Chip Card Handling Layout to Prevent ESD at Module Contacts
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Solution Overview
Problem
Existing manufacturing processes for portable data storage devices, such as chip cards, suffer from electrostatic discharge damage due to friction, which can cause damage to sensitive semiconductor elements, and this damage is often undetected and leads to premature failure.
Innovation Solution
A handling device with modified transport elements, such as rollers and ESD brushes, is designed to avoid direct contact with sensitive areas of the data carrier module by using recesses and offset arrangements to prevent electrostatic discharge, ensuring safe handling and transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transport devices (rollers, cylinders, conveyor belts) are used to handle portable data carriers during manufacturing, then productivity and manufacturing efficiency are improved, but electrostatic discharge damage occurs to semiconductor elements due to friction and direct contact
Solution Approach 1:
A conductive bridge element is introduced as an intermediary between the transport device and the portable data carrier. This bridge element serves as a mediator that provides a controlled electrostatic discharge path, allowing safe handling through transport devices while preventing damage to semiconductor elements by dissipating electrostatic charges before they can cause harm.
Solution Approach 2:
The conductive bridge element is positioned to make contact with the portable data carrier before the transport device completes its contact. This preliminary action establishes a safe electrostatic discharge path in advance, preventing electrostatic discharge damage before it can occur during the transport process.
2Reliability
If direct contact between transport rollers and data carrier module is maintained, then handling reliability is improved, but simultaneous contact of multiple contact surfaces causes electrostatic discharge
Solution Approach 1:
The conductive bridge element acts as an intermediary that controls the contact sequence between transport devices and the data carrier module. It ensures that contact surfaces are not simultaneously contacted by establishing a controlled discharge path through the bridge element before other contacts occur.
Solution Approach 2:
The conductive bridge element makes preliminary contact with the data carrier module to establish a safe electrostatic discharge path before the transport roller completes its contact. This preliminary action prevents simultaneous contact discharge by preparing the discharge route in advance.
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
This solution effectively prevents discharge damage to semiconductor elements, enhances the service life and functionality of data storage devices, reduces failure rates, and promotes sustainability by minimizing waste.
Implementation Method 1
electrical charges build up on the data storage devices due to friction. This can lead to uncontrolled electrical discharges of the portable data storage devices, which, particularly in the case of sudden discharges, can cause damage to the semiconductor elements contained in the data storage module
Data Source
Figure 1~2
AI summary
The invention relates to a handling device (3) for handling portable data carriers (20) having a data carrier module (21), in particular chip cards, and to a manufacturing plant (1) for manufacturing, in particular personalizing, portable data carriers (2), comprising a corresponding handling device with a transport device (4) which defines a transport plane (5) along which the data carriers (20) are to be transported in a transport direction (T) and in the process are to be contacted by at least one handling element (30, 40, 50), wherein the at least one handling element (30, 40, 50) is arranged, configured and/or provided with a recess (33) relative to the transport plane (5) in such a way that simultaneous contacting of different contact surfaces (22) of the data carrier module is avoided.