Non-Conductive Receiving Device Board Edge Conductive Portion Static Charge Protection
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Solution Overview
Problem
The transition from analog to digital television broadcasting poses a challenge in protecting integrated components of receiving devices from static charges when the casing, typically made of conductive metal, is replaced with non-conductive materials to reduce weight and cost, leading to potential disturbances in image and sound quality.
Innovation Solution
A receiving device with a non-conductive casing and lid, featuring a conductive portion on the digital board's edge facing the gap between the casing and lid, which directs static charges to a conductive pattern to prevent intrusion and discharge to ground, ensuring protection of internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive metal is used for the cover and chassis, then static electric charges are prevented from intruding into the electronic device, but the weight and cost increase
Solution Approach 1:
The invention applies conductive material locally only where needed for static charge protection - specifically on the board's edge portion facing the gap between casing and lid - rather than making the entire casing conductive. This localized approach provides necessary protection while minimizing weight compared to full metal casing.
Solution Approach 2:
The invention uses a composite structure combining non-conductive casing material with conductive portions on the board. This allows the majority of the casing to remain lightweight non-conductive material while incorporating conductive elements only where static charge protection is needed.
2Reliability
If conductive metal is used for the cover and chassis, then static electric charges are prevented from intruding into the electronic device, but the cost increases
Solution Approach 1:
The conductive material is applied only to the specific edge portion of the board that faces the gap between casing and lid, rather than the entire board or casing. This localized application significantly reduces the amount of expensive conductive material needed while maintaining protection effectiveness.
Solution Approach 2:
The invention combines inexpensive non-conductive casing material with conductive material applied only where necessary, creating a cost-effective composite structure that provides static charge protection without the high cost of fully conductive metal casing.
3Weight of stationary object
If non-conductive material is used for the casing, then weight and cost are reduced, but static charges can intrude and disturb image and sound quality
Solution Approach 1:
The invention addresses static charge protection locally at the critical area - the board's edge facing the gap - rather than requiring the entire casing to be conductive. This targeted approach provides protection against static charge intrusion while maintaining the overall non-conductive lightweight structure.
4Weight of stationary object
If non-conductive material is used for the casing, then weight and cost are reduced, but the protection against static charges is compromised
Solution Approach 1:
The invention provides static charge protection at the specific location where it is most needed - the board edge facing the gap - while allowing the rest of the casing to remain non-conductive. This localized conductive treatment maintains reliability for protection without requiring full conductive casing.
Solution Approach 2:
The invention creates a composite structure combining non-conductive lightweight casing material with localized conductive portions, achieving both weight reduction and static charge protection simultaneously through material composition rather than uniform material selection.
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
Effectively protects integrated components from static charges even with non-conductive casings, maintaining image and sound quality by ensuring static charges are properly managed and discharged, thus preventing disturbances.
Implementation Method 1
the board has a conductive portion located in an edge portion of the board facing a gap formed in a connecting portion between the casing and the lid
Data Source
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AI summary
A receiving device includes a board on which components for receiving a digital broadcasting signal are mounted; a non-conductive casing configured to accommodate the board; and a non-conductive lid configured to cover the board and being connected to the non-conductive casing, wherein the board has a conductive portion located in an edge portion of the board facing a gap formed in a connecting portion between the casing and the lid.