RFID tag and manufacturing method thereof
AssigneeDaio Paper Corporation
InventorsTakuro Shimada, Alina Kan
Life of this patent
Estimating the term…
Abstract
An RFID tag including an inlay that is thin and easy to manufacture. The above problem is solved by an RFID tag including an inlay in which an IC chip and an antenna are provided on a base material having a main surface, wherein the antenna includes a loop conductive portion having both end portions connected to the IC chip so as to form a loop shape through the IC chip, and a dipole antenna portion disposed to surround the loop conductive portion with an interval allowing inductive coupling, and the loop conductive portion and the dipole antenna portion are formed on the main surface to have same thickness based on the main surface, and the IC chip is disposed on both end portions of the loop conductive portion.
Claims16
An RFID tag comprising:
- a base material having a main surface;
- and
- an inlay provided with an IC chip and an antenna on the base material,
- wherein:
- the antenna includes a loop conductive portion having both end portions connected to the IC chip so as to form a loop shape through the IC chip, and a dipole antenna portion disposed to surround the loop conductive portion with an interval allowing inductive coupling;
- the loop conductive portion extends through the IC chip to form an oval shape or a substantially rectangular shape having a relatively short first axis of symmetry and a relatively long second axis of symmetry orthogonal thereto;
- the IC chip is disposed at one end portion of the first axis of symmetry;
- and
- the loop conductive portion and the dipole antenna portion are formed on the main surface to have a same thickness, and the IC chip is disposed on the both end portions of the loop conductive portion, characterized in that:
- the dipole antenna portion is disposed to substantially surround the loop conductive portion at a certain interval;
- and
- the dipole antenna portion has an axis of symmetry overlapping the first axis of symmetry, terminates at a pair of tip edges facing and spaced apart from each other with a virtual line obtained by extending an IC chip side of the first axis of symmetry interposed therebetween, and continues so as to wrap around the loop conductive portion from one side to the other side of each of the tip edges.
An RFID tag comprising:
- a base material having a main surface;
- and
- an inlay provided with an IC chip and an antenna on the base material,
- wherein:
- the antenna includes a loop conductive portion having both end portions connected to the IC chip so as to form a loop shape through the IC chip, and a dipole antenna portion disposed to surround the loop conductive portion with an interval;
- the loop conductive portion extends through the IC chip to form an oval shape or a substantially rectangular shape having a relatively short first axis of symmetry and a relatively long second axis of symmetry orthogonal thereto;
- the IC chip is disposed at one end portion of the first axis of symmetry;
- a single connection conductive portion is provided to connect the other end portion of the first axis of symmetry of the loop conductive portion and the dipole antenna portion to each other;
- and
- the loop conductive portion, the connection conductive portion, and the dipole antenna portion are formed on the main surface so as to have a same thickness, and the IC chip is disposed on both end portions of the loop conductive portion;
- characterized in that:
- the dipole antenna portion is disposed to substantially surround the loop conductive portion at a certain interval;
- and
- the dipole antenna portion has an axis of symmetry overlapping the first axis of symmetry, terminates at a pair of tip edges facing and spaced apart from each other with a virtual line obtained by extending an IC chip side of the first axis of symmetry interposed therebetween, and continues so as to wrap around the loop conductive portion from one side to the other side of each of the tip edges.
Dependencies are inferred from the claim text.