Reinforcing Chassis for Display Device PCB Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flat panel display devices face rigidity issues due to external impacts, which can damage the printed circuit board and affect the display's functionality, especially since existing solutions compromise on thickness when attempting to enhance rigidity.
Innovation Solution
A reinforcing chassis made of a rigid material, such as stainless steel, is attached to the printed circuit board on the rear side, with openings to accommodate components, maintaining or reducing the overall thickness of the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the printed circuit board is made flexible to reduce weight and volume, then the display device becomes lighter and more portable, but the printed circuit board becomes susceptible to bending and damage from external impacts
Solution Approach 1:
The support structure is divided into a first support portion attached to the bottom chassis and a second support portion attached to the printed circuit board, connected by a connecting portion. This segmentation allows the flexible printed circuit board to be supported at multiple points, preventing bending while maintaining flexibility and weight reduction benefits.
Solution Approach 2:
A connecting portion acts as an intermediary element between the first support portion (attached to bottom chassis) and the second support portion (attached to printed circuit board). This intermediary structure provides mechanical support to the flexible printed circuit board, preventing it from bending under external impacts while allowing it to remain lightweight.
2Reliability
If a rigid support structure is added to protect the printed circuit board, then the rigidity and damage resistance improve, but the thickness of the display device increases
Solution Approach 1:
The support structure utilizes thin film-like connecting portions that provide structural support while maintaining minimal thickness. The connecting portion extends from the bottom chassis to the printed circuit board, providing rigidity protection without adding significant thickness to the overall display device structure.
Solution Approach 2:
Instead of adding thickness in the vertical dimension to protect the printed circuit board, the invention extends support in the horizontal dimension by creating a support structure that spans from the bottom chassis to the printed circuit board. This dimensional approach provides protection while maintaining thin profile.
3Strength
If the printed circuit board is made rigid to prevent bending, then the damage resistance improves, but the weight and volume of the display device increase
Solution Approach 1:
The support structure provides localized rigidity only where needed - at the first support portion attached to the bottom chassis and the second support portion attached to the printed circuit board - while the connecting portion remains flexible. This local quality approach prevents bending of the printed circuit board without requiring the entire structure to be rigid, thus avoiding unnecessary weight increase.
Data Source
AI summary
A display device which may include a bottom chassis receiving a display panel, at least one printed circuit board mounting parts for controlling the display panel, and a reinforcing chassis attached to the printed circuit board.