Vehicle Window Assembly With Waterproof Housing for MicroLED Reliability
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Solution Overview
Problem
Existing automotive MicroLED display technologies face challenges in meeting reliability requirements for waterproofing and vibration resistance.
Innovation Solution
A vehicle window assembly design incorporating two glass cover plates, a display panel, brackets, and a waterproof case that encloses a circuit board, using a combination of housing components, adhesive strips, and fasteners to ensure waterproofing and stability against vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the circuit board is exposed outside the glass cover plates for connection purposes, then the ease of operation and manufacturing is improved, but the reliability against water ingress and vibration damage deteriorates
Solution Approach 1:
The waterproof case encloses the circuit board within a protective housing that integrates with the glass cover plate assembly. The circuit board is nested inside the waterproof case rather than being exposed, maintaining connection accessibility while providing environmental protection.
Solution Approach 2:
The waterproof case acts as an intermediary structure between the exposed circuit board and the harsh external environment (water and vibrations). It mediates the contradiction by providing a protective barrier that allows the circuit board to remain accessible for connections while shielding it from harmful factors.
2Reliability
If a waterproof case with multiple components (housing components, adhesive strips, fasteners) is used to enclose the circuit board, then the reliability against water ingress is improved, but the device complexity increases
Solution Approach 1:
The waterproof case is segmented into multiple functional components: housing components for structural enclosure, adhesive strips for sealing, and fasteners for mechanical attachment. This segmentation allows each component to perform its specific function optimally while contributing to the overall waterproofing system.
Solution Approach 2:
Multiple waterproofing mechanisms (mechanical sealing by housing components, chemical bonding by adhesive strips, and mechanical fastening by fasteners) are merged together to create a redundant waterproofing system. This combination ensures reliable water protection even if one sealing mechanism is compromised.
3Reliability
If the circuit board is fixed within the waterproof case to prevent vibration damage, then the reliability under vibration conditions is improved, but the ease of repair and replacement deteriorates
Solution Approach 1:
The circuit board is pre-fixed to the waterproof case using fasteners that allow for controlled attachment and detachment. This preliminary fixation ensures the circuit board remains stable during vehicle vibrations, while the design of the fastening system anticipates future maintenance needs by allowing reversible attachment.
Solution Approach 2:
The fastening system is designed to allow the circuit board to be easily removed and replaced during maintenance. The circuit board can be discarded (removed) from its fixed position and recovered (reinstalled) when needed, balancing vibration protection with repairability.
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 design provides a waterproof and vibration-resistant environment for the circuit board, preventing water ingress and damage from vehicle vibrations, thus ensuring the reliability of the MicroLED display.
Implementation Method 1
a first double-sided adhesive strip and a second double-sided adhesive strip, both of which are arranged along the lower edge of the two glass cover plates. The first double-sided adhesive strip adheres between the upper edge of the first housing component and the two glass cover plates.
Implementation Method 2
at least one waterproof sealing strip arranged along at least one lateral side of the first housing component
Data Source
AI summary
A vehicle window assembly includes two glass cover plates, a display panel, at least one bracket and a waterproof case. The display panel includes a display component and a circuit board. The display component is positioned between the two glass cover plates. The circuit board is connected to the display component and is at least partially exposed outside the glass cover plates. The bracket fixedly clamps a lower edge of the glass cover plates. The waterproof case is fixedly attached to the bracket and includes two housing components. The two housing components are tightly combined and enclose the circuit board.