Flexible Sealing Structures for Display Module Dustproofing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle LTPS display modules are vulnerable to water vapor and dust ingress due to gaps in the fixing tape, compromising their reliability.
Innovation Solution
A display module design featuring a backlight housing with a bracket and display panel, where a flexible circuit board is electrically connected through a gap sealed by a first and second sealing structure, both of which are sticky and stretchable, ensuring complete sealing and insulation from external contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixing tape is used to attach the cover, then the structure is simple and easy to manufacture, but gaps remain at the edges allowing water vapor and dust to enter
Solution Approach 1:
The patent uses a flexible sealing strip that can be stretched to fill the gap between the cover and the housing. The sealing strip is made of elastic material that allows it to deform and conform to the gap geometry, providing effective sealing without requiring complex rigid structures. This resolves the contradiction by achieving reliable sealing through a simple flexible component rather than complex assembly.
Solution Approach 2:
The patent changes the physical state of the sealing material by stretching it to increase its length and fill the gap. The sealing strip transitions from a compressed state during installation to an expanded state during operation, maintaining continuous contact with both the cover and housing surfaces. This parameter change enables effective sealing while keeping the structure simple.
2Reliability
If the sealing structure is made stretchable to fill gaps, then sealing effectiveness improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes the elastic properties of the sealing strip to compensate for variations in gap dimensions. The sealing strip can be stretched to accommodate different gap sizes within a tolerance range, reducing the need for extremely precise manufacturing. The material's elasticity allows it to adapt to dimensional variations while maintaining effective sealing.
Solution Approach 2:
The sealing strip appears to be made of a composite or specially formulated elastic material that combines flexibility, stretchability, and sealing properties. This composite material enables the sealing structure to deform and fill irregular gaps effectively, reducing sensitivity to manufacturing precision requirements while maintaining high sealing performance.
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 sealing structures effectively prevent water vapor and dust from entering the module, enhancing its dustproof and waterproof capabilities and improving overall reliability.
Implementation Method 1
a side of the first sealing structure close to the flexible circuit board and a side of the first sealing structure close to the surface of the cover plate facing the backlight housing are sticky; a side of the second sealing structure close to the flexible circuit board and a side of the second sealing structure close to the surface of the side wall of the backlight housing facing the cover plate are sticky
Data Source
AI summary
A display module is provided, which provides a first sealing structure disposed between a flexible circuit board and a surface of a cover plate facing a backlight housing and a second sealing structure disposed between the flexible circuit board and a surface of a side wall of the backlight housing facing the cover plate. It can isolate the external water vapor and dust from entering the interior of the display module, thereby improving the dustproof and waterproof capabilities of the display module, and further improving the reliability of the display module.