Window Member Light-Blocking Pattern for Low-Temperature Display Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic apparatuses face issues with adhesive curing at high temperatures damaging components and deteriorating display quality due to adhesive-related surface defects and light leakage.
Innovation Solution
An electronic apparatus design incorporating a support film with a light-blocking pattern and a coating window, using a light-blocking composition including a black colorant, ultraviolet and near-infrared photoinitiators, and an adhesive resin, coupled with a light control layer and optical adhesive layer, to prevent light leakage and reduce thickness while maintaining excellent display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to couple the window member and housing, then the components can be joined together, but high temperature curing damages electronic components and deteriorates display quality
Solution Approach 1:
The patent extracts the light-blocking function from the adhesive layer by introducing a separate light-blocking pattern layer. This allows the adhesive to be formulated without strong light-blocking pigments that would cause yellowing, while still achieving effective light blocking through the dedicated pattern layer. The adhesive composition is simplified to focus on bonding performance rather than dual功能的 light blocking.
Solution Approach 2:
The patent segments the functions into distinct layers: the adhesive layer handles bonding between components, while the light-blocking pattern layer handles light blocking. This functional segmentation allows each layer to be optimized for its specific purpose without compromise, preventing the yellowing issue that occurs when adhesive must perform both functions.
2Strength
If traditional adhesive layers are used, then components can be joined, but surface defects and light leakage occur
Solution Approach 1:
The patent divides the light-blocking function from the adhesive function into separate layers. The light-blocking pattern layer is applied in specific regions where light blocking is needed, while the adhesive layer provides uniform bonding without light-blocking additives that cause yellowing and surface defects.
Solution Approach 2:
The light-blocking pattern layer is selectively applied only in regions where light blocking is required, such as around the display perimeter and in non-display areas. This local application ensures light blocking precision without affecting the optical quality of the display region, maintaining high surface quality while preventing light leakage.
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 achieves reduced thickness, improved surface quality, and enhanced processability by preventing component damage and light leakage, while maintaining excellent display quality and reliability.
Implementation Method 1
the light-blocking pattern is formed of a light-blocking composition including a black colorant, an ultraviolet photoinitiator, a near-infrared photosensitizer, a near-infrared photoinitiator, and an adhesive resin
Implementation Method 2
forming a window member by irradiating the preliminary light-blocking pattern with near-infrared rays
Implementation Method 3
the coating window may have a transmittance of about 90% or more with respect to light having a visible light wavelength range
Data Source
AI summary
An electronic apparatus includes a display panel, and a window member disposed on the display panel. The window member may include a support film, a coating window disposed on the support film, and a light-blocking pattern spaced apart from the coating window with the support film disposed therebetween. The light-blocking pattern may be formed of a light-blocking composition including a black colorant, an ultraviolet photoinitiator, a near-infrared photosensitizer, a near-infrared photoinitiator, and an adhesive resin.