Abstract: A semiconductor package including a ring structure with one or more indents and a method of forming are provided. The semiconductor package may include a substrate, a first package component bonded to the substrate, wherein the first package component may include a first semiconductor die, a ring structure attached to the substrate, wherein the ring structure may encircle the first package component in a top view, and a lid structure attached to the ring structure. The ring structure may include a first segment, extending along a first edge of the substrate, and a second segment, extending along a second edge of the substrate. The first segment and the second segment may meet at a first corner of the ring structure, and a first indent of the ring structure may be disposed at the first corner of the ring structure.

Abstract: A radio frequency identification (RFID) tag with embedded memory testing scheme and the method of testing the same is disclosed, in which the RFID tag is comprised of an analog block, a digital block and a memory block. Operationally, as the analog block receives and demodulates a memory self-test signal issued from a reader, the memory block is driven to issue a non-digital memory state signal to be received by the analog block where it is being converted into a digital memory state signal, and then the digital memory state signal is being transmitted to the digital block for enabling the same to make an evaluation to determine whether the received digital memory state signal fall within the range representing the memory is in good condition, and thereafter, the evaluation is send to the reader by the RFID tag so as to enable the reader to select a posterior process to be perform accordingly.

Abstract: The present invention relates to a method for guiding visually handicapped by the use of radio frequency identification (RFID) technology, which is able to issue an audio signal to assist and guide the movement of a visually handicapped person as an direction is being interrogated and obtained from guiding bricks embedded with RFID tags of various identification codes. The method comprises the step of: defining a plurality of identification codes, each being distinct from one another and to be stored respectively in different RFID tag; defining a plurality of directions of guidance, each being corresponding to a combination of a specific amount of the defined identification codes; forming a preceding record by recording a previous interrogation of RFID tags; interrogating RFID tags embedded in guiding bricks for forming a current data thereby; combining the current data with the preceding record so as to select a direction out of the plural previously defined directions accordingly.