Communication devices, remote intelligent communication devices, electronic communication devices, methods of forming remote intelligent communication devices and methods of forming a radio frequency identification device

• US 7,106,201 B2
• Filed: 11/20/2001
• Issued: 09/12/2006
• Est. Priority Date: 08/20/1997
• Status: Expired due to Fees

• Current Assignee: Round Rock Research LLC
• Original Assignee: Micron Technology, Inc.
• Inventors: Tuttle, Mark E.
• Primary Examiner(s): Lee, Benjamin C.
• Application Number:
  US09/988,485
• Publication Number:
  US 20020075184A1
• Time in Patent Office: 1,757 Days
• Field of Search: 340/572.1, 340/572.2, 340/572.7, 340/572.8
• US Class Current: 340/572.7
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
• CPC Class Codes: G06K 19/07786 the antenna being of the HF type, such as a dipole
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

The present invention provides electronic communication devices, methods of forming electrical communication devices, and communications methods. An electronic communication device adapted to receive electronic signals includes: a housing comprising a substrate and an encapsulant; an integrated circuit provided within the housing and comprising transponder circuitry operable to communicate an identification signal responsive to receiving a polling signal; an antenna provided within the housing and being coupled with the transponder circuitry; and a ground plane provided within the housing and being spaced from the antenna and configured to shield some of the electronic signals from the antenna and reflect others of the electronic signals towards the antenna. A method of forming an electronic signal communication device includes providing a substrate having a support surface; providing a conductive layer adjacent at least a portion of the support surface; providing a dielectric layer over the conductive layer; providing an antenna over the dielectric layer; coupling an integrated circuit with the antenna; and encapsulating the antenna, the dielectric layer, and the integrated circuit using a flowable encapsulant.

Claims

1. A remote intelligent communication device comprising:

a ground plane;

an antenna spaced apart from and interacting with the ground plane, the antenna being substantially electrically insulated from the ground plane;

transponder circuitry coupled with the antenna;

an encapsulant configured to form a housing about the antenna and the transponder circuitry, the encapsulant comprising an outermost planar surface of the housing; and

a power source electrically connected with the transponder circuitry and the ground plane.

2. The device according to claim 1 wherein the encapsulant encapsulates and contacts the antenna.

3. The device according to claim 1 wherein the encapsulant encapsulates and contacts the transponder circuitry.

4. The device according to claim 1 wherein the transponder circuitry comprises radio frequency identification device communication circuitry.

5. The device according to claim 1 wherein the transponder circuitry includes a modulator configured to communicate using backscatter communications.

6. The device according to claim 1 further comprising an integrated circuit comprising the transponder circuitry.

7. A communication device comprising:

transponder circuitry operable to communicate an identification signal using backscatter communications responsive to receiving a polling signal;

an antenna coupled with the transponder circuitry; and

a ground plane spaced from the antenna and configured to shield some electromagnetic signals from the antenna and reflect other electromagnetic signals towards the antenna, the ground plane being electrically coupled with a terminal of a power source and provided at a voltage of the terminal.

8. The device according to claim 7 wherein the ground plane has a first side facing away from the antenna and configured to shield the some electromagnetic signals from the antenna, and a second side facing the antenna and configured to reflect the other electromagnetic signals towards the antenna.

9. The device according to claim 8 wherein the transponder circuitry is configured to implement radio frequency identification device communications.

10. The device according to claim 7 further comprising the power source coupled with the transponder circuitry.

11. The device according to claim 7 further comprising an integrated circuit comprising the transponder circuitry.

12. A method of forming a remote intelligent communication device comprising:

providing a power source;

forming a ground plane;

forming an antenna spaced from the ground plane;

conductively bonding transponder circuitry with the antenna; and

electrically coupling the ground plane with the power source to electrically ground the ground plane.

13. The method of claim 12 further comprising conductively bonding the transponder circuitry with the ground plane.

14. The method of claim 12 further comprising forming a housing to encapsulate and contact the antenna and the transponder circuitry.

15. The method of claim 12 wherein the conductively bonding comprises conductively bonding the transponder circuitry configured to implement backscatter communications.

16. The method of claim 12 wherein the antenna comprises a trace of electrically conductive ink.

17. The method of claim 12 further comprising providing an integrated circuit comprising the transponder circuitry.

18. A method of forming a remote intelligent communication device comprising:

forming a ground plane;

printing an antenna over the ground plane in a substantially electrically insulated relationship with respect to the ground plane;

forming a housing to encapsulate and contact the antenna;

electrically coupling transponder circuitry with the antenna;

providing a dielectric layer intermediate the ground plane and the antenna; and

printing at least one conductive connection through the dielectric layer while printing the antenna.

19. The method of claim 18 wherein the forming the housing comprises forming the housing to contact a portion of the dielectric layer.

20. The method of claim 18 wherein the electrically coupling comprises electrically coupling the transponder circuitry configured to implement backscatter communications.

21. The method of claim 18 wherein the printing the antenna comprises printing a trace of electrically conductive ink.

22. The method of claim 18 further comprising providing an integrated circuit comprising the transponder circuitry.

23. A method of forming a radio frequency identification device comprising:

providing a conductive layer;

forming an antenna over the conductive layer;

providing transponder circuitry over the conductive layer, wherein the transponder circuitry is configured to communicate using radio frequency identification device communications to identify the radio frequency identification device;

electrically coupling the transponder circuitry with the antenna;

providing an encapsulant to form the device comprising a substantially void-free mass; and

grounding the conductive layer during communications of the transponder circuitry.

24. The method of claim 23 wherein the encapsulating comprises:

flowing a flowable encapsulant over the antenna and the transponder circuitry; and

curing the encapsulant.

25. The method of claim 24 wherein the flowing the flowable encapsulant comprises flowing the flowable encapsulant over an entirety of the antenna.

26. The method of claim 23 further comprising providing an integrated circuit comprising the transponder circuitry.

27. The method of claim 23 wherein the providing the encapsulant comprises providing the encapsulant to form the device comprising a solid device which is a void-free mass.