Abstract:
An RFID chip can have an RFID circuit having first and second initial bond pads and conductive paths on the RFID chip connecting the first and second bond pads to the different sides of the chip. The conductive paths including a first side connector on a first side of the chip electrically connected to the first bond pad and a second side connector on a second side of the chip connected to the second bond pad. The first and second side connectors can cover at least half of the first and second side length respectively.
Abstract:
A two resist layer process allows a seed layer to be used to electroplate a conductive layer of an element in a way that a portion of the seed layer can be removed.
Abstract:
A metalized circuit suitable for application as a radio frequency antenna is produced by forming an antenna coil pattern on a flexible substrate (52). The antenna coil pattern is formed using a conductive ink (42) which is patterned on the substrate. The conductive ink is cured and an electrical-short layer (46) is formed across the coils of the conductive ink pattern. An insulating layer (56) is formed over top of the electrical-short layer, a metal layer (58) electroplated on top of the conductive layer, and then the electrical-short layer is removed. The use of the electrical-short layer during the electroplating allows for the voltage at the different points on the conductive ink layer to be relatively similar, so that a uniform electroplate layer is formed on top of the conductive ink layer. This results in a better quality radio frequency antenna at a reduced cost.
Abstract:
An RFID securitization piece can comprise a housing. An RFID tag in the housing can include an RFID chip and RFID antenna. The RFID securitization piece is attachable to an object such that when the RFID securitization piece is removed from the object the RFID tag is damaged. RFID interrogations will then indicate that the RFID securitization piece has been removed from the object.
Abstract:
An antenna web can include an RFID antenna on a first side of a substrate. An adhesive can be laminated on a second side of the substrate. The antenna web can then be cut into individual segments for use in constructing an RFID label.
Abstract:
A metalized circuit suitable for application as a radio frequency antenna is produced by forming an antenna coil pattern on a flexible substrate. The antenna coil pattern is formed using a conductive ink which is patterned on the substrate. The conductive ink is cured and an electrical-short layer is formed across the coils of the conductive ink pattern. An insulating layer is formed over top of the electrical-short layer, a metal layer electroplated on top of the conductive layer, and then the electrical-short layer is removed. The use of the electrical-short layer during the electroplating allows for the voltage at the different points on the conductive ink layer to be relatively similar, so that a uniform electroplate layer is formed on top of the conductive ink layer. This results in a better quality radio frequency antenna at a reduced cost.
Abstract:
A two resist layer process allows a seed layer to be used to electroplate a conductive layer of an element in a way that a portion of the seed layer can be removed.
Abstract:
The system (100) includes an RF ID card (102) and an RF ID reader (104). The ID is stored in storage (106) of the RF ID card (102). A message composition unit (108) receives the ID and composes the message including the ID, responding back to the RF ID reader (104). The RF ID reader (104) includes a timestamp production unit (107) which produces a timestamp which is provided to the message composition unit (110). The timestamp is received by the RF ID card (102). The message reception unit (109) provides the time stamp to the encryption unit (112) in the RF ID (102). The encryption unit (112) also receives a key value from storage (106). In a preferred embodiment, the encryption unit uses the key to encrypt the timestamp along with a password received form the user interface (114). The RF ID reader (104) receives the encrypted message in the message reception unit (118). Alternately, public/private encryption system is used in which the key at the RF ID card (102) is a private key while the key at the RF ID reader (104) is a public key or vice versa. In some embodiments, the ID look-up functions (120) are implemented at the external network. The decryption operation (122) receives the encrypted message and uses the key from the ID look-up to decrypt the message. Authorization unit (124) examines the password obtained by the ID look-up and the current time stamp in order to determine an authorization.
Abstract in simplified Chinese:本发明揭示一种射频识别芯片,其可以具有一射频识别电路,该射频识别电路具有第一及第二初始焊垫;以及该频射识别芯片上的导电路径,其将该等第一及第二焊垫与该芯片之不同侧连接。该等导电路径包含该芯片之一第一侧上与该第一焊垫电连接的一第一侧连接器以及该芯片之一第二侧上与该第二焊垫连接的一第二侧连接器。该等第一及第二侧连接器可以分别涵盖该第一及第二侧长度的至少一半。