IC card (Integrated Circuit Card) that is, integrated circuit card, IC microelectronic chip embedded in ISO in 7816 standard card base, made into card form. IC card chip production process can be divided into seven parts: system design, chip manufacturing, wafer grinding, micro-template manufacturing, card manufacturing, card initialization, processing issuance, etc..
7 major parts of IC card production!
①System design: Design the card chip (or general-purpose chip) according to the application systems functional and security requirements for the card, and design the smart card MPU, storage capacity and COS specific requirements for the logical functions and storage area distribution of the logical encryption card according to the process level and cost.
② Chip manufacturing: The circuit is manufactured on a single crystal silicon wafer. The designer submits the design layout or COS code to the chip manufacturer. The manufacturer produces a multi-layer mask version according to the design and process requirements. Hundreds to thousands of individual circuits can be made on a single wafer, each circuit is a small chip. In addition to the pressure solder block on the small chip designed according to the standard of IC in addition to the card (8 contacts), there should be a special probe pressure block for testing, but pay attention to whether these pressure blocks will give an opportunity to attackers.
③ grinding chip: the thickness should meet the requirements IC grinding, cutting the round chip into many small chips.
④Manufacture of micro-module: The manufactured chip is mounted on a printed circuit sheet with 8 contacts, called micro-module.
⑤ Card manufacturing: The micro module is embedded in the card and the printing on the card surface is completed.
⑥Card initialization: First, the transport code is checked. If it is a logical encryption card, the transport code can be written to the user code area by the manufacturer, and the user code is rewritten to the smart card after the issuer checks it correctly, at which point the password, key, and file creation operations can be written. After the operation is complete, the fuse is burned. From then on, the card enters user mode and never returns to its previous operating mode, which is also used to ensure card security.
(7) Processing issuance: The issuer personalizes the card processing through the read-write device and writes some information according to the application requirements. The card that completes the above process will become the only card that identifies the user and is given to the user.
Previous：IC card in the use of how to choose?