LCD Module Fastening Member Prevents Protrusion
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Solution Overview
Problem
Existing liquid crystal display modules face reliability issues due to the insecure connection between the printed circuit board and the bottom chassis, which can lead to instability and potential damage from protruding fastening members.
Innovation Solution
The solution involves a design where the printed circuit board is securely fastened to the bottom chassis using support members with a head support part that prevents the fastening member from protruding, ensuring the board is fixed with a through hole and a tapered connection part for enhanced stability, and using surface mount technology for integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the printed circuit board is connected to the bottom chassis using conventional fastening members, then the assembly process is simple, but the connection reliability is poor and fastening members may protrude causing damage
Solution Approach 1:
The fastening member is divided into multiple functional parts: a fastening portion that secures the printed circuit board to the bottom chassis, and a support portion that prevents protrusion. This segmentation allows each part to perform its specific function effectively, improving connection reliability while maintaining structural clarity.
Solution Approach 2:
The support portion acts as an intermediary element between the fastening member and the printed circuit board. It prevents direct contact and potential damage by providing a buffer, while still allowing the fastening member to securely attach the board to the chassis.
2Object-affected harmful factors
If the fastening member is designed to prevent protrusion, then damage risk is reduced, but the fastening structure becomes more complex
Solution Approach 1:
The fastening function and the anti-protrusion support function are merged into a single integrated fastening member. This eliminates the need for separate components, reducing overall structural complexity while achieving both protection and secure attachment.
Solution Approach 2:
The fastening member is designed with multi-functionality: it simultaneously provides secure fastening through the fastening portion and prevents protrusion through the support portion. This universal design reduces the number of components needed and simplifies the overall structure.
3Stability of the object's composition
If multiple components are used for fastening, then connection stability is improved, but assembly time and manual labor increase
Solution Approach 1:
Multiple functional components (fastening element and support element) are merged into a single integrated fastening member, reducing the number of parts to be assembled while maintaining connection stability. This simplifies the assembly process and reduces manual labor.
Solution Approach 2:
The fastening member performs multiple functions (fastening and support) in a single component, eliminating the need for separate assembly steps for each function. This multi-functionality reduces assembly time while ensuring stable connection.
Data Source
AI summary
A liquid crystal display module includes a bottom chassis comprising a lower surface including at least one fastening hole disposed along a first direction; a printed circuit board comprising a first surface supported by the lower surface of the bottom chassis, a second surface opposite to the first surface, and at least one opening hole corresponding to the at least one fastening hole of the bottom chassis; a plurality of light emitting diodes mounted on the second surface of the printed circuit board; and at least one fastening member comprising a head part inserted into the at least one opening hole of the printed circuit board so as not to be protruded outwardly from the second surface of the printed circuit board, and a fastening part disposed in and affixed to the at least one fastening hole.