Middle Bezel Hot-Melt Adhesive Lamination for Backlight Modules
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Solution Overview
Problem
The existing methods for manufacturing middle bezels for backlight modules, such as spray coating, result in low yield and inefficiency.
Innovation Solution
A method involving a bezel body, a film layer, and a hot-melt adhesive, where the hot-melt adhesive is heated, coated on the bezel body, and then covered with the film layer, followed by curing to form the middle bezel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spray coating is used to manufacture middle bezel, then the middle bezel can be formed, but the yield is low
Solution Approach 1:
The patent changes the physical state of the adhesive from liquid (spray coating) to solid hot-melt adhesive (film lamination). This parameter change eliminates the complexity of spray coating equipment and process control, while significantly improving yield through a simpler, more reliable lamination process.
Solution Approach 2:
The patent replaces the spray coating mechanical system with a hot-melt adhesive lamination system. Instead of using spray equipment to apply liquid adhesive, the patent uses heated film lamination with hot-melt adhesive, eliminating the need for complex spray coating infrastructure and improving manufacturing reliability.
2Productivity
If spray coating is used to manufacture middle bezel, then the middle bezel can be formed, but the production efficiency is low
Solution Approach 1:
The patent extracts the adhesive application step from the complex spray coating process and replaces it with a standalone hot-melt adhesive lamination step. This extraction simplifies the overall manufacturing process by removing the need for spray coating equipment, environmental controls, and complex process parameters, thereby improving production efficiency.
Solution Approach 2:
The patent changes the adhesive application method from liquid spray to solid film lamination with hot-melt adhesive. This parameter change eliminates multiple process steps including spray drying, curing, and quality control, resulting in a faster, more efficient manufacturing process with higher productivity.
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
This method simplifies the process, increases yield, and provides a more efficient way to manufacture middle bezels for backlight modules, eliminating the need for spray coating.
Implementation Method 1
heating the hot-melt adhesive, coating the heated hot-melt adhesive on a side of the bezel body
Implementation Method 2
the heated polyurethane reactive hot-melt adhesive and water molecules in air are crosslinked and cured to obtain the middle bezel
Implementation Method 3
coating the heated hot-melt adhesive on a side of the bezel body, and then covering the heated hot-melt adhesive with the film layer
Data Source
AI summary
The present disclosure provides a method of manufacturing a middle bezel, a backlight module, and a display device thereof. The method includes: providing a bezel body, a film layer, and a hot-melt adhesive; heating the hot-melt adhesive, coating a heated hot-melt adhesive on a side of the bezel body, and then covering the heated hot-melt adhesive with a film layer to obtain a film-covered bezel body; and curing the heated hot-melt adhesive in the film-covered bezel body to obtain the middle bezel.