RFID Antenna Transfer to Inlay Substrate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for mounting antennas to inlay substrates in security documents like electronic passports and ID cards are inefficient, particularly in forming antennas with large pitches and requiring significant mechanical alterations to production equipment, leading to downtime and inefficient use of equipment.
Innovation Solution
A method involving forming recesses and channels in the inlay substrate using laser milling and forming channels for the antenna wire, allowing for the embedding of the antenna wire without the need for ultrasonic embedding tools, and transferring preformed antenna structures from a separate antenna substrate to the inlay substrate using techniques like pick & place machines or heat and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ultrasonic embedding tools are used to mount antenna wire to inlay substrate, then the antenna wire can be embedded into the substrate, but the process is inefficient and requires significant mechanical alterations to production equipment causing downtime
Solution Approach 1:
The patent segments the antenna mounting process by providing preformed antenna structures that are already shaped and prepared on a separate substrate before transfer. This eliminates the need for complex mechanical embedding tools during production, as the antenna structures come pre-formed and only require placement onto the inlay substrate
Solution Approach 2:
The antenna structures are preformed on a separate substrate prior to transfer to the inlay substrate. This preliminary action of shaping and preparing the antenna structures in advance eliminates the need for complex mechanical alterations to production equipment during the actual mounting process
2Ease of manufacture
If laser milling is used to form recesses and channels in the inlay substrate, then the antenna wire can be embedded without ultrasonic tools, but the process requires additional steps
Solution Approach 1:
Resses and channels are formed in advance in the inlay substrate using laser milling to prepare receptacles for the antenna structures. This preliminary preparation allows for simplified subsequent placement of preformed antenna structures without requiring complex ultrasonic embedding tools during production
Solution Approach 2:
The recesses and channels act as intermediary structures that facilitate the transfer and embedding of antenna structures. These pre-formed receptacles guide and secure the antenna structures during placement, eliminating the need for ultrasonic embedding tools while maintaining manufacturing simplicity
3Manufacturing precision
If preformed antenna structures are transferred from a separate substrate, then the antenna quality and alignment are improved, but the transfer process requires additional equipment like pick & place machines
Solution Approach 1:
Antenna structures are preformed on a separate substrate with precise geometry and positioning features before transfer. This preliminary formation ensures high manufacturing precision and proper alignment with chip modules is achieved before the transfer process, reducing the complexity requirements of the transfer equipment
Solution Approach 2:
The antenna structures are created as precise copies or replicas on the separate substrate with exact geometric dimensions and positioning. This copying approach ensures that when transferred, the antenna structures maintain high alignment precision with chip modules without requiring complex transfer equipment
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 approach enhances the efficiency of antenna mounting by eliminating the need for ultrasonic embedding and reducing mechanical alterations, improving antenna quality and throughput while maintaining the antenna's integrity and alignment with the chip module.
Implementation Method 1
forming recesses and channels in the inlay substrate using laser milling
Implementation Method 2
transferred en masse to a corresponding array of transponder sites on the inlay substrate
Data Source
AI summary
Forming antenna structures having several conductor turns (wire, foil, conductive material) on a an antenna substrate (carrier layer or film or web), removing the antenna structures individually from the antenna substrate using pick & place gantry or by means of die punching, laser cutting or laminating, and transferring the antenna structure with it's end portions (termination ends) in a fixed position for mounting onto or into selected transponder sites on an inlay substrate, and connecting the aligned termination ends of the antenna structure to an RFID (radio frequency identification) chip or chip module disposed on or in the inlay substrate. A contact transfer process is capable of transferring several antenna structures simultaneously to several transponder sites.