affected harmful factors
If a second transparent polymer resin layer is added to prevent monomer permeation, then discoloration is prevented, but the bezel structure complexity increases
Solution Approach 1:
The second transparent polymer resin layer is applied over the ink layer, merging the protective barrier function with the existing ink layer structure. This integration approach adds the necessary protection while minimizing structural complexity by combining multiple functions into a unified layered system.
3Manufacturing precision
If non-volatile solvents are used in the ink layer to minimize cavity formation, then cavity formation is reduced, but the drying process becomes more challenging
Solution Approach 1:
The second transparent polymer resin layer serves as a protective intermediary that allows the use of non-volatile solvents in the ink layer. By providing this barrier layer, the system can tolerate the challenging drying process associated with non-volatile solvents while still achieving the desired reduction in cavity formation and preventing subsequent discoloration.
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 minimizes cavity formation and prevents discoloration of the bezel, enhancing the aesthetic and functional reliability of the display device by using non-volatile solvents and a transparent polymer resin barrier.
Implementation Method 1
a first resin layer curable by ultraviolet radiation
Implementation Method 2
a second resin layer in the ink layer, the second resin layer preventing an uncured portion of the first resin layer from permeating into a cavity in the ink layer
Implementation Method 3
an oxide layer on the pattern layer, and the oxide layer may include a plurality of oxides that have respective refractive indexes
Data Source
AI summary
A bezel structure for a display device includes a first resin layer capable of being cured by ultraviolet radiation, an ink layer including a non-volatile solvent disposed on the first resin layer, a second resin layer disposed in the ink layer, and an upper structure disposed on the ink layer. The second resin layer prevents an uncured portion of the first resin layer from permeating into a cavity in the ink layer.