Bezel Support for Flat Panel Display Flexible Circuit Protection
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Solution Overview
Problem
Flexible printed circuit boards in flat panel displays are prone to damage from external mechanical interference when bent and lack structural stability when planar, leading to potential electronic component damage and static electricity issues.
Innovation Solution
A bezel design with a first substrate part having bent edges and a second substrate part extending horizontally supports the flexible printed circuit board, providing mechanical protection and grounding through conductive connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flexible printed circuit board is bent to attach it to the back side of the bezel, then it can be mechanically connected, but electronic components may be damaged due to external mechanical interference
Solution Approach 1:
The patent introduces a second substrate part that extends perpendicularly from the first substrate part, creating a three-dimensional structure. This vertical extension provides a new spatial dimension for supporting the flexible printed circuit board, allowing it to be positioned away from the potentially harmful edge area while maintaining electrical connection functionality.
Solution Approach 2:
The second substrate part acts as an intermediary support structure between the bezel and the flexible printed circuit board. It provides a dedicated support zone that mechanically protects the board from external interference while maintaining the electrical connection pathway to the display panel.
2Object-affected harmful factors
If the flexible printed circuit board is planar and horizontal to the bezel, then it avoids mechanical interference, but it becomes structurally unstable and difficult to ground with respect to static electricity
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional structure by extending the second substrate part perpendicularly. This vertical dimension provides structural support for the flexible printed circuit board, enhancing its stability while maintaining its planar configuration for avoiding mechanical interference.
Solution Approach 2:
The second substrate part serves multiple functions simultaneously: it provides structural support for stability, creates a grounding path for static electricity dissipation, and maintains the flexible circuit board's planar orientation to avoid mechanical interference. This multi-functionality resolves the contradiction between stability and interference avoidance.
3Object-affected harmful factors
If the flexible printed circuit board is planar, then it avoids mechanical interference, but it is difficult to ground with respect to static electricity
Solution Approach 1:
The second substrate part is designed to perform multiple functions: it provides structural support, establishes electrical grounding pathways for static electricity dissipation, and maintains the flexible circuit board's planar orientation. This multi-functional design simultaneously achieves interference avoidance and reliable grounding.
Solution Approach 2:
The second substrate part serves as an intermediary structure that bridges the gap between the planar flexible circuit board and the grounding requirements. It provides a dedicated pathway for static electricity dissipation while maintaining the board's planar configuration to avoid mechanical interference.
Data Source
AI summary
A flat panel display includes a bezel having a first substrate part and a second substrate part perpendicularly extending from one side of the first substrate part. A flexible printed circuit board is attached to the second substrate part by a conductive tape, and electrostatic discharge and damage caused by external mechanical interference can be prevented.