Optical Communication Device Electrostatic Discharge Protection

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Solution Overview

Problem

Optical communication devices are vulnerable to electrostatic discharge, which can cause permanent damage to internal circuits and reduce their reliability due to the accumulation of electrostatic charges during manufacturing, production, and usage.

Innovation Solution

An optical communication device is designed with an electrostatic discharge path formed by an electrostatic discharge element connected to the circuit board and the cover bodies, as well as the optical transceiver, to safely conduct electrostatic charges to the ground, preventing direct discharge through internal circuits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electrostatic discharge protection is added to optical communication devices, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improveelectrostatic discharge protectionVSAvoiddevice structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces an electrostatic discharge element as an intermediary component between the cover body and the circuit board. This element provides a dedicated discharge path that mediates the electrostatic protection function, allowing the system to gain protection capability while maintaining clear functional separation and avoiding complex integration.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The electrostatic discharge protection function is segmented into a separate element rather than being integrated into the existing circuit board or cover body. This segmentation allows the protection function to be added independently, improving reliability without requiring complex modifications to the original device structure.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If electrostatic discharge path is implemented, then harm from electrostatic discharge is reduced, but manufacturing complexity increases

Engineering Contradiction:
Improveelectrostatic discharge damageVSAvoidassembly process
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The electrostatic discharge element is pre-installed on the circuit board during the manufacturing process, establishing the protection path before the device is assembled into the cover body. This preliminary action ensures that the discharge path is already in place when the device is put into service, reducing the complexity of final assembly while providing effective protection.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If electrostatic discharge element is added to the circuit board, then electrostatic protection capability is improved, but the circuit board design complexity increases

Engineering Contradiction:
Improveelectrostatic protection capabilityVSAvoidcircuit board design
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The electrostatic discharge element serves as an intermediary component that interfaces between the cover body and the circuit board. This approach allows the circuit board to maintain its primary functionality while the separate element handles the electrostatic protection, avoiding the need to redesign the circuit board's core architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The electrostatic discharge element provides multiple functions: it acts as a discharge path for electrostatic protection, maintains electrical connection between the cover body and circuit board, and can be integrated with existing grounding structures. This multi-functionality improves protection capability without proportionally increasing circuit board design complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 electrostatic discharge element enhances the protection against electrostatic damage, increasing the reliability of the optical communication device by safely routing electrostatic charges away from sensitive components.

Implementation Method 1

an electrostatic discharge element (14) disposed on the circuit board (13) and electrically connected to the circuit board (13)... the electrostatic discharge element (14) enhances the protection against electrostatic damage... safely routing electrostatic charges away from sensitive components

Methodology Applied
Scientific EffectElectrostatic Discharge: Electrostatic Discharge

Data Source

PatentUS7597487B2Optical communication device
Publication Date: 2009.10.06 DELTA ELECTRONICS INC(CN)
  • US7597487B2 patent drawing
  • US7597487B2 patent drawing
  • US7597487B2 patent drawing

AI summary

An optical communication device includes a top cover, a bottom cover, a circuit board and an electrostatic discharge element. The bottom cover is disposed opposite to the top cover, and an accommodating space is formed between the top and bottom covers. The circuit board is disposed in the accommodating space. The electrostatic discharge element is disposed on the circuit board and electrically connected to the circuit board.